{ "name": "Free calculators for sellers, contractors, and small back offices", "url": "https://marisstella.app/", "license": "MIT", "price": { "amount": "0", "currency": "USD" }, "privacy": "client-side-only", "generated_by": "platform/pages/build.mjs", "feed": "https://marisstella.app/feed.xml", "categories": [ { "id": "self-hosted", "name": "Self-hosted business apps", "url": "https://marisstella.app/c/self-hosted/", "description": "Open-source business software you run on your own server: failed-payment recovery, cancellation flows, MRR and revenue recognition, lifecycle email, referrals, feature flags, status pages, help centres, booking pages, cookie-free analytics and more. Deploy your own copy with your own keys; you own the data.", "tool_count": 34 }, { "id": "marketplace", "name": "Marketplace seller tools", "url": "https://marisstella.app/c/marketplace/", "description": "Free fee and profit calculators for eBay, Etsy, Amazon, KDP, Shopify, Walmart, TikTok Shop, Faire and Reverb. Enter your cost of goods, see what an order nets.", "tool_count": 117 }, { "id": "trades", "name": "Trade & contractor bids", "url": "https://marisstella.app/c/trades/", "description": "Free bid calculators for roofing, HVAC, plumbing, electrical, concrete, painting and cleaning. Price materials, crew hours and overhead, then print a proposal.", "tool_count": 189 }, { "id": "food-service", "name": "Restaurant, bar & food truck pricing", "url": "https://marisstella.app/c/food-service/", "description": "Free pricing tools for restaurants, bars and food trucks. Work out a menu item's margin, a spirit's pour cost, or whether a booked event covers its own prep.", "tool_count": 69 }, { "id": "services", "name": "Service business pricing & quotes", "url": "https://marisstella.app/c/services/", "description": "Free quoting tools for salons, photographers, mobile notaries, pool routes, event rentals and translators. Turn travel, time and materials into a price.", "tool_count": 197 }, { "id": "logistics", "name": "Logistics, freight & cloud cost", "url": "https://marisstella.app/c/logistics/", "description": "Free tools to normalise a 3PL quote, audit a freight accessorial bill, class an LTL shipment, price owner-operator miles and size a cloud egress transfer.", "tool_count": 36 }, { "id": "evidence", "name": "Compliance checks & evidence records", "url": "https://marisstella.app/c/evidence/", "description": "Free tools that produce a dated record of what you checked: e-invoicing readiness, backup verification, permission drift, accessibility, chargeback packets.", "tool_count": 118 }, { "id": "uk-tax", "name": "UK tax, pay & benefits", "url": "https://marisstella.app/c/uk-tax/", "description": "Free UK calculators: take-home pay, Self Assessment, dividend tax, IR35, VAT schemes, pension relief, statutory pay and the £100k personal-allowance trap.", "tool_count": 56 }, { "id": "backoffice", "name": "Back-office money & contracts", "url": "https://marisstella.app/c/backoffice/", "description": "Free calculators for cash runway, invoice payment terms, CAM reconciliation, SaaS seat true-ups and break-even on a price move — the arithmetic after the win.", "tool_count": 216 }, { "id": "ci", "name": "CI checks & developer gates", "url": "https://marisstella.app/c/ci/", "description": "Free local tools that read a GitHub Actions job JSON, two coverage XML reports, JUnit XML across runs, or a robots.txt — and report a deterministic verdict. No account, nothing uploaded.", "tool_count": 177 }, { "id": "solo-earner", "name": "Creator & solo earner income", "url": "https://marisstella.app/c/solo-earner/", "description": "What one person actually earns from their own work — a print, an ad slot, a delivery shift, a repo, a job application. Priced or checked before you commit to a number.", "tool_count": 95 }, { "id": "research-algorithms", "name": "Research algorithms & ML", "url": "https://marisstella.app/c/research-algorithms/", "description": "Methods from published research papers, run on your own data in your browser and cited: changepoint detection, conformal prediction intervals, matrix-profile motifs and anomalies. Also callable from the command line and by AI agents.", "tool_count": 3 }, { "id": "learning", "name": "Learning & practice", "url": "https://marisstella.app/c/learning/", "description": "Learn a language or a technical skill by doing it: hands-free speaking drills, graded audio stories, and project-first engineering lessons, free in your browser. Plus free stories to read or listen to.", "tool_count": 5 }, { "id": "open-hardware", "name": "Open hardware, robots & house plans", "url": "https://marisstella.app/c/open-hardware/", "description": "Things you can build, change and sell: MIT-licensed robot CAD with laser-cut and 3D-print files, firmware, bills of materials and a browser simulator for each (a robot vacuum and mop, a robotic lawn mower, tennis ball robots), and a generator of public-domain house plans with drawings, IFC and DXF.", "tool_count": 4 }, { "id": "more", "name": "More free tools", "url": "https://marisstella.app/c/more/", "description": "The rest of the free, browser-only calculators here — everything outside the marketplace, trade, services, logistics, compliance, back-office and CI sections.", "tool_count": 5 } ], "tools": [ { "slug": "1099-k-threshold-checker", "name": "1099-K Threshold Checker", "url": "https://marisstella.app/1099-k-threshold-checker/", "category": "Compliance checks & evidence records", "description": "Check whether a marketplace, payment app, or platform is likely to send you a Form 1099-K, per platform and per tax year. Covers the federal threshold's four changes since 2022…", "pages": 3, "launched": "2026-09-17" }, { "slug": "1099-vendor-csv-checker", "name": "1099-NEC Vendor CSV Checker — free, private, in your browser", "url": "https://marisstella.app/1099-vendor-csv-checker/", "category": "Back-office money & contracts", "description": "Free 1099-NEC pre-flight check: paste your vendor payments CSV and see who crosses the $600 or $2,000 threshold, missing or invalid TINs, blank addresses, bad state codes…", "pages": 1, "launched": "2026-10-04" }, { "slug": "1099-vendor-tracker", "name": "1099-NEC Vendor Tracker", "url": "https://marisstella.app/1099-vendor-tracker/", "category": "Compliance checks & evidence records", "description": "Track which contractors need a 1099-NEC under the 2026 $2,000 reporting threshold (up from $600), check the corporation exemption, and see missing W-9s before the January 31…", "pages": 4, "launched": "2026-09-17" }, { "slug": "1099k-reconciliation-worksheet", "name": "1099-K Reconciliation Worksheet — free, no sign-up", "url": "https://marisstella.app/1099k-reconciliation-worksheet/", "category": "Marketplace seller tools", "description": "Free browser worksheet that reconciles one or more Form 1099-K Box 1a totals (Etsy, eBay, Poshmark, Mercari, Depop, Whatnot, StockX) down to an estimated net profit by backing out…", "pages": 3, "launched": "2026-09-11" }, { "slug": "3d-print-price-calculator", "name": "3D Print Price Calculator", "url": "https://marisstella.app/3d-print-price-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for makers selling 3D-printed parts: price one print from filament, electricity, printer depreciation, failed-print rate, and post-processing labor, then check…", "pages": 4, "launched": "2026-09-07" }, { "slug": "3pl-invoice-audit-checker", "name": "3PL Invoice Audit Checker", "url": "https://marisstella.app/3pl-invoice-audit-checker/", "category": "Logistics, freight & cloud cost", "description": "Check a 3PL invoice against your contract rate card and your own records. Flags rates above contract, duplicate lines, charges not in the rate card, minimum double billing and…", "pages": 2, "launched": "2026-10-12" }, { "slug": "3pl-quote-normalizer", "name": "3PL Quote Normalizer", "url": "https://marisstella.app/3pl-quote-normalizer/", "category": "Logistics, freight & cloud cost", "description": "Compare a third-party logistics quote with in-house fulfillment costs, minimum monthly spend, and true cost per order.", "pages": 15, "launched": "2026-08-25" }, { "slug": "401k-loan-vs-withdrawal-calculator", "name": "401(k) loan vs withdrawal calculator", "url": "https://marisstella.app/401k-loan-vs-withdrawal-calculator/", "category": "Service business pricing & quotes", "description": "Free 401(k) loan vs withdrawal calculator: the true cost of each, with tax, penalty, lost growth and the job-loss risk, next to an outside loan. Nothing uploaded.", "pages": 1, "launched": "2026-10-08" }, { "slug": "401k-plan-fee-calculator", "name": "401(k) Plan Fee Calculator — free, private", "url": "https://marisstella.app/401k-plan-fee-calculator/", "category": "Creator & solo earner income", "description": "Free 401(k) plan fee calculator for small-business owners and plan committees: all-in cost as a percent of assets and per participant, recordkeeper, advisor and fund fees, an…", "pages": 1, "launched": "2026-10-10" }, { "slug": "529-to-roth-rollover-calculator", "name": "529 to Roth IRA rollover calculator", "url": "https://marisstella.app/529-to-roth-rollover-calculator/", "category": "Service business pricing & quotes", "description": "Free 529-to-Roth IRA rollover calculator: the 15-year rule, five-year contribution lock, $35,000 lifetime cap, annual limit and earned income, year by year. Nothing uploaded.", "pages": 1, "launched": "2026-10-08" }, { "slug": "ab-test-significance-calculator", "name": "A/B Test Significance Calculator — free, private, in your browser", "url": "https://marisstella.app/ab-test-significance-calculator/", "category": "Back-office money & contracts", "description": "Free A/B test significance calculator. Enter visitors and conversions to get the p-value, confidence interval, sample ratio mismatch check, Bayesian chance to beat control and an…", "pages": 1, "launched": "2026-09-30" }, { "slug": "aba-authorization-tracker", "name": "ABA authorization tracker: units, expirations and reauth dates — free, private", "url": "https://marisstella.app/aba-authorization-tracker/", "category": "Service business pricing & quotes", "description": "Free ABA authorization tracker: paste your authorizations and see which units run out early, which expire unused, and when each reauthorization is due. Private, runs in your…", "pages": 1, "launched": "2026-10-06" }, { "slug": "aca-subsidy-cliff-calculator", "name": "ACA Subsidy Cliff Calculator — free, 2026", "url": "https://marisstella.app/aca-subsidy-cliff-calculator/", "category": "Back-office money & contracts", "description": "Free 2026 ACA subsidy cliff calculator: enter household size, MAGI and your benchmark premium to see your premium tax credit, how far you are from the 400% of poverty cliff, and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "actions-artifact-poisoning-check", "name": "Can a fork PR's artifact get executed by your privileged workflow?", "url": "https://marisstella.app/actions-artifact-poisoning-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find a workflow_run job that downloads an artifact and later executes something from it, plus a download-artifact step with no name…", "pages": 4, "launched": "2026-09-09" }, { "slug": "actions-cache-poisoning-check", "name": "Can a fork PR poison your GitHub Actions cache?", "url": "https://marisstella.app/actions-cache-poisoning-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find actions/cache steps reachable from pull_request_target/workflow_run, and restore-keys fallbacks that can adopt a poisoned prefix…", "pages": 4, "launched": "2026-09-07" }, { "slug": "actions-checkout-credentials-check", "name": "Which of your Actions jobs leave the GITHUB_TOKEN in .git/config?", "url": "https://marisstella.app/actions-checkout-credentials-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every actions/checkout step without persist-credentials: false, with jobs that also upload artifacts (the artipacked pattern)…", "pages": 1, "launched": "2026-10-15" }, { "slug": "actions-injection-check", "name": "Is your GitHub Actions workflow open to a pwn request or script injection?", "url": "https://marisstella.app/actions-injection-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find pull_request_target/workflow_run 'pwn request' checkouts and shell script-injection from untrusted ${{ github.event }}…", "pages": 4, "launched": "2026-09-07" }, { "slug": "actions-minutes-estimator", "name": "What will this GitHub Actions workflow cost you a month?", "url": "https://marisstella.app/actions-minutes-estimator/", "category": "CI checks & developer gates", "description": "Paste a GitHub Actions workflow and see projected monthly billable minutes and cost, with the macOS 10x multiplier and cron costs flagged. Runs in your browser.", "pages": 4, "launched": "2026-09-11" }, { "slug": "actions-permissions-check", "name": "Does your GITHUB_TOKEN use least-privilege permissions?", "url": "https://marisstella.app/actions-permissions-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every workflow or job with no explicit permissions block (running on the ambient default) or permissions: write-all. Free, runs in…", "pages": 4, "launched": "2026-09-07" }, { "slug": "actions-runner-starvation-check", "name": "Is your red GitHub Actions check even real?", "url": "https://marisstella.app/actions-runner-starvation-check/", "category": "CI checks & developer gates", "description": "Paste the JSON from a GitHub Actions run and find out in one click whether a red check is a real failure or GitHub silently never assigned it a runner. Free, runs in your browser…", "pages": 4, "launched": "2026-09-07" }, { "slug": "actions-runtime-deprecation-check", "name": "Which of your GitHub Actions steps run on a deprecated Node runtime?", "url": "https://marisstella.app/actions-runtime-deprecation-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and list every actions/* step pinned to a major that runs on a deprecated Node runtime (Node 12 or 16) or that GitHub has shut down. Free…", "pages": 1, "launched": "2026-10-16" }, { "slug": "actions-schedule-check", "name": "Will your GitHub Actions schedule cron actually run when you think it will?", "url": "https://marisstella.app/actions-schedule-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every schedule cron that is invalid, faster than GitHub's 5-minute minimum, or pinned to the top of the hour where scheduled runs…", "pages": 2, "launched": "2026-10-17" }, { "slug": "actions-secret-leak-check", "name": "Does your GitHub Actions workflow leak a secret GitHub's own masking can't catch?", "url": "https://marisstella.app/actions-secret-leak-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find the two documented ways a secret slips past GitHub's own log masking: transforming it (base64/hex/substring) before printing, and…", "pages": 3, "launched": "2026-09-17" }, { "slug": "actions-secrets-inherit-check", "name": "Does secrets: inherit hand your secrets to the wrong workflow?", "url": "https://marisstella.app/actions-secrets-inherit-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every secrets: inherit call that hands your whole secret set to an external reusable workflow, or to a job a fork can trigger…", "pages": 4, "launched": "2026-09-23" }, { "slug": "actions-self-hosted-exposure-check", "name": "Is your self-hosted GitHub Actions runner exposed to a fork?", "url": "https://marisstella.app/actions-self-hosted-exposure-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every job that runs on a self-hosted label in a workflow triggered by pull_request, pull_request_target, workflow_run, or…", "pages": 4, "launched": "2026-09-07" }, { "slug": "actions-timeout-check", "name": "Which of your GitHub Actions jobs can hang for 6 hours?", "url": "https://marisstella.app/actions-timeout-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every job with no timeout-minutes (or one set to the 360-minute default) — the jobs that can hang for six hours of billed runner…", "pages": 2, "launched": "2026-10-03" }, { "slug": "actions-transitive-pin-check", "name": "Does your pinned workflow load something unpinned underneath it?", "url": "https://marisstella.app/actions-transitive-pin-check/", "category": "CI checks & developer gates", "description": "Paste a GitHub Actions workflow and check whether a reusable workflow or composite action it pins to a commit SHA itself loads a third-party action by a mutable tag underneath — a…", "pages": 3, "launched": "2026-09-17" }, { "slug": "activecampaign-import-csv-check", "name": "ActiveCampaign Import CSV Check — free, private, in your browser", "url": "https://marisstella.app/activecampaign-import-csv-check/", "category": "Compliance checks & evidence records", "description": "Catch what breaks an ActiveCampaign contacts, accounts or deals import, with the line number, before you upload. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "ad-incrementality-test-analyzer", "name": "Ad Incrementality Test Analyzer — free, private, in your browser", "url": "https://marisstella.app/ad-incrementality-test-analyzer/", "category": "Back-office money & contracts", "description": "Free ad incrementality calculator for geo and store holdout tests. Paste sales by region, name the test regions and the start date to get the incremental lift with an interval…", "pages": 1, "launched": "2026-09-30" }, { "slug": "ad-slot-sell-through-planner", "name": "Should you raise your sponsorship price? Free sell-through planner", "url": "https://marisstella.app/ad-slot-sell-through-planner/", "category": "Creator & solo earner income", "description": "Free ad slot sell-through planner for newsletter and podcast publishers. Paste past runs to see sell-through, unsold revenue, whether to raise or lower your price, booking pace…", "pages": 1, "launched": "2026-10-07" }, { "slug": "ad-spend-saturation-optimizer", "name": "Ad Spend Saturation Optimizer — free, private, in your browser", "url": "https://marisstella.app/ad-spend-saturation-optimizer/", "category": "Back-office money & contracts", "description": "Free ad budget optimizer for multi-channel advertisers. Upload weekly spend and revenue per channel to see each channel's diminishing-returns curve, the marginal return on the…", "pages": 2, "launched": "2026-09-30" }, { "slug": "ada-title-ii-evidence", "name": "ADA Title II Website Accessibility Evidence Report", "url": "https://marisstella.app/ada-title-ii-evidence/", "category": "Compliance checks & evidence records", "description": "Turn a government website's axe-core JSON scan into a dated WCAG 2.1 AA evidence record for ADA Title II, split into required findings and best-practice extras. Runs locally in…", "pages": 3, "launched": "2026-09-07" }, { "slug": "adjunct-course-offer-calculator", "name": "Adjunct course offer calculator", "url": "https://marisstella.app/adjunct-course-offer-calculator/", "category": "Service business pricing & quotes", "description": "Free adjunct pay calculator: enter the per-course pay, prep, grading, unpaid office hours, commute and cancellation risk to see what a course really pays per hour, compare up to…", "pages": 1, "launched": "2026-10-09" }, { "slug": "adu-payback-calculator", "name": "ADU Payback Calculator — free, private, in your browser", "url": "https://marisstella.app/adu-payback-calculator/", "category": "Back-office money & contracts", "description": "ADU payback calculator for homeowners and builders. Enter build cost, loan, rent and operating costs and see cash flow, yield on cost, payback, IRR, NPV and break-even rent. Runs…", "pages": 1, "launched": "2026-10-01" }, { "slug": "affiliate-disclosure-checker", "name": "Is your affiliate disclosure missing, or just too late?", "url": "https://marisstella.app/affiliate-disclosure-checker/", "category": "Creator & solo earner income", "description": "Paste a blog post's HTML and check whether an FTC or Amazon Associates affiliate disclosure appears before the first affiliate link. Free, runs in your browser.", "pages": 4, "launched": "2026-09-09" }, { "slug": "ag-spray-drone-quote-calculator", "name": "Ag Spray Drone Quote Calculator — free, private, in your browser", "url": "https://marisstella.app/ag-spray-drone-quote-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free spray drone quote calculator for custom applicators. Enter your drone, batteries, costs and a list of fields; get the real time on each field, cost per acre, a recommended…", "pages": 2, "launched": "2026-10-07" }, { "slug": "agent-brokerage-split-calculator", "name": "Real Estate Brokerage Split Calculator — free, private, in your browser", "url": "https://marisstella.app/agent-brokerage-split-calculator/", "category": "Back-office money & contracts", "description": "Free real estate brokerage split calculator for agents. Compare up to three brokerages by what you net after the split, cap, transaction and monthly fees, franchise royalty and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "agent-instructions-drift-check", "name": "Does your AI coding agent's instruction file still match your repo?", "url": "https://marisstella.app/agent-instructions-drift-check/", "category": "CI checks & developer gates", "description": "Paste AGENTS.md or CLAUDE.md and find referenced file paths that no longer exist, undefined npm scripts and shell footguns. Free, runs in your browser.", "pages": 3, "launched": "2026-09-16" }, { "slug": "agent-permission-config-check", "name": "Is your AI coding agent's permission config over-broad?", "url": "https://marisstella.app/agent-permission-config-check/", "category": "CI checks & developer gates", "description": "Lint Claude Code settings.json or MCP configs for blanket Bash allow rules, plain-http MCP URLs and hardcoded secrets. Free, runs in your browser.", "pages": 3, "launched": "2026-09-23" }, { "slug": "agent-workroom", "name": "Agent Workroom: a 3D room for your AI agents' tasks", "url": "https://marisstella.app/agent-workroom/", "category": "CI checks & developer gates", "description": "Walk around a 3D room where each AI coding agent has a desk and every task sits on the wall. Add and move tasks by voice or text, and pull progress from a GitHub repo's pull…", "pages": 1, "launched": "2026-10-24" }, { "slug": "agentic-trading-lab", "name": "Agentic Trading Lab", "url": "https://marisstella.app/agentic-trading-lab/", "category": "More free tools", "description": "Free, open-source research agent for trading your own account: backtests published momentum and trend rules on 100 years of US industry data and on BTC/ETH, charges for every…", "pages": 1, "launched": "2026-10-28" }, { "slug": "ai-bookkeeper", "name": "AI Bookkeeper: double-entry books that learn from your corrections", "url": "https://marisstella.app/ai-bookkeeper/", "category": "Compliance checks & evidence records", "description": "Free AI bookkeeping in your browser. Import bank and card CSVs, get an account suggested for every line with a reason, file the review queue once and it learns your payees…", "pages": 48, "launched": "2026-10-21" }, { "slug": "ai-coding-plan-cost-calculator", "name": "Is your AI coding plan actually cheaper than the API?", "url": "https://marisstella.app/ai-coding-plan-cost-calculator/", "category": "CI checks & developer gates", "description": "Is your Claude Max, Cursor, GitHub Copilot, or ChatGPT Plus plan actually cheaper than paying per token through the API? Enter your own usage and rates and see the monthly cost…", "pages": 4, "launched": "2026-09-11" }, { "slug": "ai-crawler-access-check", "name": "Which AI crawlers can actually read your site?", "url": "https://marisstella.app/ai-crawler-access-check/", "category": "CI checks & developer gates", "description": "Paste your robots.txt and find out in one click whether GPTBot, ClaudeBot, Google-Extended, PerplexityBot, and 11 other named AI crawlers are allowed, blocked, or partially…", "pages": 4, "launched": "2026-09-07" }, { "slug": "ai-engineering-academy", "name": "Free Electronics Calculators", "url": "https://marisstella.app/ai-engineering-academy/", "category": "Learning & practice", "description": "A small set of free, private electronics calculators that run entirely in your browser: resistor color codes and Ohm's law, LED series resistors, voltage dividers with load…", "pages": 3, "launched": "2026-08-18" }, { "slug": "aid-award-letter-comparator", "name": "Compare college financial aid offers by what you will really pay", "url": "https://marisstella.app/aid-award-letter-comparator/", "category": "Creator & solo earner income", "description": "Free financial aid award letter comparator. Type in each college's cost, grants, loans and work-study and see the true four-year cost, loans repaid with interest, the year-2 price…", "pages": 2, "launched": "2026-10-17" }, { "slug": "airbnb-earnings-report-analyzer", "name": "Airbnb Earnings Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/airbnb-earnings-report-analyzer/", "category": "Back-office money & contracts", "description": "Free Airbnb earnings analyzer: drop in your Transaction history CSV and see net earnings, fee share, nightly rate and occupancy per listing, which months and stay lengths earn the…", "pages": 1, "launched": "2026-09-29" }, { "slug": "airbnb-payout-to-journal", "name": "Airbnb transaction history to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/airbnb-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Airbnb host earnings to journal converter: splits every reservation into rental income, cleaning fees, Airbnb host fees and cancellations, books pass-through occupancy tax as…", "pages": 1, "launched": "2026-10-05" }, { "slug": "amazon-fba-calculator", "name": "Amazon FBA vs FBM Profit Calculator", "url": "https://marisstella.app/amazon-fba-calculator/", "category": "Marketplace seller tools", "description": "Free Amazon FBA vs FBM calculator: compare fulfillment paths after expected returns. Get net profit, max buy cost, the return rate that wipes the listing, when inbound placement…", "pages": 24, "launched": "2026-08-24" }, { "slug": "amazon-inventory-loader-check", "name": "Amazon Inventory Loader Check — free, private, in your browser", "url": "https://marisstella.app/amazon-inventory-loader-check/", "category": "Marketplace seller tools", "description": "Free Amazon Seller Central inventory file checker: finds comma or UTF-16 files, UPCs that lost a leading zero, bad UPC and EAN check digits, scientific-notation SKUs, bad prices…", "pages": 1, "launched": "2026-10-04" }, { "slug": "amazon-ppc-search-term-analyzer", "name": "Amazon PPC Search Term Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/amazon-ppc-search-term-analyzer/", "category": "Marketplace seller tools", "description": "Free Amazon PPC search term analyzer: drop in your Sponsored Products search term report CSV and see wasted ad spend graded by evidence, negative keyword candidates, terms to…", "pages": 1, "launched": "2026-09-29" }, { "slug": "amazon-seller-profit-analyzer", "name": "Amazon Seller Profit Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/amazon-seller-profit-analyzer/", "category": "Marketplace seller tools", "description": "Free Amazon seller profit analyzer: drop in your Seller Central Transaction report CSV and get profit per SKU, a fee waterfall, ad spend, refund and reimbursement findings. Runs…", "pages": 1, "launched": "2026-09-29" }, { "slug": "amazon-settlement-to-journal", "name": "Amazon settlement report to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/amazon-settlement-to-journal/", "category": "Marketplace seller tools", "description": "Free Amazon settlement report to journal converter: proves the rows add up to the deposit, splits sales, fees, refunds and tax by month, and downloads a balanced journal for Xero…", "pages": 1, "launched": "2026-10-05" }, { "slug": "amusement-route-location-calculator", "name": "Amusement Route Location Calculator — is each arcade, pool table or claw machine location worth the drive?", "url": "https://marisstella.app/amusement-route-location-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for coin-op route operators. Enter each location's weekly take, commission, visits and miles; it shows profit per route hour, the weekly take you need, and the…", "pages": 2, "launched": "2026-10-11" }, { "slug": "android-data-safety-check", "name": "Android Data Safety Checker", "url": "https://marisstella.app/android-data-safety-check/", "category": "CI checks & developer gates", "description": "Free, browser-local checker: scans your AndroidManifest.xml permissions and Gradle dependencies for known analytics/ads/crash SDKs, and compares them against the Data safety…", "pages": 4, "launched": "2026-09-17" }, { "slug": "apiary-profit-planner", "name": "Is beekeeping profitable? Free apiary profit planner", "url": "https://marisstella.app/apiary-profit-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free beekeeping profit calculator. Project colonies, honey, nuc sales and pollination income year by year; see winter-loss sensitivity, break-even hives and payback. Nothing…", "pages": 1, "launched": "2026-10-07" }, { "slug": "app-listing-metadata-check", "name": "App Store & Google Play Listing Checker", "url": "https://marisstella.app/app-listing-metadata-check/", "category": "CI checks & developer gates", "description": "Free tool: paste your App Store or Google Play listing text and check it before you submit — character limits, wasted keyword-field characters, repeated words, promotional claims…", "pages": 1, "launched": "2026-10-06" }, { "slug": "app-review-insights", "name": "App Review Insights — free, private, CSV in your browser", "url": "https://marisstella.app/app-review-insights/", "category": "Marketplace seller tools", "description": "Free app review analyzer: drop in your Google Play or App Store review CSV and see which release dropped your rating, which complaints cost the most stars, and which unhappy…", "pages": 1, "launched": "2026-10-10" }, { "slug": "app-store-commission-calculator", "name": "What does the App Store really cost you versus web checkout?", "url": "https://marisstella.app/app-store-commission-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly app revenue and average in-app price and see what Apple (30% or 15%), Google Play and web checkout via Stripe or Paddle take, your net payout, 12-month totals…", "pages": 2, "launched": "2026-10-03" }, { "slug": "app-store-sales-report-analyzer", "name": "App Store Sales Report Analyzer — free, private, in your browser", "url": "https://marisstella.app/app-store-sales-report-analyzer/", "category": "Back-office money & contracts", "description": "Free analyzer for iOS developers: drop in your App Store Connect Summary Sales report and see net proceeds by product, country and month, refund rates, subscription renewals, and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "app-store-screenshot-check", "name": "App Store Screenshot & Icon Checker", "url": "https://marisstella.app/app-store-screenshot-check/", "category": "CI checks & developer gates", "description": "Free tool: drop your App Store Connect or Google Play listing images in and check them before you upload — app icon transparency (the classic \"can't contain an alpha channel\"…", "pages": 3, "launched": "2026-09-11" }, { "slug": "app-subscription-proceeds-calculator", "name": "What does an app subscriber really leave you after store fees?", "url": "https://marisstella.app/app-subscription-proceeds-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for indie app developers: what a subscription charge really leaves after store fees, tax and refunds, what a subscriber is worth at your churn, how long payback…", "pages": 2, "launched": "2026-10-03" }, { "slug": "apparel-decoration-price-calculator", "name": "Screen Printing & Embroidery Price Calculator — cost per shirt, setup & margin", "url": "https://marisstella.app/apparel-decoration-price-calculator/", "category": "Service business pricing & quotes", "description": "Free screen printing, embroidery and DTF pricing calculator for custom apparel shops: work out your real cost per shirt from screens or digitising, press or stitch time, blanks…", "pages": 5, "launched": "2026-09-10" }, { "slug": "appliance-repair-quote-calculator", "name": "Appliance Repair Quote Calculator", "url": "https://marisstella.app/appliance-repair-quote-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price an appliance repair service call, then see whether finishing the repair still beats recommending replace — customer cost per remaining year versus what you keep if they…", "pages": 5, "launched": "2026-08-26" }, { "slug": "appointment-deposit-calculator", "name": "Appointment Deposit Calculator", "url": "https://marisstella.app/appointment-deposit-calculator/", "category": "Back-office money & contracts", "description": "Free appointment deposit calculator for salons, trainers, tutors, photographers, and other service businesses. Set a deposit, see the balance due, check whether it pays for itself…", "pages": 6, "launched": "2026-08-27" }, { "slug": "appointment-no-show-analyzer", "name": "Appointment No-Show Analyzer — free, private, in your browser", "url": "https://marisstella.app/appointment-no-show-analyzer/", "category": "Service business pricing & quotes", "description": "Free tool for salons, barbers, clinics, tutors and trainers: drop in your booking export and see your no-show and late-cancel rate, the revenue lost, which weekdays, hours and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "appointment-no-show-cost-calculator", "name": "What do no-shows cost your practice? Free calculator", "url": "https://marisstella.app/appointment-no-show-cost-calculator/", "category": "Service business pricing & quotes", "description": "Free no-show cost calculator for dental, medical, therapy, chiropractic, vet and salon practices: annual revenue lost to no-shows and late cancels, cost after refills, best…", "pages": 1, "launched": "2026-10-08" }, { "slug": "appointment-overbooking-optimizer", "name": "Appointment Overbooking Optimizer — free, private, in your browser", "url": "https://marisstella.app/appointment-overbooking-optimizer/", "category": "Back-office money & contracts", "description": "Free appointment overbooking calculator for clinics, dentists, salons and studios. Enter your slots, no-show rate or daily booked and showed counts, and what an over-full day…", "pages": 1, "launched": "2026-09-30" }, { "slug": "appraisal-assignment-picker", "name": "Which appraisal assignments should an independent appraiser accept?", "url": "https://marisstella.app/appraisal-assignment-picker/", "category": "Service business pricing & quotes", "description": "Paste the appraisal assignments you have been offered and get the set that earns the most before the due dates, the order to work them, and the fee each declined file would need…", "pages": 2, "launched": "2026-10-02" }, { "slug": "arcade-game-payback-calculator", "name": "Arcade game payback calculator: which games earn their floor space? Free, private", "url": "https://marisstella.app/arcade-game-payback-calculator/", "category": "Service business pricing & quotes", "description": "Free arcade game payback calculator: plays, credits, ticket payout, floor space and upkeep become weekly profit, payback, break-even plays and a keep, watch or cut verdict for…", "pages": 1, "launched": "2026-10-12" }, { "slug": "artificial-turf-bid-calculator", "name": "Artificial Turf Bid Calculator", "url": "https://marisstella.app/artificial-turf-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price an artificial turf install from landscape, pet, or putting-green turf: lawn square footage, 15-foot-roll waste, crushed-rock base, sod demo, infill, seams, and tree wells —…", "pages": 4, "launched": "2026-08-26" }, { "slug": "asbestos-abatement-bid-calculator", "name": "Asbestos Abatement Bid Calculator", "url": "https://marisstella.app/asbestos-abatement-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free bid calculator for licensed asbestos abatement contractors: price a removal job by OSHA/EPA containment class (I/II/III), square footage, crew and supervisor rates, air…", "pages": 3, "launched": "2026-09-17" }, { "slug": "asphalt-driveway-pave-bid-calculator", "name": "Asphalt Driveway Paving Bid Calculator", "url": "https://marisstella.app/asphalt-driveway-pave-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price an asphalt driveway from overlay, mill-and-overlay, or full-depth: square footage, thickness, street apron, failed base, and sawcut — not a published $3.50-a-square-foot…", "pages": 5, "launched": "2026-08-26" }, { "slug": "asphalt-sealcoat-bid-calculator", "name": "Asphalt Sealcoating Bid Calculator", "url": "https://marisstella.app/asphalt-sealcoat-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a sealcoating job from square feet, coats, oil spots, crack fill, and the drive — not a cents-per-foot special. See gallons, walk-away price, and margin before you quote.", "pages": 4, "launched": "2026-08-26" }, { "slug": "atm-route-margin", "name": "ATM Route Margin Calculator", "url": "https://marisstella.app/atm-route-margin/", "category": "Service business pricing & quotes", "description": "Free calculator for independent ATM route operators: find real monthly profit per location after the surcharge split, processor fees, and vault cash cost of capital, then see…", "pages": 5, "launched": "2026-09-06" }, { "slug": "ats-resume-checker", "name": "ATS Resume Checker — the copy-paste test, free, no sign-up", "url": "https://marisstella.app/ats-resume-checker/", "category": "Creator & solo earner income", "description": "Free ATS resume checker, no sign-up and nothing uploaded. Paste the text copied out of your resume and instantly see the formatting issues that break applicant-tracking-system…", "pages": 4, "launched": "2026-09-07" }, { "slug": "attic-insulation-bid-calculator", "name": "Attic Insulation Bid Calculator", "url": "https://marisstella.app/attic-insulation-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a blown-in attic insulation job from floor areas, existing versus target R-value, bag yield, air-sealing penetrations, and baffles — not a flat price per square foot. See…", "pages": 4, "launched": "2026-08-26" }, { "slug": "au-gst-registration-checker", "name": "Australia GST registration checker: do you have to register? Free, private", "url": "https://marisstella.app/au-gst-registration-checker/", "category": "Back-office money & contracts", "description": "Free Australia GST registration checker: enter your last 12 months of sales to see whether GST turnover has reached AUD 75,000, test your projected turnover, and get your 21-day…", "pages": 1, "launched": "2026-10-13" }, { "slug": "au-redundancy-pay-calculator", "name": "Australian redundancy pay calculator. Free, private", "url": "https://marisstella.app/au-redundancy-pay-calculator/", "category": "Back-office money & contracts", "description": "Free Australian redundancy pay calculator: enter pay, start and end dates, age and employer size to see NES redundancy weeks, notice pay and accrued leave. Runs in your browser…", "pages": 1, "launched": "2026-10-13" }, { "slug": "au-sole-trader-tax-set-aside-calculator", "name": "Australia Sole Trader Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/au-sole-trader-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free Australian sole trader tax calculator: enter income and expenses to see income tax, Medicare levy, optional HELP repayment and how much of every invoice to set aside. Runs in…", "pages": 1, "launched": "2026-10-14" }, { "slug": "auction-car-flip-calculator", "name": "Auction Car Flip Calculator — free, private, in your browser", "url": "https://marisstella.app/auction-car-flip-calculator/", "category": "Marketplace seller tools", "description": "Auction car flip calculator for dealers and flippers. Enter resale price, repairs, the auction's buyer fee tiers, transport, tax and holding costs to get the max bid, the…", "pages": 1, "launched": "2026-10-01" }, { "slug": "augusta-rule-calculator", "name": "Augusta Rule Calculator — free, private, in your browser", "url": "https://marisstella.app/augusta-rule-calculator/", "category": "Back-office money & contracts", "description": "Free Augusta rule calculator. Enter days rented to your own business, a fair daily rent and your tax rates to see the federal, self-employment and state tax saved, net of costs…", "pages": 1, "launched": "2026-09-30" }, { "slug": "auth-mau-pricing-calculator", "name": "What will authentication cost at your user count, and who is cheapest?", "url": "https://marisstella.app/auth-mau-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly active users and see what Clerk, Auth0, AWS Cognito, Firebase, Supabase Auth and WorkOS charge, the 12-month spend under your growth rate, and the user count…", "pages": 2, "launched": "2026-10-03" }, { "slug": "auto-detailing-service-menu-picker", "name": "Auto detailing service menu picker", "url": "https://marisstella.app/auto-detailing-service-menu-picker/", "category": "Service business pricing & quotes", "description": "Free tool for auto detailers and mobile detailing shops with limited bay hours: get the exact most profitable set of services to sell after product cost, booking and card fees…", "pages": 1, "launched": "2026-10-09" }, { "slug": "auto-glass-bid-calculator", "name": "Auto Glass Bid Calculator", "url": "https://marisstella.app/auto-glass-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a windshield or door-glass replacement from glass source, ADAS camera/sensor calibration, mobile trip fee, and cash vs. insurance billing — and get warned before you send a…", "pages": 3, "launched": "2026-09-24" }, { "slug": "auto-loan-interest-deduction-calculator", "name": "Auto Loan Interest Deduction Calculator — free 2026 estimator", "url": "https://marisstella.app/auto-loan-interest-deduction-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the new federal auto loan interest deduction (One Big Beautiful Bill Act, tax years 2025-2028): applies the $10,000 cap, the $200-per-$1,000 MAGI phase-out…", "pages": 3, "launched": "2026-09-24" }, { "slug": "auto-repair-effective-labor-rate", "name": "Effective Labor Rate Calculator for Auto Repair Shops", "url": "https://marisstella.app/auto-repair-effective-labor-rate/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Your posted door rate is not the rate you collect. Enter one month of customer-pay, warranty and internal hours and see your real effective labor rate, exactly where the rest of…", "pages": 8, "launched": "2026-09-11" }, { "slug": "automatic-driveway-gate-bid-calculator", "name": "Automatic Driveway Gate Bid Calculator", "url": "https://marisstella.app/automatic-driveway-gate-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price an automatic driveway gate from single swing, dual swing, or slide: opening width, leaf material, columns, power, loops, and access — not a published $4,500 kit special. See…", "pages": 4, "launched": "2026-08-26" }, { "slug": "aws-bill-change-explainer", "name": "Why did my AWS bill go up this month?", "url": "https://marisstella.app/aws-bill-change-explainer/", "category": "CI checks & developer gates", "description": "Paste the CSV from AWS Cost Explorer for two months and see which services explain the rise in your AWS bill, ranked, with partial-month normalisation and a checklist of common…", "pages": 2, "launched": "2026-10-03" }, { "slug": "aws-commitment-breakeven-calculator", "name": "AWS Commitment Break-Even Calculator — how much to commit, not just whether", "url": "https://marisstella.app/aws-commitment-breakeven-calculator/", "category": "CI checks & developer gates", "description": "Free AWS Savings Plan and Reserved Instance calculator. Paste your hourly or daily usage and each option's discount to find the commitment that saves the most, its break-even…", "pages": 1, "launched": "2026-09-30" }, { "slug": "aws-iam-policy-risk-check", "name": "AWS IAM Policy Risk Check — free, private, paste-the-policy", "url": "https://marisstella.app/aws-iam-policy-risk-check/", "category": "CI checks & developer gates", "description": "Free AWS IAM policy checker: paste a policy, trust policy or bucket policy and see admin wildcards, privilege-escalation actions, NotAction grants and public principals with fixes…", "pages": 1, "launched": "2026-10-10" }, { "slug": "axe-throwing-bar-profit-calculator", "name": "Axe Throwing Bar Profit Calculator — monthly profit, payback and break-even fill", "url": "https://marisstella.app/axe-throwing-bar-profit-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for axe throwing bars and venues. Enter thrower capacity, sessions, fill, ticket price, private events, leagues, staff, rent and the build; it shows monthly…", "pages": 2, "launched": "2026-10-12" }, { "slug": "babysitting-business-kit", "name": "Babysitting Business Kit: free, private, in your browser", "url": "https://marisstella.app/babysitting-business-kit/", "category": "Self-hosted business apps", "description": "Free app for babysitters who run their own business: score and answer inquiries, quote and schedule sits without double-booking, track who has paid, set aside self-employment tax…", "pages": 9, "launched": "2026-10-30" }, { "slug": "backdoor-roth-pro-rata-calculator", "name": "Backdoor Roth Pro-Rata Calculator — free, Form 8606", "url": "https://marisstella.app/backdoor-roth-pro-rata-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the backdoor Roth pro-rata rule: how much of your Roth conversion is taxable given your after-tax basis and your December 31 traditional, SEP and SIMPLE IRA…", "pages": 1, "launched": "2026-09-29" }, { "slug": "backflow-test-fee-calculator", "name": "Backflow Test Fee Calculator — multi-device job quote, free", "url": "https://marisstella.app/backflow-test-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free backflow-preventer test fee calculator: per-device test fee with a multi-device discount, a per-device report-filing fee, a travel fee, and a retest fee for failed devices…", "pages": 4, "launched": "2026-09-16" }, { "slug": "backup-file-exposure-check", "name": "Backup File Exposure Checker", "url": "https://marisstella.app/backup-file-exposure-check/", "category": "CI checks & developer gates", "description": "Enter a site URL to test eight well-known backup filenames (backup.zip, db.sql and more) for a publicly served site or database backup. Nothing uploaded to us.", "pages": 3, "launched": "2026-09-24" }, { "slug": "backup-verification-evidence", "name": "Backup night-over-night trend", "url": "https://marisstella.app/backup-verification-evidence/", "category": "Compliance checks & evidence records", "description": "Drop backup-evidence run records in your browser to see whether last night's archive shrank or a verified job quietly got worse. Nothing is uploaded.", "pages": 4, "launched": "2026-08-24" }, { "slug": "backyard-egg-profit-calculator", "name": "What do you really make on a dozen eggs?", "url": "https://marisstella.app/backyard-egg-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for backyard egg sellers: what a dozen eggs costs you, how many hours it takes, your profit per dozen and per hour, the price per dozen you need to earn a wage…", "pages": 2, "launched": "2026-10-03" }, { "slug": "backyard-honey-profit-calculator", "name": "What do you really make on a pound of honey?", "url": "https://marisstella.app/backyard-honey-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for backyard beekeepers who sell honey: what a pound costs you, how many hours it takes, your profit per pound and per hour, the price per pound you need to earn a…", "pages": 2, "launched": "2026-10-03" }, { "slug": "bai2-statement-reader", "name": "BAI2 Statement Reader — free, private, in your browser", "url": "https://marisstella.app/bai2-statement-reader/", "category": "Back-office money & contracts", "description": "Free BAI2 file viewer and checker: turns a bank's BAI2 statement into accounts, balances and a transaction list you can download as CSV, and checks the 49, 98 and 99 control…", "pages": 1, "launched": "2026-10-04" }, { "slug": "bai2-to-ofx-converter", "name": "BAI2 to OFX, QBO, QIF and Xero CSV — free, private", "url": "https://marisstella.app/bai2-to-ofx-converter/", "category": "Compliance checks & evidence records", "description": "Free BAI2 converter: check the file's control totals and balances, then download OFX/QBO for QuickBooks and Quicken, QIF, or a Xero statement CSV, with stable transaction IDs…", "pages": 1, "launched": "2026-10-05" }, { "slug": "bail-bond-agency-exposure-calculator", "name": "Bail Bond Agency Exposure Calculator — free", "url": "https://marisstella.app/bail-bond-agency-exposure-calculator/", "category": "Marketplace seller tools", "description": "Free tool for bail bond agents: enter your open bonds, collateral and surety terms to see net premium, the loss if bonds are forfeited, whether cash covers the largest ones, and a…", "pages": 1, "launched": "2026-10-12" }, { "slug": "bakery-production-scheduler", "name": "Bakery production schedule from your orders, free", "url": "https://marisstella.app/bakery-production-scheduler/", "category": "Restaurant, bar & food truck pricing", "description": "Free bakery production scheduler. Paste your products and orders with due times; get a backwards-planned prep, proof and bake timeline, the ovens and bakers you need, and which…", "pages": 1, "launched": "2026-10-07" }, { "slug": "ball-python-morph-pairing-planner", "name": "Ball Python Morph Pairing Planner — free, private, in your browser", "url": "https://marisstella.app/ball-python-morph-pairing-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free ball python morph pairing planner. Enter your females and males with their morphs and hets and what each morph sells for; get the genetics odds for every pairing, expected…", "pages": 2, "launched": "2026-10-07" }, { "slug": "band-tour-profit-planner", "name": "Band Tour Profit Planner — free, private, in your browser", "url": "https://marisstella.app/band-tour-profit-planner/", "category": "Service business pricing & quotes", "description": "Free band tour profit planner. Enter your shows, venue deals (flat, door or versus), miles, rooms and merch and see profit per show and for the tour, break-even attendance, the…", "pages": 2, "launched": "2026-10-12" }, { "slug": "bandcamp-sales-report-analyzer", "name": "Bandcamp Sales Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/bandcamp-sales-report-analyzer/", "category": "Creator & solo earner income", "description": "Free analyzer for Bandcamp artists and labels: drop in your sales report CSV and see fees paid, net per item, small-sale fee drag, vinyl and merch profit after your costs, best…", "pages": 1, "launched": "2026-09-29" }, { "slug": "bank-csv-to-qbo-converter", "name": "Bank CSV to QBO Converter — free, private, in your browser", "url": "https://marisstella.app/bank-csv-to-qbo-converter/", "category": "Back-office money & contracts", "description": "Free bank CSV to QBO, OFX and QIF converter for QuickBooks and Quicken: handles debit/credit columns, US and European dates and decimals, catches bad rows and duplicates, and runs…", "pages": 1, "launched": "2026-10-04" }, { "slug": "bank-statement-pdf-to-csv", "name": "Bank statement PDF to CSV, checked against the statement's own balances. Free, private", "url": "https://marisstella.app/bank-statement-pdf-to-csv/", "category": "Compliance checks & evidence records", "description": "Free bank and credit card statement PDF to CSV converter that proves the result: opening balance plus the transactions must equal the closing balance. CSV for Xero, QuickBooks…", "pages": 1, "launched": "2026-10-05" }, { "slug": "barbershop-chair-profit-calculator", "name": "Barbershop Chair Profit Calculator — free, private", "url": "https://marisstella.app/barbershop-chair-profit-calculator/", "category": "Marketplace seller tools", "description": "Free barbershop calculator: enter haircut, beard and combo prices, chair minutes, supplies, no-show rate, rent and commission, and see profit per cut and per chair hour, the price…", "pages": 1, "launched": "2026-10-11" }, { "slug": "basement-finishing-bid-calculator", "name": "Basement Finishing Bid Calculator", "url": "https://marisstella.app/basement-finishing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a basement finish from finished square feet, rec-room versus framed-finish versus legal-living, drop ceiling versus drywall, carpet versus LVP, bath, egress, and extras —…", "pages": 6, "launched": "2026-08-26" }, { "slug": "basement-waterproofing-bid-calculator", "name": "Basement Waterproofing Bid Calculator", "url": "https://marisstella.app/basement-waterproofing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price an interior French drain, exterior excavation, or crawl encapsulation from perimeter, wall height, window wells, crack repair, sump pit, backup pump, and freeze-protected…", "pages": 4, "launched": "2026-08-26" }, { "slug": "bed-bug-heat-treatment-price-calculator", "name": "Bed Bug Heat Treatment Bid Calculator — free, private", "url": "https://marisstella.app/bed-bug-heat-treatment-price-calculator/", "category": "Service business pricing & quotes", "description": "Free bed bug heat treatment bid calculator: enter the floor area, clutter, heaters, crew, fuel and callback rate, and get a price, a price per square foot and a comparison with a…", "pages": 1, "launched": "2026-10-11" }, { "slug": "beef-cattle-ration-optimizer", "name": "Beef Cattle Ration Optimizer — free, private, in your browser", "url": "https://marisstella.app/beef-cattle-ration-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free beef cattle ration optimizer. Enter your feeds with price per ton and nutrient content, choose cow, bull, stocker or finishing class, and get the least-cost ration per head…", "pages": 2, "launched": "2026-10-07" }, { "slug": "bid-leveling-worksheet", "name": "Bid Leveling Worksheet — free, private, paste-your-bids", "url": "https://marisstella.app/bid-leveling-worksheet/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free bid leveling worksheet: paste subcontractor bids, price the excluded and unaddressed scope at your estimate, and see whether the low bid is still lowest. Runs in your…", "pages": 1, "launched": "2026-10-10" }, { "slug": "bid-price-engine", "name": "Bid Price Engine — price any job at the margin you need", "url": "https://marisstella.app/bid-price-engine/", "category": "Self-hosted business apps", "description": "Free job bid calculator for contractors and service trades: labor with payroll burden, materials with waste, subs, contingency and overhead turned into a price at the profit…", "pages": 2, "launched": "2026-10-19" }, { "slug": "bid-win-rate-optimizer", "name": "Bid Win-Rate Optimizer — free, private, in your browser", "url": "https://marisstella.app/bid-win-rate-optimizer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free bid win-rate calculator for contractors, agencies and freelancers. Paste your past quotes (price, won or lost, cost) to see how your win chance falls as your markup rises…", "pages": 1, "launched": "2026-09-30" }, { "slug": "bigcommerce-product-csv-check", "name": "BigCommerce Product CSV Check — free, private, in your browser", "url": "https://marisstella.app/bigcommerce-product-csv-check/", "category": "Marketplace seller tools", "description": "Free BigCommerce product CSV checker: finds SKU rows with no product or option set, duplicate SKUs, bad prices, wrong Y/N flags, wrong barcode check digits, broken image URLs…", "pages": 1, "launched": "2026-10-04" }, { "slug": "bigquery-query-cost-advisor", "name": "Why is your BigQuery bill so high?", "url": "https://marisstella.app/bigquery-query-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your BigQuery query groups (runs per month, GB billed, slot-hours) and see on-demand vs Editions cost, the expensive queries to cap with maximum_bytes_billed, and repeat…", "pages": 2, "launched": "2026-10-02" }, { "slug": "bike-shop-repair-profit-calculator", "name": "Bike Shop Repair Profit Calculator — free, private", "url": "https://marisstella.app/bike-shop-repair-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free bike repair shop calculator: enter job prices, bench minutes, materials, technician pay, tools and rent, and see profit per job and per bench hour, break-even volume and the…", "pages": 1, "launched": "2026-10-11" }, { "slug": "biohazard-cleanup-bid-calculator", "name": "Biohazard Cleanup Bid Calculator", "url": "https://marisstella.app/biohazard-cleanup-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free calculator for biohazard and trauma-scene remediation technicians: price a job from crew labor, PPE decon cycles, and regulated-waste disposal billed per container (not per…", "pages": 3, "launched": "2026-09-17" }, { "slug": "birth-doula-package-pricing-calculator", "name": "Birth doula package pricing calculator", "url": "https://marisstella.app/birth-doula-package-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for birth doulas: your real pay per hour after long labors, driving, on-call days, backup cover and overhead, and the package price that reaches your target…", "pages": 1, "launched": "2026-10-09" }, { "slug": "boat-rental-fleet-profit-calculator", "name": "Boat Rental Fleet Profit Calculator — free, private", "url": "https://marisstella.app/boat-rental-fleet-profit-calculator/", "category": "Service business pricing & quotes", "description": "Find out what a rental boat really earns after fuel, dock, insurance, a short season and weather cancellations, and whether a marketplace listing or a captained charter pays it…", "pages": 1, "launched": "2026-10-11" }, { "slug": "boba-tea-shop-profit-calculator", "name": "Boba Tea Shop Profit Calculator — free, private", "url": "https://marisstella.app/boba-tea-shop-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free pro forma for boba, bubble tea and specialty drink shops: profit per cup, break-even cups a day with the loan, the price for your target margin, delivery-app cost, and a…", "pages": 1, "launched": "2026-10-13" }, { "slug": "boi-reporting-exemption-checker", "name": "BOI Reporting Exemption Checker — free, 2026", "url": "https://marisstella.app/boi-reporting-exemption-checker/", "category": "Compliance checks & evidence records", "description": "Free checker for whether your company still owes a federal Corporate Transparency Act beneficial ownership report after FinCEN's August 2026 final rule permanently exempted every…", "pages": 3, "launched": "2026-09-25" }, { "slug": "boiler-replacement-bid-calculator", "name": "Boiler Replacement Bid Calculator", "url": "https://marisstella.app/boiler-replacement-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Bid a boiler changeout the way the trade does — plant, system, extras, and whether Saturday still pays — not a published special — and see the margin before you send the price.", "pages": 8, "launched": "2026-08-25" }, { "slug": "bonus-depreciation-calculator", "name": "Bonus Depreciation vs. Section 179 Calculator — free, 2025-2026", "url": "https://marisstella.app/bonus-depreciation-calculator/", "category": "Back-office money & contracts", "description": "Free calculator comparing 100% bonus depreciation, a Section 179 election, and plain MACRS depreciation for a new equipment or asset purchase — with the 2025/2026 OBBBA dollar…", "pages": 2, "launched": "2026-09-25" }, { "slug": "bonus-take-home-gross-up-calculator", "name": "How much of my bonus do I keep? Free take-home and gross-up calculator", "url": "https://marisstella.app/bonus-take-home-gross-up-calculator/", "category": "Service business pricing & quotes", "description": "Free bonus calculator: what a bonus pays after the 22% federal supplemental withholding, Social Security, Medicare and state tax, whether you owe or get a refund at filing, and…", "pages": 1, "launched": "2026-10-08" }, { "slug": "booking-request-chooser", "name": "Which booking requests should you accept?", "url": "https://marisstella.app/booking-request-chooser/", "category": "Back-office money & contracts", "description": "Paste your confirmed bookings and pending requests and get the exact set of requests to accept for the highest income, counting turnover cost and the dead gap nights a short stay…", "pages": 2, "launched": "2026-10-02" }, { "slug": "bookkeeping-client-fee-calculator", "name": "What should you charge a new bookkeeping client each month?", "url": "https://marisstella.app/bookkeeping-client-fee-calculator/", "category": "Back-office money & contracts", "description": "Price a monthly bookkeeping retainer from transactions, accounts, payroll, AR/AP and sales-tax filings: the minimum fee for your target hourly, a recommended fee, a one-time…", "pages": 2, "launched": "2026-10-02" }, { "slug": "booth-rent-vs-commission", "name": "Booth Rent vs Commission Calculator", "url": "https://marisstella.app/booth-rent-vs-commission/", "category": "Service business pricing & quotes", "description": "Free booth rent vs commission calculator for hair stylists, barbers, and nail techs. Compare take-home and hourly pay on your own book after rent, card fees, backbar, and unpaid…", "pages": 4, "launched": "2026-08-26" }, { "slug": "bounce-house-rental-calculator", "name": "Bounce House Rental Calculator", "url": "https://marisstella.app/bounce-house-rental-calculator/", "category": "Service business pricing & quotes", "description": "Price a bounce house or inflatable rental booking from the truck's two round trips, setup and teardown labor, a generator when there is no outlet, a wet-unit attendant, and…", "pages": 5, "launched": "2026-09-10" }, { "slug": "boutique-fitness-studio-pricing-planner", "name": "Is my studio's unlimited membership priced right? Free pricing planner", "url": "https://marisstella.app/boutique-fitness-studio-pricing-planner/", "category": "Service business pricing & quotes", "description": "Free pricing planner for yoga, pilates, barre and cycling studios: unlimited memberships, class packs and drop-ins in; monthly profit, what each plan earns per visit, break-even…", "pages": 1, "launched": "2026-10-08" }, { "slug": "bowling-center-profit-calculator", "name": "Bowling center calculator: what utilization do you need to break even? Free, private", "url": "https://marisstella.app/bowling-center-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free bowling center profit calculator: lanes, peak and off-peak lane-hour prices, utilization, leagues, parties and events, food and drink, staffing, rent and a loan become…", "pages": 1, "launched": "2026-10-13" }, { "slug": "braiding-studio-profit-calculator", "name": "Braiding Studio Profit Calculator — free, private", "url": "https://marisstella.app/braiding-studio-profit-calculator/", "category": "Marketplace seller tools", "description": "Free braiding studio calculator: enter knotless, cornrow and twist prices, chair minutes, supplies, no-show rate, rent and commission, and see profit per style and per chair hour…", "pages": 1, "launched": "2026-10-11" }, { "slug": "branch-protection-drift-check", "name": "Has your branch protection drifted from policy?", "url": "https://marisstella.app/branch-protection-drift-check/", "category": "CI checks & developer gates", "description": "Paste your repo's GitHub branch protection settings and declared policy to find every rule that has drifted weaker than intended. Free, nothing uploaded.", "pages": 3, "launched": "2026-09-17" }, { "slug": "brand-deal-rate-calculator", "name": "Brand Deal Rate Calculator — free, no sign-up", "url": "https://marisstella.app/brand-deal-rate-calculator/", "category": "Creator & solo earner income", "description": "Free influencer brand deal rate calculator. Enter your follower count, engagement rate, and platform to get a price range for a feed post, Story, Reel/short video, and dedicated…", "pages": 4, "launched": "2026-09-11" }, { "slug": "breakeven-roas-calculator", "name": "Break-Even ROAS Calculator — free, private, in your browser", "url": "https://marisstella.app/breakeven-roas-calculator/", "category": "Marketplace seller tools", "description": "Free break-even ROAS and max CPA calculator for ecommerce and DTC stores. Enter price, cost of goods, shipping, fees, returns and discounts, add repeat-purchase LTV, and see the…", "pages": 2, "launched": "2026-10-01" }, { "slug": "brevo-contacts-csv-check", "name": "Brevo Contacts CSV Check — free, private, in your browser", "url": "https://marisstella.app/brevo-contacts-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Brevo (Sendinblue) contacts import CSV checker: finds invalid and duplicate emails, rows with neither email nor SMS, SMS numbers with no country code or ruined by Excel…", "pages": 1, "launched": "2026-10-05" }, { "slug": "brewery-excise-tax-calculator", "name": "Brewery Excise Tax Calculator — free, private", "url": "https://marisstella.app/brewery-excise-tax-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free federal beer excise tax calculator for craft brewers: enter kegs, cases and barrels and see the CBMA $3.50 and $16 per barrel tax, the cost per keg and case, and what growing…", "pages": 1, "launched": "2026-10-10" }, { "slug": "brewery-tank-schedule-optimizer", "name": "Brewery tank schedule optimizer", "url": "https://marisstella.app/brewery-tank-schedule-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free brewery tank schedule optimizer: enter your fermenters, bright tanks and beers, and get the brew-day and tank plan that finishes the most margin, with batch minimums and…", "pages": 1, "launched": "2026-10-09" }, { "slug": "bridal-hair-makeup-pricing-calculator", "name": "Bridal Hair & Makeup Pricing Calculator — Total, Balance Due & Assistant Check", "url": "https://marisstella.app/bridal-hair-makeup-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for bridal hair and makeup artists: price the bride and party, add early-start and travel fees, and check one artist can cover the schedule.", "pages": 4, "launched": "2026-09-16" }, { "slug": "brrrr-calculator", "name": "BRRRR Calculator — free, private, in your browser", "url": "https://marisstella.app/brrrr-calculator/", "category": "Back-office money & contracts", "description": "Free BRRRR calculator for real estate investors. Enter price, rehab, hard-money terms, ARV and refinance terms to see the cash left in the deal, refinance cash-out, cash flow, the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "bundle-discount-optimizer", "name": "Bundle Discount Optimizer — free, private, in your browser", "url": "https://marisstella.app/bundle-discount-optimizer/", "category": "Marketplace seller tools", "description": "Free bundle pricing tool for Shopify, Etsy and Amazon sellers. Paste your order history and product costs to find which products customers already buy together, the bundle…", "pages": 1, "launched": "2026-09-30" }, { "slug": "business-insurance-policy-reader", "name": "Check your business insurance policy for gaps and client-contract limits. Free, private", "url": "https://marisstella.app/business-insurance-policy-reader/", "category": "Marketplace seller tools", "description": "Free business insurance policy reader: paste a general liability, professional liability or BOP policy and get the limits, deductible, claims-made trigger and renewal dates…", "pages": 1, "launched": "2026-10-12" }, { "slug": "business-loan-offer-comparator", "name": "Business Loan Offer Comparator — free, private, in your browser", "url": "https://marisstella.app/business-loan-offer-comparator/", "category": "Back-office money & contracts", "description": "Free business loan comparison tool. Type in the term-loan, SBA-style and merchant cash advance offers you have received and see the true APR with fees, total repaid, cash actually…", "pages": 2, "launched": "2026-10-01" }, { "slug": "business-vehicle-depreciation-calculator", "name": "How much of your business vehicle can you deduct this year?", "url": "https://marisstella.app/business-vehicle-depreciation-calculator/", "category": "Back-office money & contracts", "description": "Enter the vehicle price, class and business-use percentage and see the first-year deduction and tax saved under regular MACRS, 100% bonus depreciation and Section 179, with the…", "pages": 2, "launched": "2026-10-04" }, { "slug": "buymeacoffee-payout-to-journal", "name": "Buy Me a Coffee transactions to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/buymeacoffee-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Turn a Buy Me a Coffee transactions export into month-split journal entries. Nothing leaves your device.", "pages": 1, "launched": "2026-10-06" }, { "slug": "ca-crypto-acb-calculator", "name": "Canada Crypto ACB Calculator — free, private, in your browser", "url": "https://marisstella.app/ca-crypto-acb-calculator/", "category": "Self-hosted business apps", "description": "Free Canadian crypto capital gains calculator. Paste your buys, sales, swaps and staking income as a CSV and it works out the average adjusted cost base (ACB) of each coin…", "pages": 2, "launched": "2026-10-19" }, { "slug": "ca-gst-hst-small-supplier-checker", "name": "GST/HST small supplier checker: do you have to register? Free, private", "url": "https://marisstella.app/ca-gst-hst-small-supplier-checker/", "category": "Back-office money & contracts", "description": "Free Canada GST/HST small supplier checker: enter your last eight calendar quarters of sales to see whether you passed the CAD 30,000 line in one quarter or over four, the date…", "pages": 1, "launched": "2026-10-13" }, { "slug": "ca-meal-rest-break-premium-checker", "name": "California Meal & Rest Break Premium Checker — free, private, in your browser", "url": "https://marisstella.app/ca-meal-rest-break-premium-checker/", "category": "Restaurant, bar & food truck pricing", "description": "Free California meal and rest break premium pay checker for restaurants, retail and any hourly employer. Paste timecards, find late, short and missed meal periods and rest break…", "pages": 2, "launched": "2026-10-12" }, { "slug": "ca-self-employed-tax-set-aside-calculator", "name": "Canada Self-Employed Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/ca-self-employed-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free Canadian self-employed tax calculator: enter revenue and expenses to see CPP, federal tax, a provincial estimate and how much of every invoice to set aside. Runs in your…", "pages": 1, "launched": "2026-10-14" }, { "slug": "caa-record-check", "name": "CAA Record Checker", "url": "https://marisstella.app/caa-record-check/", "category": "CI checks & developer gates", "description": "Enter a hostname to see the CAA record set that governs certificate issuance per RFC 8659, and which CAs may issue. Only public DNS is read; nothing uploaded.", "pages": 3, "launched": "2026-09-24" }, { "slug": "cabinet-refinishing-bid-calculator", "name": "Cabinet Refinishing Bid Calculator", "url": "https://marisstella.app/cabinet-refinishing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a kitchen cabinet refinish from doors, drawer fronts, face frames, hardware, degrease, and a dark-to-light extra coat — then see price per door, price per painted piece, and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "cache-control-check", "name": "Cache-Control Checker", "url": "https://marisstella.app/cache-control-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends one real request to your site, then paste the JSON here for a plain-English report on Vary: * (uncacheable forever), Cache-Control: public…", "pages": 4, "launched": "2026-09-10" }, { "slug": "cafe-drink-margin-calculator", "name": "Cafe drink margin calculator", "url": "https://marisstella.app/cafe-drink-margin-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for coffee shop owners: what each latte, cold brew and drip coffee really earns after beans, milk, cup, card fee and barista time. Margin per drink, profit per…", "pages": 1, "launched": "2026-10-09" }, { "slug": "cake-pricing-calculator", "name": "Cake Pricing Calculator — free, private", "url": "https://marisstella.app/cake-pricing-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free cake pricing calculator for home bakers and cake decorators: ingredients, decoration, hours, delivery, overhead and fees in, a price per cake and per serving out, with…", "pages": 1, "launched": "2026-10-10" }, { "slug": "call-recording-consent-check", "name": "Do you need consent to record this call?", "url": "https://marisstella.app/call-recording-consent-check/", "category": "Compliance checks & evidence records", "description": "Pick the caller's and recipient's US states and get an instant one-party vs. all-party call-recording consent determination, the exact statute cited, and a ready-to-read…", "pages": 3, "launched": "2026-09-17" }, { "slug": "cam-reconciliation-check", "name": "CAM Reconciliation Check", "url": "https://marisstella.app/cam-reconciliation-check/", "category": "Back-office money & contracts", "description": "Free CAM reconciliation calculator for small commercial landlords and tenants. Check area-share math, credits, billed charges, and variance privately in your browser.", "pages": 5, "launched": "2026-08-26" }, { "slug": "campground-site-profit-calculator", "name": "Campground profit calculator: does your park pay? Free, private", "url": "https://marisstella.app/campground-site-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free profit calculator for campgrounds and RV parks: sites, months open, occupancy, nightly rate, booking commission, turnover labour and fixed costs become yearly profit…", "pages": 1, "launched": "2026-10-06" }, { "slug": "camt053-statement-check", "name": "camt.053 Statement Check — free, private, in your browser", "url": "https://marisstella.app/camt053-statement-check/", "category": "Compliance checks & evidence records", "description": "Free camt.053 checker: finds why an ISO 20022 XML bank statement fails to import or does not balance (opening plus entries versus closing, gaps between statements, batch totals…", "pages": 1, "launched": "2026-10-05" }, { "slug": "camt053-to-ofx-converter", "name": "camt.053 / MT940 to OFX, QBO, QIF and Xero CSV — free, private", "url": "https://marisstella.app/camt053-to-ofx-converter/", "category": "Compliance checks & evidence records", "description": "Free camt.053 and MT940 converter: balance-check the statement, then download OFX/QBO for QuickBooks and Quicken, QIF, or a Xero statement CSV, with stable transaction IDs. Runs…", "pages": 1, "launched": "2026-10-05" }, { "slug": "cancel-flow", "name": "Cancel Flow — save-offer cancellation flow for Stripe, self-hosted", "url": "https://marisstella.app/cancel-flow/", "category": "Self-hosted business apps", "description": "Keep subscribers who only needed a nudge. A cancellation flow for Stripe that asks why, offers a pause or a discount matched to the reason, and reports your save rate. Preview it…", "pages": 1, "launched": "2026-10-15" }, { "slug": "candle-batch-cost-calculator", "name": "Candle Batch Cost Calculator — free, private, in your browser", "url": "https://marisstella.app/candle-batch-cost-calculator/", "category": "Creator & solo earner income", "description": "Candle and soap maker cost calculator. Enter wax, fragrance load, vessel and labor to see cost per candle, margin online, at craft fairs and wholesale, the price floor for your…", "pages": 1, "launched": "2026-10-01" }, { "slug": "cannabis-280e-tax-calculator", "name": "Cannabis 280E tax calculator, in your browser", "url": "https://marisstella.app/cannabis-280e-tax-calculator/", "category": "Back-office money & contracts", "description": "Estimate what 280E costs a cannabis business: federal and state tax on gross profit versus real profit, the extra tax, whether you owe tax while losing money, and what moving…", "pages": 2, "launched": "2026-10-12" }, { "slug": "canonical-tag-check", "name": "Canonical Tag Checker", "url": "https://marisstella.app/canonical-tag-check/", "category": "CI checks & developer gates", "description": "Free tool: fetch a URL for real and get a plain-English report on canonical-tag misconfigurations -- conflicting tags, a canonical pointing at a different domain, or a canonical…", "pages": 5, "launched": "2026-09-10" }, { "slug": "capex-budget-prioritizer", "name": "Capex budget prioritizer", "url": "https://marisstella.app/capex-budget-prioritizer/", "category": "Service business pricing & quotes", "description": "Free capital budgeting tool for small businesses: list the equipment, vehicle and software projects you want, enter your budget, and get the set with the highest total net present…", "pages": 1, "launched": "2026-10-09" }, { "slug": "caption-quality-check", "name": "Caption Quality Checker", "url": "https://marisstella.app/caption-quality-check/", "category": "CI checks & developer gates", "description": "Free tool: paste an SRT or WebVTT caption file and check it against commonly-used caption style-guide thresholds -- reading speed (characters per second), line length, lines per…", "pages": 3, "launched": "2026-09-13" }, { "slug": "car-hauler-load-planner", "name": "Car hauler load planner", "url": "https://marisstella.app/car-hauler-load-planner/", "category": "Logistics, freight & cloud cost", "description": "Free car hauler load planner: paste the vehicles on your dispatch board with pickup and drop miles, describe your two-deck trailer, and get the cars to carry, the deck for each…", "pages": 1, "launched": "2026-10-09" }, { "slug": "car-lease-deal-checker", "name": "Car Lease Deal Checker — money factor to APR and lease vs buy", "url": "https://marisstella.app/car-lease-deal-checker/", "category": "Creator & solo earner income", "description": "Free car lease calculator. Turn a money factor into APR, find the money factor hiding in a quoted payment, price dealer markup in dollars, and compare leasing with buying…", "pages": 2, "launched": "2026-10-11" }, { "slug": "car-wash-membership-calculator", "name": "Car Wash Membership Calculator — free, private, in your browser", "url": "https://marisstella.app/car-wash-membership-calculator/", "category": "Service business pricing & quotes", "description": "Car wash membership calculator for owners and managers. Enter your unlimited plan price, cost per wash and how often members wash to see net per member, break-even washes, heavy…", "pages": 1, "launched": "2026-10-01" }, { "slug": "card-bonus-planner", "name": "Card Bonus Planner — schedule sign-up bonuses around your real spending", "url": "https://marisstella.app/card-bonus-planner/", "category": "Creator & solo earner income", "description": "Plan credit card sign-up bonuses: track minimum-spend deadlines, see your 5/24 count and issuer velocity limits, compare net value after the annual fee, and get an application…", "pages": 1, "launched": "2026-10-09" }, { "slug": "card-grading-submission-picker", "name": "Which cards are worth sending to a grader, and which should you sell raw?", "url": "https://marisstella.app/card-grading-submission-picker/", "category": "Marketplace seller tools", "description": "Is it worth grading this card? Paste your cards with your own value at each grade and grade chances and get which to send to a grader, which fee tier, which to sell raw, the…", "pages": 2, "launched": "2026-10-02" }, { "slug": "card-processing-fee-audit", "name": "Card processing fee audit", "url": "https://marisstella.app/card-processing-fee-audit/", "category": "Back-office money & contracts", "description": "Read five numbers off your merchant statement and see how much of your card processing bill is network interchange you cannot negotiate and how much is processor markup you can…", "pages": 4, "launched": "2026-09-06" }, { "slug": "card-surcharge-vs-cash-discount-calculator", "name": "Card Surcharge vs Cash Discount Calculator — free", "url": "https://marisstella.app/card-surcharge-vs-cash-discount-calculator/", "category": "Back-office money & contracts", "description": "Free credit card surcharge vs cash discount calculator for small merchants: see monthly processing cost, the surcharge that recovers it, and how many customers you can lose before…", "pages": 1, "launched": "2026-09-29" }, { "slug": "cargo-audit-triage", "name": "Which cargo audit findings actually matter?", "url": "https://marisstella.app/cargo-audit-triage/", "category": "CI checks & developer gates", "description": "Paste cargo audit --json and your Rust source: see which flagged crates your code actually uses and which are test-only or unreferenced noise. Free cargo audit triage, runs in…", "pages": 2, "launched": "2026-10-13" }, { "slug": "carpet-cleaning-bid-calculator", "name": "Carpet Cleaning Bid Calculator", "url": "https://marisstella.app/carpet-cleaning-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a carpet cleaning job from soil-specific extraction rates: rooms, stairs, pet-urine extra passes, upholstery, furniture moving, and drive time — plus the walk-away number a…", "pages": 4, "launched": "2026-08-26" }, { "slug": "carpet-install-bid-calculator", "name": "Carpet Installation Bid Calculator", "url": "https://marisstella.app/carpet-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a carpet install from floor yards, stairs, stretch-in versus glue-down versus carpet tile, patterned waste, and extras — plus the walk-away price a $2-a-yard special cannot…", "pages": 7, "launched": "2026-08-26" }, { "slug": "cash-balance-plan-calculator", "name": "Cash Balance Plan Calculator — free, private, 2026", "url": "https://marisstella.app/cash-balance-plan-calculator/", "category": "Back-office money & contracts", "description": "Free cash balance plan calculator for self-employed and small-practice owners aged 40+. Estimates a 2026 contribution range by age, stacked with a 401(k) and profit sharing, tax…", "pages": 1, "launched": "2026-09-30" }, { "slug": "cash-flow-risk-forecaster", "name": "Cash flow forecast with late-paying customers: the odds you run short. Free, private", "url": "https://marisstella.app/cash-flow-risk-forecaster/", "category": "Creator & solo earner income", "description": "Free 13-week cash flow forecast that assumes invoices arrive late: paste your invoices and bills, and 2,000 simulated outcomes show the chance you run short, the cushion that…", "pages": 1, "launched": "2026-10-06" }, { "slug": "cash-runway-planner", "name": "Cash Runway Planner", "url": "https://marisstella.app/cash-runway-planner/", "category": "Back-office money & contracts", "description": "Forecast when invoices and recurring bills could create a cash shortfall for your small business, including one-off payments like a quarterly tax bill or an insurance renewal, and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "cat-adjuster-fee-calculator", "name": "CAT Adjuster Fee Schedule & Deployment Profit Calculator", "url": "https://marisstella.app/cat-adjuster-fee-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for independent catastrophe (CAT) claims adjusters: find real net profit for a storm deployment after estimating-software, lodging, per diem, vehicle, and unpaid…", "pages": 4, "launched": "2026-09-11" }, { "slug": "catering-quote-calculator", "name": "What should I charge per guest for this catering job?", "url": "https://marisstella.app/catering-quote-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Paste a catering cost sheet and get the per-guest price that hits your margin, food and labor percentages, the deposit, a guest-count tier table and the break-even guest count…", "pages": 2, "launched": "2026-10-02" }, { "slug": "cbam-cost-estimator", "name": "CBAM cost estimator: what the EU carbon border levy adds to your imports. Free, private", "url": "https://marisstella.app/cbam-cost-estimator/", "category": "Compliance checks & evidence records", "description": "Free CBAM cost estimator for EU importers of steel, aluminium, cement, fertilisers and hydrogen: embedded emissions, free-allocation phase-out 2026 to 2034, certificates needed…", "pages": 1, "launched": "2026-10-13" }, { "slug": "cd-treasury-ladder-planner", "name": "CD and Treasury ladder planner: after-tax yield and rate scenarios", "url": "https://marisstella.app/cd-treasury-ladder-planner/", "category": "Creator & solo earner income", "description": "Free CD and Treasury ladder calculator: build a ladder from the rates you type, see after-tax yield per rung with the state-tax exemption, and compare it with the longest CD or…", "pages": 1, "launched": "2026-10-08" }, { "slug": "cdl-school-payback-calculator", "name": "CDL school payback calculator: is truck driving school worth it? Free, private", "url": "https://marisstella.app/cdl-school-payback-calculator/", "category": "Service business pricing & quotes", "description": "Free CDL school payback calculator: tuition, fees, weeks out of work, weekly miles and pay per mile become the cost to get in, the monthly gain over your current job, months to…", "pages": 1, "launched": "2026-10-07" }, { "slug": "cdn-bandwidth-pricing-calculator", "name": "What will a CDN cost at your GB-per-month bandwidth, and who is cheapest?", "url": "https://marisstella.app/cdn-bandwidth-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly CDN bandwidth (GB delivered) and see what Amazon CloudFront, Google Cloud CDN, Fastly, Bunny CDN and KeyCDN charge, the 12-month spend under your growth rate…", "pages": 2, "launched": "2026-10-03" }, { "slug": "cell-tower-lease-buyout-calculator", "name": "Is a cell tower lease buyout offer fair? Free calculator", "url": "https://marisstella.app/cell-tower-lease-buyout-calculator/", "category": "Creator & solo earner income", "description": "Free cell tower lease buyout calculator: compare a lump-sum offer with the rent you would keep collecting. Present value at your discount rate, the buyer's implied return…", "pages": 1, "launched": "2026-10-08" }, { "slug": "certified-payroll-calculator", "name": "Certified Payroll Calculator", "url": "https://marisstella.app/certified-payroll-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for Davis-Bacon / prevailing-wage certified payroll: checks whether a worker's cash wages plus fringe meet the wage determination, and computes overtime correctly…", "pages": 5, "launched": "2026-09-08" }, { "slug": "change-order-margin-calculator", "name": "Change Order Margin Calculator", "url": "https://marisstella.app/change-order-margin-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Price a construction change order from loaded labor, materials, subs, schedule delay and overhead — and see what your contract's markup cap actually leaves you.", "pages": 5, "launched": "2026-08-26" }, { "slug": "changelog-keeper", "name": "Changelog Keeper — changelog page, feeds and a What's new widget, self-hosted", "url": "https://marisstella.app/changelog-keeper/", "category": "Self-hosted business apps", "description": "Publish product updates on a public changelog page with Atom and JSON feeds and an embeddable What's new bell with an unread badge. Scheduled posts, drafts, Slack webhook. Open…", "pages": 1, "launched": "2026-10-16" }, { "slug": "changepoint-detector", "name": "Changepoint Detector — when did your series change?", "url": "https://marisstella.app/changepoint-detector/", "category": "Research algorithms & ML", "description": "Free changepoint detection for any time series. Paste a CSV and see when the level or volatility changed, with exact PELT segmentation and Bayesian online changepoint…", "pages": 2, "launched": "2026-10-20" }, { "slug": "chargeback-evidence-packet", "name": "Chargeback Evidence Packet Builder", "url": "https://marisstella.app/chargeback-evidence-packet/", "category": "Compliance checks & evidence records", "description": "Build a structured chargeback response packet from your order, delivery, and customer-contact evidence. Free, private, and browser-local.", "pages": 4, "launched": "2026-08-26" }, { "slug": "chargeback-ratio-monitor", "name": "Chargeback Ratio Monitor — free, private, CSV in your browser", "url": "https://marisstella.app/chargeback-ratio-monitor/", "category": "Marketplace seller tools", "description": "Free chargeback ratio monitor: drop in your Stripe payments CSV and see your dispute rate by month, headroom to your warning lines, the trend, and what is driving disputes. Runs…", "pages": 1, "launched": "2026-10-09" }, { "slug": "charitable-deduction-calculator", "name": "Charitable Deduction Calculator — free, 2026", "url": "https://marisstella.app/charitable-deduction-calculator/", "category": "Back-office money & contracts", "description": "Free calculator comparing two 2026 OBBBA charitable-giving paths: the new $1,000/$2,000 above-the-line deduction for non-itemizers vs. itemizing cash gifts after the new…", "pages": 2, "launched": "2026-09-25" }, { "slug": "charity-bunching-planner", "name": "Which years should you bunch your charitable giving? Free planner", "url": "https://marisstella.app/charity-bunching-planner/", "category": "Creator & solo earner income", "description": "Free charity bunching calculator: enter what you give each year and your deductions, and get the exact years to fund a donor-advised fund for the biggest tax saving, compared with…", "pages": 1, "launched": "2026-10-08" }, { "slug": "cheap-meal-plan-optimizer", "name": "Cheapest Meal Plan Optimizer — free, private, in your browser", "url": "https://marisstella.app/cheap-meal-plan-optimizer/", "category": "Back-office money & contracts", "description": "Free cheapest meal plan optimizer. Enter foods with prices and nutrition, set calorie, protein, fat and fibre targets, and get the lowest-cost daily servings plus the cost of each…", "pages": 5, "launched": "2026-10-01" }, { "slug": "child-tax-credit-calculator", "name": "Child Tax Credit Calculator — free 2025/2026 CTC & ACTC estimator", "url": "https://marisstella.app/child-tax-credit-calculator/", "category": "Back-office money & contracts", "description": "Estimate the federal Child Tax Credit, Credit for Other Dependents, and refundable Additional Child Tax Credit, including the income phase-out and filer SSN requirement. Entirely…", "pages": 2, "launched": "2026-09-25" }, { "slug": "childcare-center-break-even-calculator", "name": "Childcare Center Break-Even Calculator — free", "url": "https://marisstella.app/childcare-center-break-even-calculator/", "category": "Service business pricing & quotes", "description": "Free break-even calculator for childcare centers and daycares: enter classrooms, licensing ratios, tuition, wages and rent to see monthly profit, break-even enrollment, the ratio…", "pages": 1, "launched": "2026-10-05" }, { "slug": "childcare-enrollment-mix-optimizer", "name": "Childcare enrollment mix optimizer", "url": "https://marisstella.app/childcare-enrollment-mix-optimizer/", "category": "Service business pricing & quotes", "description": "Free tool for childcare center and daycare owners: enter floor space, ratios, tuition and waiting lists by age group and get the enrolment mix with the highest weekly profit…", "pages": 1, "launched": "2026-10-09" }, { "slug": "childcare-tuition-calculator", "name": "Daycare Tuition Calculator", "url": "https://marisstella.app/childcare-tuition-calculator/", "category": "Service business pricing & quotes", "description": "Free daycare and childcare tuition calculator. Price a classroom from your own child:staff ratio, staffing cost, and overhead, and see what an empty seat actually costs you at…", "pages": 4, "launched": "2026-09-07" }, { "slug": "chimney-sweep-bid-calculator", "name": "Chimney Sweep Bid Calculator", "url": "https://marisstella.app/chimney-sweep-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a chimney sweep from flue type, stories, roof access, and creosote — not a flat house rate. See labor hours, walk-away price, and the margin a neighborhood special actually…", "pages": 4, "launched": "2026-08-26" }, { "slug": "chiropractor-new-patient-roi-calculator", "name": "Chiropractor New Patient ROI Calculator — free", "url": "https://marisstella.app/chiropractor-new-patient-roi-calculator/", "category": "Back-office money & contracts", "description": "Free chiropractor new patient ROI calculator: cost to acquire a patient, patient lifetime value by segment, payback in visits, and the most you can spend per lead. Works for…", "pages": 1, "launched": "2026-10-06" }, { "slug": "christmas-tree-farm-profit-planner", "name": "Is a Christmas tree farm profitable? Free profit and payback planner", "url": "https://marisstella.app/christmas-tree-farm-profit-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free Christmas tree farm profit calculator. Plant blocks each year, wait 7-10 years, and see cash flow, payback, NPV and the price per tree you need to break even. Nothing…", "pages": 1, "launched": "2026-10-07" }, { "slug": "chrome-extension-permission-check", "name": "Chrome Extension Permission Checker", "url": "https://marisstella.app/chrome-extension-permission-check/", "category": "CI checks & developer gates", "description": "Free, browser-local checker: scans your extension's JavaScript/TypeScript source for chrome.* API usage and compares it against manifest.json's declared permissions, so an unused…", "pages": 4, "launched": "2026-09-09" }, { "slug": "churn-radar", "name": "Churn Radar — see who is about to cancel before they do", "url": "https://marisstella.app/churn-radar/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to ChurnZero and Gainsight for small SaaS: learn from your own usage events which accounts are about to cancel, with an honest out-of-time accuracy…", "pages": 1, "launched": "2026-10-16" }, { "slug": "ci-minutes-pricing-calculator", "name": "What will CI cost at your build-minute volume, and who is cheapest?", "url": "https://marisstella.app/ci-minutes-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly build-minute volume and see what GitHub Actions, CircleCI, GitLab, Bitbucket Pipelines and Buildkite charge, the 12-month spend under your growth rate, and the…", "pages": 2, "launched": "2026-10-03" }, { "slug": "ci-test-shard-balancer", "name": "Split your CI tests into evenly timed shards", "url": "https://marisstella.app/ci-test-shard-balancer/", "category": "CI checks & developer gates", "description": "Paste JUnit XML from pytest, Jest, Go, Maven/Gradle or RSpec and get an even split into N CI shards, the slowest-shard time, billed-minute savings, the best shard count, and…", "pages": 3, "launched": "2026-10-03" }, { "slug": "class-price-and-minimum-optimizer", "name": "Class price and minimum optimizer", "url": "https://marisstella.app/class-price-and-minimum-optimizer/", "category": "Creator & solo earner income", "description": "Free class price optimizer for tutoring centers, music schools, studios and workshops: enter past prices and sign-ups, set capacity, minimum to run and costs, and get the per-seat…", "pages": 1, "launched": "2026-10-09" }, { "slug": "claude-code-hooks-security-check", "name": "Claude Code Hooks Security Check", "url": "https://marisstella.app/claude-code-hooks-security-check/", "category": "CI checks & developer gates", "description": "Paste a Claude Code hooks configuration and see which command strings match known-dangerous shapes: a remote download piped straight into a shell, a credential file read and sent…", "pages": 3, "launched": "2026-09-25" }, { "slug": "claude-code-settings-check", "name": "Claude Code Settings Check", "url": "https://marisstella.app/claude-code-settings-check/", "category": "CI checks & developer gates", "description": "Paste a Claude Code settings.json to find hooks that never fire and permission rules that never match: bad matchers, typos, duplicates. Runs in your browser.", "pages": 2, "launched": "2026-09-24" }, { "slug": "claude-code-subagent-check", "name": "Claude Code Subagent Check", "url": "https://marisstella.app/claude-code-subagent-check/", "category": "CI checks & developer gates", "description": "Paste a Claude Code subagent definition and find why it never gets delegated to: bad name, vague description, wrong tools or model. Runs in your browser.", "pages": 2, "launched": "2026-09-24" }, { "slug": "claude-skill-scaffold-generator", "name": "Claude Skill Scaffold Generator", "url": "https://marisstella.app/claude-skill-scaffold-generator/", "category": "CI checks & developer gates", "description": "Describe what a Claude Agent Skill should do and get a starter SKILL.md with valid frontmatter, a folder layout and authoring checks. Runs in your browser.", "pages": 2, "launched": "2026-09-24" }, { "slug": "cleaning-dilution-calculator", "name": "Cleaning Chemical Dilution Cost Calculator", "url": "https://marisstella.app/cleaning-dilution-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Calculate commercial cleaning chemical cost per ready-to-use gallon, bucket, and job from concentrate dilution and supplier price.", "pages": 4, "launched": "2026-08-26" }, { "slug": "clearance-markdown-planner", "name": "Clearance Markdown Planner — free, private, in your browser", "url": "https://marisstella.app/clearance-markdown-planner/", "category": "Marketplace seller tools", "description": "Free clearance markdown planner for retailers and sellers. Enter the units you have left and the weeks you have; it estimates price elasticity from your own sales history and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "clergy-housing-allowance-calculator", "name": "Clergy Housing Allowance Calculator — free, private", "url": "https://marisstella.app/clergy-housing-allowance-calculator/", "category": "Creator & solo earner income", "description": "Free minister housing allowance calculator: find your section 107 exclusion (the least of designated, actual cost and fair rental value), income tax saved, self-employment tax…", "pages": 1, "launched": "2026-10-10" }, { "slug": "client-concentration-risk-analyzer", "name": "How dependent is your revenue on one client?", "url": "https://marisstella.app/client-concentration-risk-analyzer/", "category": "Back-office money & contracts", "description": "Paste an invoice export and see each client's share of revenue, your top-three share, whether dependence is rising, and whether you survive losing your biggest client. Free, runs…", "pages": 2, "launched": "2026-10-02" }, { "slug": "client-profitability-time-analyzer", "name": "Client Profitability Time Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/client-profitability-time-analyzer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free analyzer for freelancers, consultants and agencies: load a time export from Toggl, Clockify, Harvest or a spreadsheet and see each client's effective hourly rate against your…", "pages": 1, "launched": "2026-09-29" }, { "slug": "client-rebooking-predictor", "name": "Client Rebooking Predictor — free, private, in your browser", "url": "https://marisstella.app/client-rebooking-predictor/", "category": "Service business pricing & quotes", "description": "Free lapsed-client report for salons, barbers, groomers, physio, dental and cleaning businesses. Paste your visits (client, date, amount) to see who is overdue and still worth a…", "pages": 1, "launched": "2026-09-30" }, { "slug": "climbing-gym-profit-calculator", "name": "Climbing Gym Profit Calculator — monthly profit, payback and break-even members", "url": "https://marisstella.app/climbing-gym-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for climbing and bouldering gyms. Enter day passes, memberships, youth programs, parties, staff, route setting, rent and the build; it shows monthly profit…", "pages": 2, "launched": "2026-10-12" }, { "slug": "cloud-bucket-exposure-check", "name": "Cloud Bucket Exposure Checker", "url": "https://marisstella.app/cloud-bucket-exposure-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends one real, read-only request to an AWS S3 bucket, a Google Cloud Storage bucket, or an Azure Blob container you name, then paste the JSON here for a…", "pages": 5, "launched": "2026-09-24" }, { "slug": "cloud-egress-calculator", "name": "Cloud Egress Cost Calculator", "url": "https://marisstella.app/cloud-egress-calculator/", "category": "Logistics, freight & cloud cost", "description": "Compare monthly S3-compatible storage, request, and data egress costs for a real workload. Free, private, and runs in your browser.", "pages": 8, "launched": "2026-08-26" }, { "slug": "cloudflare-bill-estimator", "name": "What will your Cloudflare bill be, and what cuts it most?", "url": "https://marisstella.app/cloudflare-bill-estimator/", "category": "CI checks & developer gates", "description": "Estimate a monthly Cloudflare developer-platform bill from your own usage (Workers requests and CPU time, KV reads and writes, R2 storage and operations) at editable list prices…", "pages": 2, "launched": "2026-10-03" }, { "slug": "cloudwatch-logs-cost-advisor", "name": "Why is your CloudWatch Logs bill so high?", "url": "https://marisstella.app/cloudwatch-logs-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your CloudWatch log groups (stored GB, retention, GB ingested per month) and get what each costs, the retention policy to set, dead groups and Infrequent Access candidates…", "pages": 2, "launched": "2026-10-02" }, { "slug": "cnc-machining-quote-calculator", "name": "CNC Machining Quote Calculator — cost per part, setup & lot size", "url": "https://marisstella.app/cnc-machining-quote-calculator/", "category": "Service business pricing & quotes", "description": "Free CNC machining quote calculator for job shops: real cost per part from yield, cycle time, setup and tooling, plus break-even price at lots of 1 to 500.", "pages": 3, "launched": "2026-09-17" }, { "slug": "coast-fire-calculator", "name": "Coast FIRE Calculator — free, private", "url": "https://marisstella.app/coast-fire-calculator/", "category": "Back-office money & contracts", "description": "Free Coast FIRE and Barista FIRE calculator: see the savings you need today to coast to retirement, the age you cross that line, and the part-time income you need while coasting…", "pages": 1, "launched": "2026-10-10" }, { "slug": "cobra-vs-marketplace-calculator", "name": "COBRA or a marketplace plan after a job loss: what each really costs", "url": "https://marisstella.app/cobra-vs-marketplace-calculator/", "category": "Back-office money & contracts", "description": "Enter your COBRA premium and a marketplace quote and see the total cost of each over the months you need coverage, at five levels of medical care, with the break-even point and…", "pages": 2, "launched": "2026-10-04" }, { "slug": "codeowners-shadow-check", "name": "CODEOWNERS Shadow Checker", "url": "https://marisstella.app/codeowners-shadow-check/", "category": "CI checks & developer gates", "description": "Free tool: paste your CODEOWNERS file and your repo's file list to see exactly which earlier, more specific rules a later, broader rule silently overrides -- GitHub's own…", "pages": 3, "launched": "2026-09-11" }, { "slug": "coffee-cart-event-quote-calculator", "name": "Coffee Cart Event Quote Calculator — free, private", "url": "https://marisstella.app/coffee-cart-event-quote-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for mobile coffee cart owners: compare a booking fee, a percentage of sales and a prepaid drink guarantee for an event, with break-even drinks and net per hour…", "pages": 1, "launched": "2026-10-10" }, { "slug": "coffee-roaster-margin-calculator", "name": "Coffee Roaster Margin Calculator — free, private, in your browser", "url": "https://marisstella.app/coffee-roaster-margin-calculator/", "category": "Service business pricing & quotes", "description": "Free coffee roaster pricing calculator. Turn green coffee price and roast loss into cost per roasted pound, see margin by channel (retail, subscription, wholesale), find the…", "pages": 2, "launched": "2026-10-01" }, { "slug": "coi-expiry-gap-checker", "name": "COI tracker and gap checker for subcontractor insurance — free, private", "url": "https://marisstella.app/coi-expiry-gap-checker/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free COI tracker for contractors and property managers: check subcontractor insurance against your contract's limits, endorsements and lead time, find expired and expiring…", "pages": 1, "launched": "2026-10-05" }, { "slug": "collision-shop-drp-profit-calculator", "name": "Is an insurer DRP worth it for my body shop? Free calculator", "url": "https://marisstella.app/collision-shop-drp-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free collision repair DRP calculator: your labor rates, the insurer's rate cut, parts discount and materials cap, repriced jobs and promised volume in; profit with and without the…", "pages": 1, "launched": "2026-10-08" }, { "slug": "commercial-lease-abstract-reader", "name": "Commercial lease abstract in seconds — dates, rent schedule, red flags. Free, private", "url": "https://marisstella.app/commercial-lease-abstract-reader/", "category": "Marketplace seller tools", "description": "Free commercial lease abstract tool: paste a lease and get the key terms, a calendar of renewal-notice and rent-step dates (downloadable .ics), the year-by-year rent schedule and…", "pages": 1, "launched": "2026-10-08" }, { "slug": "commercial-lease-effective-rent-calculator", "name": "Commercial Lease Effective Rent Calculator — free, private, in your browser", "url": "https://marisstella.app/commercial-lease-effective-rent-calculator/", "category": "Back-office money & contracts", "description": "Free commercial lease comparison calculator. Compare up to three offers on net effective rent and all-in cost per square foot after free rent, TI allowance, escalations, NNN costs…", "pages": 1, "launched": "2026-09-30" }, { "slug": "commercial-photo-license-calculator", "name": "Commercial Photography Licensing Quote Calculator", "url": "https://marisstella.app/commercial-photo-license-calculator/", "category": "Service business pricing & quotes", "description": "Price commercial photography usage rights by channel, term, territory, and exclusivity. Free local-first quote worksheet for photographers.", "pages": 5, "launched": "2026-08-26" }, { "slug": "commercial-property-cap-rate-calculator", "name": "Commercial property cap rate calculator. Free, private", "url": "https://marisstella.app/commercial-property-cap-rate-calculator/", "category": "Back-office money & contracts", "description": "Free commercial real estate calculator: enter rent, vacancy and expenses to get NOI, property value at a cap rate, DSCR, cash-on-cash return, break-even occupancy and a cap-rate…", "pages": 1, "launched": "2026-10-13" }, { "slug": "commercial-solar-ppa-lease-buy-calculator", "name": "Commercial solar: buy vs PPA vs lease", "url": "https://marisstella.app/commercial-solar-ppa-lease-buy-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Free calculator for businesses, farms, nonprofits and landlords: compare buying commercial solar, a PPA and a lease on one set of after-tax cash flows. NPV, payback, break-even…", "pages": 1, "launched": "2026-10-09" }, { "slug": "commissary-kitchen-cost-split-calculator", "name": "Commissary Kitchen Cost Split Calculator", "url": "https://marisstella.app/commissary-kitchen-cost-split-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for commissary/shared-kitchen operators: split pooled monthly costs (rent, utilities, trash, cleaning, pest control, insurance) fairly among multiple food-truck…", "pages": 3, "launched": "2026-09-16" }, { "slug": "concrete-bid-calculator", "name": "Concrete Bid Calculator", "url": "https://marisstella.app/concrete-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a concrete driveway, patio, or slab from cubic yards, form footage, finish labor, and access — not a flat price per square foot. See yards to order, price per yard, and the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "concrete-lifting-bid-calculator", "name": "Concrete Lifting Bid Calculator", "url": "https://marisstella.app/concrete-lifting-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a mudjacking or polyjacking job from slab area, void depth, method, access path, extra holes, and joint seal — not a published $4.50-per-square-foot special. See the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "conformal-prediction-intervals", "name": "Conformal Prediction Intervals Calculator — free, private, in your browser", "url": "https://marisstella.app/conformal-prediction-intervals/", "category": "Research algorithms & ML", "description": "Free conformal prediction intervals calculator. Paste a CSV, pick the column to predict and a coverage level, and get distribution-free prediction intervals with a finite-sample…", "pages": 1, "launched": "2026-10-20" }, { "slug": "consent-change-record", "name": "Consent Change Record", "url": "https://marisstella.app/consent-change-record/", "category": "Compliance checks & evidence records", "description": "Compare before-and-after consent browser traces and create a local request and storage change record.", "pages": 4, "launched": "2026-08-26" }, { "slug": "consignment-markdown-planner", "name": "When should a consignment shop mark things down?", "url": "https://marisstella.app/consignment-markdown-planner/", "category": "Back-office money & contracts", "description": "Paste the items in your consignment or resale shop and get the exact best markdown schedule for each, which items to decline at intake, and how much a fixed 30/60-day rule leaves…", "pages": 2, "launched": "2026-10-02" }, { "slug": "construction-delay-claim-calculator", "name": "Construction Delay Claim Calculator — free, private", "url": "https://marisstella.app/construction-delay-claim-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free construction delay claim calculator: sort delay days by cause, see the time extension you earn, the compensable cost with an Eichleay home-office share, and the liquidated…", "pages": 1, "launched": "2026-10-10" }, { "slug": "construction-evidence-log", "name": "Construction Daily Log Evidence Pack", "url": "https://marisstella.app/construction-evidence-log/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free private construction daily log and change order documentation tool for small contractors. Create a dated, reviewable evidence pack in your browser, saved locally so you can…", "pages": 3, "launched": "2026-08-26" }, { "slug": "container-demurrage-detention-calculator", "name": "Demurrage and detention calculator — price a late container before it is late", "url": "https://marisstella.app/container-demurrage-detention-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free calculator for importers and forwarders: what will demurrage and detention cost on your containers? Enter your dates, free days and tiered per-day rates to see the bill, the…", "pages": 1, "launched": "2026-10-08" }, { "slug": "container-load-planner", "name": "Container Load Planner — free, private, in your browser", "url": "https://marisstella.app/container-load-planner/", "category": "Logistics, freight & cloud cost", "description": "Free container load planner for small exporters, Amazon FBA and DTC sellers. Enter cartons or pallets, pick a 20 ft, 40 ft, 40 ft high cube, 53 ft trailer, box truck or pallet…", "pages": 2, "launched": "2026-10-01" }, { "slug": "contract-vs-fte-rate-calculator", "name": "What hourly rate matches your salary offer? Free contract vs. W-2 calculator", "url": "https://marisstella.app/contract-vs-fte-rate-calculator/", "category": "Creator & solo earner income", "description": "Free W-2 to 1099 rate calculator: find the hourly contract rate that matches a salaried offer after self-employment tax, health insurance, unpaid time off, bench time, lost 401(k)…", "pages": 1, "launched": "2026-10-08" }, { "slug": "contractor-bid-readiness", "name": "Contractor Bid Readiness Checklist", "url": "https://marisstella.app/contractor-bid-readiness/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Check a contractor RFP or bid submission for missing documents, owners, and deadline risks. Free, private, and browser-local.", "pages": 4, "launched": "2026-08-26" }, { "slug": "contractor-wip-schedule", "name": "Contractor WIP Schedule — free, private, in your browser", "url": "https://marisstella.app/contractor-wip-schedule/", "category": "Back-office money & contracts", "description": "Free work-in-progress schedule for contractors. Paste your open jobs with contract, estimated cost, cost to date and billings to see percent complete, over- and underbilling…", "pages": 1, "launched": "2026-10-01" }, { "slug": "convenience-store-gas-station-profit-calculator", "name": "Gas station calculator: how many cents a gallon do you keep after card fees? Free, private", "url": "https://marisstella.app/convenience-store-gas-station-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free convenience store and gas station profit calculator: fuel margin after card fees, inside sales mix, labor and rent become monthly profit, break-even gallons, debt coverage…", "pages": 1, "launched": "2026-10-13" }, { "slug": "cookie-security-check", "name": "Cookie Security Checker", "url": "https://marisstella.app/cookie-security-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends one real request to your site, then paste the JSON here for a plain-English report on SameSite=None cookies missing Secure (which current browsers…", "pages": 4, "launched": "2026-09-10" }, { "slug": "cors-misconfig-check", "name": "CORS Misconfiguration Checker", "url": "https://marisstella.app/cors-misconfig-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends real requests with crafted Origin headers to your API, then paste the JSON here for a plain-English report on reflected-origin, null-origin, and…", "pages": 4, "launched": "2026-09-10" }, { "slug": "cost-segregation-study-calculator", "name": "Cost Segregation Calculator — free, private", "url": "https://marisstella.app/cost-segregation-study-calculator/", "category": "Back-office money & contracts", "description": "Free cost segregation study calculator for rental and commercial property owners. Estimates first-year extra depreciation, tax saved at your bracket, fee payback, the recapture…", "pages": 1, "launched": "2026-09-30" }, { "slug": "cottage-food-pricing-calculator", "name": "Cottage Food Pricing Calculator — free, private, in your browser", "url": "https://marisstella.app/cottage-food-pricing-calculator/", "category": "Back-office money & contracts", "description": "Cottage food pricing calculator for home bakers and small food makers. Get the full cost per item with your time, packaging, overhead and unsold goods, the price to charge online…", "pages": 1, "launched": "2026-10-01" }, { "slug": "countertop-bid-calculator", "name": "Quartz & Granite Countertop Bid Calculator", "url": "https://marisstella.app/countertop-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a quartz or granite countertop job from slabs, sink and cooktop cutouts, edge profile, backsplash, and waterfalls — not a published price per finished square foot. See the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "courier-van-route-profit-calculator", "name": "Courier Van Route Profit Calculator — true profit per route, per hour and per stop", "url": "https://marisstella.app/courier-van-route-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for independent delivery van contractors. Enter route pay, stops, packages, miles, fuel, van payment, insurance and tax set-aside; it shows true profit per route…", "pages": 2, "launched": "2026-10-12" }, { "slug": "course-launch-revenue-calculator", "name": "Course Launch Revenue Calculator — free, private, in your browser", "url": "https://marisstella.app/course-launch-revenue-calculator/", "category": "Marketplace seller tools", "description": "Course launch revenue calculator. Enter your email list, conversion rates, price, refunds, platform and processor fees, affiliate commissions and ad spend. See net profit, the…", "pages": 1, "launched": "2026-10-01" }, { "slug": "course-platform-fee-calculator", "name": "Course Platform Fee Calculator — free", "url": "https://marisstella.app/course-platform-fee-calculator/", "category": "Marketplace seller tools", "description": "What you keep per month on each course platform at your price and volume, and where the cheapest one changes. Runs in your browser.", "pages": 1, "launched": "2026-10-05" }, { "slug": "court-reporter-transcript-calculator", "name": "Court Reporter Transcript Pricing Calculator — free, no sign-up", "url": "https://marisstella.app/court-reporter-transcript-calculator/", "category": "Service business pricing & quotes", "description": "Free deposition transcript pricing calculator for freelance court reporters: turn page count, turnaround, travel, copies, and exhibits into an invoice total and an effective…", "pages": 3, "launched": "2026-09-13" }, { "slug": "coverage-drop-check", "name": "Did this PR drop your coverage?", "url": "https://marisstella.app/coverage-drop-check/", "category": "CI checks & developer gates", "description": "Paste two Cobertura or JaCoCo coverage XML reports — baseline vs this PR — and see whether line coverage dropped, and which files got worse. Free, runs in your browser, nothing…", "pages": 4, "launched": "2026-09-07" }, { "slug": "covered-call-wheel-calculator", "name": "Covered call and wheel calculator: rank every strike", "url": "https://marisstella.app/covered-call-wheel-calculator/", "category": "Creator & solo earner income", "description": "Free covered call and cash-secured put calculator: paste option quotes and rank strikes by annualized premium yield, chance of assignment, breakeven and payoff at expiry. Nothing…", "pages": 1, "launched": "2026-10-08" }, { "slug": "cow-calf-breakeven-calculator", "name": "What calf price do you need to break even on a cow?", "url": "https://marisstella.app/cow-calf-breakeven-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free calculator for cattle producers: what a cow costs you a year, what her calf brings in, your breakeven calf price per hundredweight, and how hay price, weaning weight and…", "pages": 2, "launched": "2026-10-03" }, { "slug": "coworking-space-profit-calculator", "name": "Coworking space calculator: will it break even, and when? Free, private", "url": "https://marisstella.app/coworking-space-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free coworking space profit calculator: floor area, offices, desks, memberships, rent and staff become monthly profit, break-even occupancy, the cash reserve for ramp-up, loan…", "pages": 1, "launched": "2026-10-12" }, { "slug": "cra-evidence-desk", "name": "CRA Evidence Desk — free SBOM vs advisory matcher", "url": "https://marisstella.app/cra-evidence-desk/", "category": "Compliance checks & evidence records", "description": "Free Cyber Resilience Act evidence tool: match your CycloneDX or SPDX SBOM against an OSV advisory export, see exactly which components are named, and download a dated record and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "craft-brewery-batch-margin-calculator", "name": "Craft brewery batch margin by channel and fermenter day — free, private", "url": "https://marisstella.app/craft-brewery-batch-margin-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free craft brewery batch margin calculator: cost each beer after yield loss, labour, federal and state excise and overhead, see profit per barrel by channel (taproom, kegs…", "pages": 1, "launched": "2026-10-07" }, { "slug": "craft-fair-booth-calculator", "name": "Craft Fair Booth Calculator — Is This Market Worth Taking?", "url": "https://marisstella.app/craft-fair-booth-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for makers: find what one craft fair, farmers market, or art festival booth has to sell to break even after booth fee, jury fee, mileage, materials, and card fees…", "pages": 4, "launched": "2026-09-10" }, { "slug": "crawl-space-encapsulation-bid-calculator", "name": "Crawl Space Encapsulation Bid Calculator", "url": "https://marisstella.app/crawl-space-encapsulation-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price crawl space encapsulation from floor area, liner-only versus sealed encapsulate, hatch versus belly-crawl versus wet access, and extras — plus the walk-away price a $4 / sq…", "pages": 4, "launched": "2026-08-26" }, { "slug": "crew-dispatch-optimizer", "name": "Crew Dispatch Optimizer — free, private, in your browser", "url": "https://marisstella.app/crew-dispatch-optimizer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free job dispatch and route planner for plumbers, HVAC, electricians, cleaners and other service crews. Paste your jobs and crews to get the cheapest assignment and stop order…", "pages": 1, "launched": "2026-09-30" }, { "slug": "cron-dst-drift-check", "name": "Will your cron job survive daylight saving?", "url": "https://marisstella.app/cron-dst-drift-check/", "category": "CI checks & developer gates", "description": "Paste a cron expression and timezone to see which runs a daylight-saving change skips or doubles, and how UTC-only schedulers drift. Runs in your browser.", "pages": 3, "launched": "2026-09-16" }, { "slug": "cron-heartbeat", "name": "Cron Heartbeat — dead man's switch for cron jobs, self-hosted", "url": "https://marisstella.app/cron-heartbeat/", "category": "Self-hosted business apps", "description": "Know when a cron job silently stops. Paste your crontab to get next runs, the right grace period and a wrapped line that pings a heartbeat monitor you can self-host with zero…", "pages": 1, "launched": "2026-10-08" }, { "slug": "crop-insurance-coverage-calculator", "name": "Is 85% crop insurance worth it over 80%? Free coverage level calculator", "url": "https://marisstella.app/crop-insurance-coverage-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free crop insurance coverage level calculator for farmers: compare 70, 75, 80 and 85 percent RP, RP-HPE or YP using your agent's quoted premiums. See the guarantee, break-even…", "pages": 1, "launched": "2026-10-08" }, { "slug": "crown-molding-bid-calculator", "name": "Crown Molding Bid Calculator", "url": "https://marisstella.app/crown-molding-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a residential crown-molding install from linear feet, corners, paint-grade versus stain-grade, simple cove versus colonial versus built-up, ceiling and height, and extras —…", "pages": 7, "launched": "2026-08-26" }, { "slug": "crypto-cost-basis-calculator", "name": "Crypto Cost Basis Calculator — free, private, in your browser", "url": "https://marisstella.app/crypto-cost-basis-calculator/", "category": "Back-office money & contracts", "description": "Free crypto cost basis calculator. Paste your buys, sales and income as a CSV; it matches every sale to your lots under FIFO, LIFO, HIFO, LOFO or a tax-aware rule, compares the…", "pages": 5, "launched": "2026-10-01" }, { "slug": "csa-share-pricing-calculator", "name": "What should a CSA share cost?", "url": "https://marisstella.app/csa-share-pricing-calculator/", "category": "Back-office money & contracts", "description": "List what goes in your CSA box and see what a member gets at retail, what the season pays you per hour, the price that pays your target wage, break-even shares and a price sweep…", "pages": 2, "launched": "2026-10-02" }, { "slug": "csv-to-sepa-pain001", "name": "CSV to SEPA pain.001 — free, private, in your browser", "url": "https://marisstella.app/csv-to-sepa-pain001/", "category": "Back-office money & contracts", "description": "Free CSV to SEPA converter: turn a spreadsheet of supplier or payroll payments into a pain.001 XML file for your bank's bulk upload. Checks every IBAN and amount first, writes…", "pages": 1, "launched": "2026-10-20" }, { "slug": "csv-to-sepa-pain008", "name": "CSV to SEPA pain.008 direct debit — free, private, in your browser", "url": "https://marisstella.app/csv-to-sepa-pain008/", "category": "Back-office money & contracts", "description": "Free CSV to SEPA direct debit converter: turn a spreadsheet of member or customer collections into a pain.008 XML file for your bank. Checks every IBAN, mandate and your creditor…", "pages": 1, "launched": "2026-10-20" }, { "slug": "csv-to-sql-generator", "name": "CSV to SQL, in your browser", "url": "https://marisstella.app/csv-to-sql-generator/", "category": "CI checks & developer gates", "description": "Convert a CSV to SQL: CREATE TABLE with inferred column types plus batched INSERT statements for PostgreSQL, MySQL, SQLite, SQL Server and BigQuery. Free, runs in your browser…", "pages": 2, "launched": "2026-10-12" }, { "slug": "custom-farm-rate-calculator", "name": "Custom Farm Rate Calculator", "url": "https://marisstella.app/custom-farm-rate-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free calculator for custom farm operators: find the rate to charge per acre for combining, planting, spraying, baling, or tillage work, from your own machine speed, width, fuel…", "pages": 3, "launched": "2026-09-06" }, { "slug": "customer-lifetime-value-predictor", "name": "Customer Lifetime Value Predictor — free, private, in your browser", "url": "https://marisstella.app/customer-lifetime-value-predictor/", "category": "Back-office money & contracts", "description": "Free customer lifetime value predictor for online shops. Upload an order list to get each customer's predicted value, the chance they are still active, at-risk big spenders, what…", "pages": 2, "launched": "2026-09-30" }, { "slug": "cut-list-optimizer", "name": "Cut List Optimizer — compare sheet sizes and board lengths before you buy", "url": "https://marisstella.app/cut-list-optimizer/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Free cut list optimizer for woodworkers and sign shops. Lay out plywood, MDF, or acrylic, compare 4×8 vs 5×5 sheets, and rank 8 ft vs 10 ft vs 12 ft boards before you buy. Nothing…", "pages": 4, "launched": "2026-08-24" }, { "slug": "dac7-seller-reporting-checker", "name": "DAC7 checker: will the platform report your sales to the tax authority? Free, private", "url": "https://marisstella.app/dac7-seller-reporting-checker/", "category": "Compliance checks & evidence records", "description": "Free DAC7 checker for online sellers and hosts: will the platform report your sales or rentals to the tax authority this year? Checks the 30-sales / EUR 2,000 goods exemption…", "pages": 1, "launched": "2026-10-13" }, { "slug": "daily-prep-quantity-optimizer", "name": "Daily prep quantity optimizer", "url": "https://marisstella.app/daily-prep-quantity-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free daily prep quantity optimizer for bakeries, cafes and food trucks: paste past daily sales, mark sell-out days, and get the prep per item that earns the most after waste, with…", "pages": 1, "launched": "2026-10-09" }, { "slug": "databricks-cluster-cost-advisor", "name": "Why is your Databricks bill so high?", "url": "https://marisstella.app/databricks-cluster-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your Databricks clusters (kind, DBUs used, autotermination) and get what each costs, scheduled work running on pricier all-purpose compute, clusters that never terminate and…", "pages": 2, "launched": "2026-10-02" }, { "slug": "datadog-bill-estimator", "name": "What will your Datadog bill be, and what cuts it most?", "url": "https://marisstella.app/datadog-bill-estimator/", "category": "CI checks & developer gates", "description": "Estimate a monthly Datadog bill from your own usage (hosts, containers, custom metrics, logs, APM, synthetics) at editable list prices, and see which changes cut it most, with a…", "pages": 2, "launched": "2026-10-03" }, { "slug": "de-freiberufler-tax-set-aside-calculator", "name": "Germany Freelancer Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/de-freiberufler-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free German freelancer tax calculator (Freiberufler and Gewerbe): enter turnover and expenses to see Einkommensteuer under the 2026 tariff, Soli, Kirchensteuer, Gewerbesteuer and…", "pages": 1, "launched": "2026-10-14" }, { "slug": "deal-keeper", "name": "Deal Keeper — which deals are really at risk, and what will actually close", "url": "https://marisstella.app/deal-keeper/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to the forecasting add-ons of Pipedrive, HubSpot and Clari for small B2B teams: win chances learned from your own closed deals, a backtested…", "pages": 1, "launched": "2026-10-16" }, { "slug": "deck-bid-calculator", "name": "Deck Bid Calculator", "url": "https://marisstella.app/deck-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a residential deck from height, material, railing lineal feet, and stairs — not a flat dollar-per-square-foot. See walk-away price, price per sf, and whether a $28-a-foot…", "pages": 4, "launched": "2026-08-26" }, { "slug": "deck-staining-bid-calculator", "name": "Deck Staining Bid Calculator", "url": "https://marisstella.app/deck-staining-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a deck stain or seal from walking surface, picket-rail lineal feet, stairs, prep, coats, and access — not a published $2.50-per-square-foot special. See the walk-away number…", "pages": 4, "launched": "2026-08-26" }, { "slug": "delivery-app-margin-calculator", "name": "DoorDash fee calculator for restaurants — compare delivery apps on one ticket", "url": "https://marisstella.app/delivery-app-margin-calculator/", "category": "Marketplace seller tools", "description": "Free restaurant delivery fee calculator: put one ticket through dine-in, pickup, DoorDash, Uber Eats, and Grubhub. See net after commission, packaging, and extra labor — plus the…", "pages": 5, "launched": "2026-08-26" }, { "slug": "demand-charge-interval-analyzer", "name": "Demand charge interval analyzer", "url": "https://marisstella.app/demand-charge-interval-analyzer/", "category": "Service business pricing & quotes", "description": "Free tool for businesses with demand charges: paste 15-minute utility interval data and see monthly peaks, demand charges, ratchet effects, and what shaving the peak would save…", "pages": 1, "launched": "2026-10-09" }, { "slug": "demand-forecast-backtester", "name": "Demand Forecast Back-Tester — free, private, in your browser", "url": "https://marisstella.app/demand-forecast-backtester/", "category": "Marketplace seller tools", "description": "Free demand forecasting for small sellers. Upload a sales CSV to get a back-tested forecast per SKU, safety stock and reorder points at your service level, ABC-XYZ classes, and an…", "pages": 1, "launched": "2026-10-18" }, { "slug": "dental-associate-pay-calculator", "name": "Dental Associate Pay Calculator — free, private, in your browser", "url": "https://marisstella.app/dental-associate-pay-calculator/", "category": "Back-office money & contracts", "description": "Free dental associate pay calculator. Enter two offers, percent of production or collections, daily guarantee and lab fee share, to see what each pays at your expected production…", "pages": 1, "launched": "2026-09-30" }, { "slug": "dental-patient-financing-fee-calculator", "name": "Dental patient financing fee calculator", "url": "https://marisstella.app/dental-patient-financing-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for dental and orthodontic practices: third-party patient financing vs an in-house payment plan vs pay-in-full. What you keep per case after merchant fees…", "pages": 1, "launched": "2026-10-09" }, { "slug": "dental-ppo-writeoff-calculator", "name": "Dental PPO Write-Off Calculator", "url": "https://marisstella.app/dental-ppo-writeoff-calculator/", "category": "Back-office money & contracts", "description": "Your fee schedule is not what you collect. Enter one month of production and contractual write-offs by carrier and see the effective reimbursement rate for every plan, which plans…", "pages": 5, "launched": "2026-09-11" }, { "slug": "dependabot-config-check", "name": "Is Dependabot actually watching all of your repo?", "url": "https://marisstella.app/dependabot-config-check/", "category": "CI checks & developer gates", "description": "Paste your dependabot.yml and your repo's file list. Finds ecosystems Dependabot never updates, invalid intervals, duplicate entries, missing groups and cooldown, and writes a…", "pages": 1, "launched": "2026-09-29" }, { "slug": "dependency-confusion-check", "name": "Could a public package be substituted for your internal one?", "url": "https://marisstella.app/dependency-confusion-check/", "category": "CI checks & developer gates", "description": "Paste your requirements.txt, pip.conf, package.json, and .npmrc and find the two configuration shapes behind every 2021 dependency-confusion incident: pip --extra-index-url, and…", "pages": 4, "launched": "2026-09-07" }, { "slug": "dependent-care-fsa-vs-credit-calculator", "name": "Dependent Care FSA vs Child Care Credit — free, private, in your browser", "url": "https://marisstella.app/dependent-care-fsa-vs-credit-calculator/", "category": "Back-office money & contracts", "description": "Free dependent care FSA vs child and dependent care credit calculator. Enter your income, tax rates and care costs to see which saves more and the best split between the two…", "pages": 1, "launched": "2026-09-30" }, { "slug": "deploy-concurrency-check", "name": "Deploy Concurrency Check", "url": "https://marisstella.app/deploy-concurrency-check/", "category": "CI checks & developer gates", "description": "Paste a GitHub Actions workflow and see every way it is allowed to apply an older revision over a newer one: no concurrency group, a group that changes every run…", "pages": 3, "launched": "2026-09-17" }, { "slug": "depop-fee-calculator", "name": "Depop Fee Calculator", "url": "https://marisstella.app/depop-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Depop seller fee calculator for the US and UK schedule (0% selling fee, 3.3%+$0.45 or 2.9%+£0.30 processing on item price + shipping) and the rest-of-world flat 10% schedule…", "pages": 3, "launched": "2026-09-24" }, { "slug": "depreciation-recapture-calculator", "name": "Depreciation Recapture Calculator — free, no sign-up", "url": "https://marisstella.app/depreciation-recapture-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for landlords selling a rental or investment property: estimates depreciation recapture (Section 1250, capped at 25%), remaining capital-gains tax, and Net…", "pages": 4, "launched": "2026-09-17" }, { "slug": "devsec-toolkit", "name": "devsec-toolkit: every DevSecOps check in one free command", "url": "https://marisstella.app/devsec-toolkit/", "category": "CI checks & developer gates", "description": "One zero-dependency command that runs your repository through 23 open-source DevSecOps checks: GitHub Actions injection and poisoning, Docker and Compose, Kubernetes, dependency…", "pages": 1, "launched": "2026-10-16" }, { "slug": "dining-room-table-mix-optimizer", "name": "Dining room table mix optimizer", "url": "https://marisstella.app/dining-room-table-mix-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free restaurant table mix tool: enter your floor area, table sizes and party-size mix, and get the number of 2-tops, 4-tops and 6-tops that seats the most guests, from simulated…", "pages": 1, "launched": "2026-10-09" }, { "slug": "discogs-fee-calculator", "name": "Discogs Fee Calculator", "url": "https://marisstella.app/discogs-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Discogs seller fee calculator: the 9% selling fee on item price plus shipping ($0.10 minimum, $150 maximum), editable payment processing, your payout and profit after postage…", "pages": 3, "launched": "2026-10-19" }, { "slug": "distillery-excise-tax-calculator", "name": "Distillery Excise Tax Calculator — free, private", "url": "https://marisstella.app/distillery-excise-tax-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free federal spirits excise tax calculator for craft distillers: enter bottles and their proof, see proof gallons, the CBMA $2.70 and $13.34 tax, the cost per bottle and pour, and…", "pages": 1, "launched": "2026-10-10" }, { "slug": "distrokid-royalty-to-journal", "name": "DistroKid earnings report to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/distrokid-royalty-to-journal/", "category": "Compliance checks & evidence records", "description": "Free DistroKid to QuickBooks and Xero journal converter: books music earnings by store (streaming, downloads, TikTok and YouTube) and sale month, songwriter royalties withheld as…", "pages": 1, "launched": "2026-10-06" }, { "slug": "dj-gig-profit-calculator", "name": "DJ Gig Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/dj-gig-profit-calculator/", "category": "Service business pricing & quotes", "description": "DJ gig profit calculator for mobile DJs and event entertainers. Enter packages, event hours, setup time and gig costs to see profit per hour worked, the price that hits your…", "pages": 2, "launched": "2026-10-01" }, { "slug": "dmarc-report-reader", "name": "DMARC Report Reader — read rua reports without a SaaS", "url": "https://marisstella.app/dmarc-report-reader/", "category": "CI checks & developer gates", "description": "Drop your DMARC aggregate reports (.xml, .gz or .zip) and see which senders pass SPF and DKIM alignment, which fail and exactly why, and when it is safe to move from p=none to…", "pages": 1, "launched": "2026-10-09" }, { "slug": "dns-configuration-evidence", "name": "DNS Change Evidence — prove what a DNS change actually did", "url": "https://marisstella.app/dns-configuration-evidence/", "category": "Compliance checks & evidence records", "description": "Capture what public resolvers answer for a customer domain, capture again after the change, and get a source-linked report of what changed, what did not, and what could not be…", "pages": 4, "launched": "2026-08-24" }, { "slug": "docker-base-image-eol-check", "name": "Is your Dockerfile's base image still supported?", "url": "https://marisstella.app/docker-base-image-eol-check/", "category": "CI checks & developer gates", "description": "Paste your Dockerfile and find every FROM line whose base image release has passed its own end-of-life date. Free, runs in your browser, nothing uploaded.", "pages": 4, "launched": "2026-09-23" }, { "slug": "docker-base-image-pin-check", "name": "Are your Dockerfile base images pinned to a digest?", "url": "https://marisstella.app/docker-base-image-pin-check/", "category": "CI checks & developer gates", "description": "Paste your Dockerfile and find every FROM line referencing a base image by a mutable tag like node:18 instead of a pinned content digest (@sha256:...). Free, runs in your browser…", "pages": 4, "launched": "2026-09-10" }, { "slug": "docker-build-secrets-check", "name": "Is a secret baked into your Docker image?", "url": "https://marisstella.app/docker-build-secrets-check/", "category": "CI checks & developer gates", "description": "Paste your Dockerfile and find every ENV or ARG instruction whose name looks like a secret, and every COPY/ADD of a credential file like .env or id_rsa into the build. Free, runs…", "pages": 4, "launched": "2026-09-17" }, { "slug": "docker-cache-order-check", "name": "Is your Dockerfile busting its own build cache?", "url": "https://marisstella.app/docker-cache-order-check/", "category": "CI checks & developer gates", "description": "Paste a Dockerfile and see whether its instruction order defeats Docker's layer cache, from late dependency installs to a lone apt-get update. Runs in your browser.", "pages": 3, "launched": "2026-09-17" }, { "slug": "docker-compose-security-check", "name": "What is your docker-compose.yml handing to the host?", "url": "https://marisstella.app/docker-compose-security-check/", "category": "CI checks & developer gates", "description": "Paste your docker-compose.yml and find risky settings: privileged: true, docker.sock mounts, network_mode host, cap_add SYS_ADMIN, databases on 0.0.0.0, literal secrets, :latest…", "pages": 2, "launched": "2026-10-03" }, { "slug": "dog-boarding-daycare-pricing", "name": "Dog Boarding & Daycare Pricing Calculator", "url": "https://marisstella.app/dog-boarding-daycare-pricing/", "category": "Service business pricing & quotes", "description": "Free calculator for independent dog boarding and daycare facility owners: price a reservation from staff time, supplies, overhead, a long-stay discount, and a multi-dog discount…", "pages": 3, "launched": "2026-09-17" }, { "slug": "dog-grooming-day-planner", "name": "What should you charge for that groom, and which dogs should you book?", "url": "https://marisstella.app/dog-grooming-day-planner/", "category": "Back-office money & contracts", "description": "Quote a groom so it earns your target per table hour, then paste the requests on your list and get the exact set of dogs that earns the most in a day. Free, runs in your browser…", "pages": 2, "launched": "2026-10-02" }, { "slug": "dog-grooming-price-calculator", "name": "Which dog grooming classes underpay your hourly rate?", "url": "https://marisstella.app/dog-grooming-price-calculator/", "category": "Service business pricing & quotes", "description": "Price each breed class from its real minutes, drive time, supplies and no-shows, then audit past appointments to see which classes underpay. Your numbers, not market rates. No…", "pages": 2, "launched": "2026-10-03" }, { "slug": "dog-grooming-profit-calculator", "name": "Dog Grooming Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/dog-grooming-profit-calculator/", "category": "Service business pricing & quotes", "description": "Dog grooming profit calculator for groomers and salon owners. Enter services, minutes, supplies and dogs per week to see profit per hour after overhead, the price that hits your…", "pages": 1, "launched": "2026-10-01" }, { "slug": "dog-walking-route-pricing", "name": "Dog Walking & Pet Sitting Rate Calculator", "url": "https://marisstella.app/dog-walking-route-pricing/", "category": "Service business pricing & quotes", "description": "Free calculator for independent dog walkers and pet sitters: price a walk, drop-in, or overnight from time, drive, mileage, extra pets, and overhead, then see your monthly route…", "pages": 4, "launched": "2026-09-06" }, { "slug": "donor-acknowledgment-letter-generator", "name": "Year-end donor acknowledgment letters from a gift list — free, private", "url": "https://marisstella.app/donor-acknowledgment-letter-generator/", "category": "Back-office money & contracts", "description": "Free year-end donation receipt generator for small nonprofits: paste a gift list, get one acknowledgment letter per donor with the IRS $250 and $75 quid pro quo wording, and a…", "pages": 1, "launched": "2026-10-06" }, { "slug": "donor-retention-analyzer", "name": "Donor Retention Analyzer — free, private, in your browser", "url": "https://marisstella.app/donor-retention-analyzer/", "category": "Back-office money & contracts", "description": "Donor retention analyzer for small nonprofits. Paste your gift history to see retention by fiscal year, first-time versus repeat donor retention, and which lapsed (LYBUNT, SYBUNT)…", "pages": 1, "launched": "2026-10-01" }, { "slug": "dotenv-exposure-check", "name": "Dotenv Exposure Checker", "url": "https://marisstella.app/dotenv-exposure-check/", "category": "CI checks & developer gates", "description": "Paste your site's URL to see whether its .env file is publicly reachable. Reports which variable names are declared, never their values. Free, runs from your browser or a CLI…", "pages": 3, "launched": "2026-09-23" }, { "slug": "drip-keeper", "name": "Drip Keeper — self-hosted lifecycle email", "url": "https://marisstella.app/drip-keeper/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to Customer.io, Loops and Userlist: your app posts events, sequences send onboarding, trial and win-back email, and a goal event stops the rest…", "pages": 1, "launched": "2026-10-15" }, { "slug": "driving-instructor-lesson-pricing-calculator", "name": "Driving Instructor Lesson Pricing Calculator — what a lesson really earns, free", "url": "https://marisstella.app/driving-instructor-lesson-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for independent driving instructors: profit per lesson, break-even price, the price that reaches your take-home target and the cost of a block discount, after…", "pages": 1, "launched": "2026-10-01" }, { "slug": "driving-school-profit-calculator", "name": "Driving School Profit Calculator — free, private", "url": "https://marisstella.app/driving-school-profit-calculator/", "category": "Marketplace seller tools", "description": "Free driving school calculator: enter lesson, block-lesson and road-test prices, car minutes, fuel and wear, cancellation rate, rent and instructor pay, and see profit per lesson…", "pages": 1, "launched": "2026-10-11" }, { "slug": "drone-mapping-job-calculator", "name": "Drone Mapping Job Calculator", "url": "https://marisstella.app/drone-mapping-job-calculator/", "category": "Service business pricing & quotes", "description": "Plan and price an aerial mapping sortie: ground sample distance from your sensor and altitude, flight line spacing, image count, airtime, battery swaps, processing hours and the…", "pages": 4, "launched": "2026-09-11" }, { "slug": "dry-cleaner-profit-calculator", "name": "Dry cleaner calculator: how many pieces a month do you need to break even? Free, private", "url": "https://marisstella.app/dry-cleaner-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free dry cleaner profit calculator: pieces, price, supplies, claims, card fees, labor and rent become monthly profit, break-even pieces, the price increase that covers your costs…", "pages": 1, "launched": "2026-10-13" }, { "slug": "dryer-vent-bid-calculator", "name": "Dryer Vent Bid Calculator", "url": "https://marisstella.app/dryer-vent-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a dryer vent cleaning from extra stories, extra feet of duct, extra dryers, a rooftop termination, camera inspection, crushed-flex replacement, and a nest — not a published…", "pages": 4, "launched": "2026-08-26" }, { "slug": "drywall-bid-calculator", "name": "Drywall Bid Calculator", "url": "https://marisstella.app/drywall-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a hang-and-finish drywall job from rooms, waste, openings, ceiling height, and Gypsum Association finish levels 0–5 — not a flat price per square foot. See labor hours…", "pages": 4, "launched": "2026-08-26" }, { "slug": "duct-cleaning-bid-calculator", "name": "Duct Cleaning Bid Calculator", "url": "https://marisstella.app/duct-cleaning-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price an air-duct cleaning job from extra systems, extra vents, extra stories, crawl access, and a coil clean — not a published $99 whole-house special. See the walk-away number…", "pages": 4, "launched": "2026-08-26" }, { "slug": "dumpster-rental-margin-calculator", "name": "Dumpster Rental Margin Calculator", "url": "https://marisstella.app/dumpster-rental-margin-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for independent roll-off dumpster rental operators: price a rental from the included weight allowance, tipping fee, labor, and mileage, then check whether your…", "pages": 4, "launched": "2026-09-06" }, { "slug": "dunning-engine", "name": "Dunning Engine — failed payment recovery for Stripe, self-hosted", "url": "https://marisstella.app/dunning-engine/", "category": "Self-hosted business apps", "description": "Recover failed Stripe subscription payments with decline-code-aware retries and emails you control. Preview the recovery schedule for any decline code, then run the open-source…", "pages": 3, "launched": "2026-10-15" }, { "slug": "dupehound", "name": "Find copy-pasted code, fast", "url": "https://marisstella.app/dupehound/", "category": "CI checks & developer gates", "description": "Drop a project folder and see every copy-pasted block: file, lines and the matching copy. A Rust copy-paste detector compiled to WebAssembly. Nothing is uploaded. Also a CLI that…", "pages": 1, "launched": "2026-10-29" }, { "slug": "duplicate-payment-audit", "name": "Duplicate Payment Audit", "url": "https://marisstella.app/duplicate-payment-audit/", "category": "Back-office money & contracts", "description": "Free private CSV tool for small businesses and bookkeepers to find duplicate or double vendor payments in an accounts-payable export before requesting a refund.", "pages": 5, "launched": "2026-09-07" }, { "slug": "dynamodb-capacity-mode-advisor", "name": "Is your DynamoDB table on the wrong capacity mode?", "url": "https://marisstella.app/dynamodb-capacity-mode-advisor/", "category": "CI checks & developer gates", "description": "Paste a DynamoDB table's consumed read and write capacity from CloudWatch and see what it costs on-demand, provisioned with autoscaling and provisioned at a fixed peak. Free, runs…", "pages": 2, "launched": "2026-10-01" }, { "slug": "eaa-accessibility-act-checker", "name": "European Accessibility Act checker: does the EAA apply to your product or service? Free, private", "url": "https://marisstella.app/eaa-accessibility-act-checker/", "category": "Compliance checks & evidence records", "description": "Free European Accessibility Act checker: pick what you make or sell, your role and your size to see whether Directive (EU) 2019/882 likely applies, whether the microenterprise…", "pages": 1, "launched": "2026-10-13" }, { "slug": "early-pay-discount-picker", "name": "Early pay discount picker", "url": "https://marisstella.app/early-pay-discount-picker/", "category": "Back-office money & contracts", "description": "Free tool for small businesses with several 2/10 net 30 style supplier discounts and not enough cash to take them all: get the exact set of invoices to pay early after your cost…", "pages": 1, "launched": "2026-10-09" }, { "slug": "ebay-fee-calculator", "name": "eBay Fee & Profit Calculator", "url": "https://marisstella.app/ebay-fee-calculator/", "category": "Marketplace seller tools", "description": "Free eBay profit calculator: see what a sale leaves after fees, shipping, returns and cost of goods, plus break-even resale price and what-if comparisons.", "pages": 27, "launched": "2026-08-24" }, { "slug": "ebay-file-exchange-check", "name": "eBay File Exchange Check — free, private, in your browser", "url": "https://marisstella.app/ebay-file-exchange-check/", "category": "Marketplace seller tools", "description": "Catch what breaks an eBay bulk listing upload, with the line number, before you upload. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "ebay-payout-to-journal", "name": "eBay payout report to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/ebay-payout-to-journal/", "category": "Marketplace seller tools", "description": "Free eBay payout to journal converter: proves the transactions add up to the payout, splits item sales, shipping income, sales tax, final value fees, Promoted Listings, store…", "pages": 1, "launched": "2026-10-05" }, { "slug": "ebay-promoted-listings-roi-analyzer", "name": "eBay Promoted Listings ROI Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/ebay-promoted-listings-roi-analyzer/", "category": "Marketplace seller tools", "description": "Free eBay Promoted Listings ROI analyzer: drop in your Seller Hub ad report and see which listings lose money after ad fees and what share of sales the ad must cause to break…", "pages": 1, "launched": "2026-10-07" }, { "slug": "ebay-transaction-report-analyzer", "name": "eBay Transaction Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/ebay-transaction-report-analyzer/", "category": "Marketplace seller tools", "description": "Free eBay profit analyzer: drop in your Seller Hub Transaction report CSV and get a fee waterfall, profit per item, Promoted Listings, shipping-gap and refund findings. Runs in…", "pages": 1, "launched": "2026-09-29" }, { "slug": "ebike-rental-fleet-profit-calculator", "name": "E-Bike Rental Fleet Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/ebike-rental-fleet-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free e-bike rental business calculator: enter your bikes, busy and quiet days, utilization, half-day and full-day prices, staff, rent, batteries and any loan, and see season…", "pages": 2, "launched": "2026-10-12" }, { "slug": "ebs-volume-cost-advisor", "name": "Are your EBS volumes the wrong type?", "url": "https://marisstella.app/ebs-volume-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your EBS volumes (type, size, provisioned and peak IOPS) and get the cheapest volume type that still covers the peak, the aws ec2 modify-volume command, gp2 burst risk and…", "pages": 2, "launched": "2026-10-02" }, { "slug": "economic-nexus-threshold-tracker", "name": "Economic Nexus Threshold Tracker", "url": "https://marisstella.app/economic-nexus-threshold-tracker/", "category": "Compliance checks & evidence records", "description": "Free browser tracker for online and multi-channel sellers: enter trailing-12-month gross sales and transaction count by state, and see which states' economic-nexus…", "pages": 4, "launched": "2026-09-24" }, { "slug": "edi-x12-order-checker", "name": "EDI X12 Order Checker — free, private, in your browser", "url": "https://marisstella.app/edi-x12-order-checker/", "category": "Back-office money & contracts", "description": "Free EDI X12 file checker and reader for suppliers: finds wrong SE/GE/IEA counts and control numbers, UPC and SSCC check-digit errors, invoice totals that do not match the lines…", "pages": 1, "launched": "2026-10-04" }, { "slug": "egress-window-bid-calculator", "name": "Egress Window Bid Calculator", "url": "https://marisstella.app/egress-window-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price an egress window from window count, hopper versus slider versus casement versus fiberglass, retrofit versus wood-cut versus masonry-cut versus poured-cut, plastic versus…", "pages": 7, "launched": "2026-08-25" }, { "slug": "einvoice-preflight", "name": "E-invoice Preflight — catch defects before submission", "url": "https://marisstella.app/einvoice-preflight/", "category": "Compliance checks & evidence records", "description": "Free local e-invoice check: drop a JSON, UBL, CII or Factur-X/ZUGFeRD invoice to catch missing fields, bad totals, VAT and IBAN typos. Nothing is uploaded.", "pages": 61, "launched": "2026-08-24" }, { "slug": "eitc-calculator", "name": "EITC Calculator — free 2025/2026 Earned Income Tax Credit estimator", "url": "https://marisstella.app/eitc-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the federal Earned Income Tax Credit (EITC): the phase-in, plateau, and phase-out by number of qualifying children and filing status, the investment income…", "pages": 2, "launched": "2026-09-25" }, { "slug": "electrical-panel-upgrade-bid-calculator", "name": "Electrical Panel Upgrade Bid Calculator", "url": "https://marisstella.app/electrical-panel-upgrade-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a 100A to 200A electrical panel or service upgrade from feeder feet, circuit landing, AFCI/GFCI, underground vs overhead, grounding, meter socket, and temporary power — not…", "pages": 4, "launched": "2026-08-26" }, { "slug": "email-api-pricing-calculator", "name": "What will transactional email cost at your send volume, and who is cheapest?", "url": "https://marisstella.app/email-api-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly send volume and see what Resend, Postmark, SendGrid, Mailgun, Amazon SES and Brevo charge, the 12-month spend under your growth rate, and the volume where the…", "pages": 2, "launched": "2026-10-03" }, { "slug": "email-auth-check", "name": "Email Authentication Checker (SPF, DKIM, DMARC, BIMI)", "url": "https://marisstella.app/email-auth-check/", "category": "CI checks & developer gates", "description": "Free SPF, DKIM, DMARC and BIMI checker: paste any domain and get a plain-English report on why your email might be going to spam, with the exact DNS record read and what it means…", "pages": 4, "launched": "2026-09-10" }, { "slug": "email-list-csv-check", "name": "Email List CSV Check — free, private, in your browser", "url": "https://marisstella.app/email-list-csv-check/", "category": "Back-office money & contracts", "description": "Free email list CSV checker for Mailchimp, HubSpot, Klaviyo, Brevo and Constant Contact imports: finds invalid and duplicate emails, domain typos like gmial.com, role and…", "pages": 1, "launched": "2026-10-04" }, { "slug": "embroidery-shop-quote-calculator", "name": "How much should you charge for embroidery?", "url": "https://marisstella.app/embroidery-shop-quote-calculator/", "category": "Service business pricing & quotes", "description": "Price an embroidery job from your own machine time and costs: per-piece price that hits your target margin, quantity breaks, stitch-count sensitivity, and whether a…", "pages": 2, "launched": "2026-10-02" }, { "slug": "employee-cost-calculator", "name": "Employee vs. Contractor Cost Calculator", "url": "https://marisstella.app/employee-cost-calculator/", "category": "Back-office money & contracts", "description": "Free calculator comparing the fully-loaded cost of a W-2 employee against a 1099 contractor for the same role — FICA, capped FUTA/SUTA, workers' comp, PTO, benefits, payroll…", "pages": 3, "launched": "2026-09-24" }, { "slug": "employer-payroll-tax-cost-calculator", "name": "Employer payroll tax and true cost of a hire. Free, private", "url": "https://marisstella.app/employer-payroll-tax-cost-calculator/", "category": "Compliance checks & evidence records", "description": "Free employer payroll tax calculator: enter a salary and state to see Social Security, Medicare, FUTA, state unemployment, workers' comp, match and health cost, and the true cost…", "pages": 1, "launched": "2026-10-13" }, { "slug": "employment-contract-checker", "name": "Check a job offer or employment agreement before you sign — free, private", "url": "https://marisstella.app/employment-contract-checker/", "category": "Service business pricing & quotes", "description": "Free employment contract and job offer checker: paste the offer letter or agreement and see the non-compete, invention assignment, signing-bonus repayment, equity buyback…", "pages": 1, "launched": "2026-10-06" }, { "slug": "entry-door-bid-calculator", "name": "Entry Door Bid Calculator", "url": "https://marisstella.app/entry-door-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price an entry-door replacement from sidelights, transom, out-of-square openings, jamb rot, brickmold, storm door, and paint — not a published $1,200-installed steel special. See…", "pages": 4, "launched": "2026-08-26" }, { "slug": "env-example-drift-check", "name": "Does your .env.example still match what the code actually reads?", "url": "https://marisstella.app/env-example-drift-check/", "category": "CI checks & developer gates", "description": "Paste your .env.example and your source code and see every environment variable the code reads (process.env, os.getenv, os.environ, ENV[], System.getenv) that the example file…", "pages": 4, "launched": "2026-09-09" }, { "slug": "epk-generator", "name": "Build a free electronic press kit (EPK) in minutes", "url": "https://marisstella.app/epk-generator/", "category": "Creator & solo earner income", "description": "Build a professional electronic press kit (EPK) for your band or artist project in minutes — bio, streaming links, tour dates, press quotes, and photo. Free, no signup, runs…", "pages": 4, "launched": "2026-09-11" }, { "slug": "epoxy-garage-floor-bid-calculator", "name": "Epoxy Garage Floor Bid Calculator", "url": "https://marisstella.app/epoxy-garage-floor-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price an epoxy or polyaspartic garage floor from grind hours, flake load, waste, cracks, and travel — not a $4/sq ft special. See kit cost, walk-away price, and whether a proposed…", "pages": 5, "launched": "2026-08-26" }, { "slug": "equipment-auction-buyer-premium-calculator", "name": "Equipment Auction Buyer's Premium Calculator — free, no sign-up", "url": "https://marisstella.app/equipment-auction-buyer-premium-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free calculator for farm and heavy-equipment auction bidders: turns a hammer price into the true out-the-door total, including a capped buyer's premium, online-bidding premium…", "pages": 3, "launched": "2026-09-17" }, { "slug": "equipment-lease-buyout-calculator", "name": "Equipment lease buyout calculator", "url": "https://marisstella.app/equipment-lease-buyout-calculator/", "category": "Back-office money & contracts", "description": "Compare the true monthly cost of buying out an equipment lease against returning it and replacing it, using fair market value and remaining useful life. Free, private, runs in…", "pages": 5, "launched": "2026-09-06" }, { "slug": "equipment-lease-vs-buy-calculator", "name": "Equipment Lease vs Buy Calculator", "url": "https://marisstella.app/equipment-lease-vs-buy-calculator/", "category": "Back-office money & contracts", "description": "Should your business lease or buy the equipment? Compare the after-tax present-value cost of a loan purchase (with Section 179, bonus or MACRS depreciation and resale value)…", "pages": 1, "launched": "2026-10-12" }, { "slug": "equipment-rental-break-even", "name": "Equipment Rental Break-Even Calculator", "url": "https://marisstella.app/equipment-rental-break-even/", "category": "Back-office money & contracts", "description": "Free private equipment rental break-even calculator. Include ownership, delivery, cleaning, damage reserve, and utilization costs before quoting a booking.", "pages": 4, "launched": "2026-08-26" }, { "slug": "era-835-underpayment-finder", "name": "835 ERA Underpayment Finder — free, private, in your browser", "url": "https://marisstella.app/era-835-underpayment-finder/", "category": "Back-office money & contracts", "description": "Free tool for medical and dental practices: drop in an X12 835 remittance file and see which service lines paid below your contract rates, which claims were denied and why, and…", "pages": 2, "launched": "2026-10-04" }, { "slug": "error-keeper", "name": "Error Keeper — know when your app breaks, on your own server", "url": "https://marisstella.app/error-keeper/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to Sentry and Rollbar for small teams: groups the same bug together, alerts on new errors, regressions and spikes, one Node process and one JSON…", "pages": 2, "launched": "2026-10-16" }, { "slug": "error-tracking-pricing-calculator", "name": "What will error tracking cost at your event volume, and who is cheapest?", "url": "https://marisstella.app/error-tracking-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly event volume and see what Sentry, Rollbar, Bugsnag, Honeybadger and GlitchTip charge, the 12-month spend under your growth rate, and the volume where the…", "pages": 2, "launched": "2026-10-03" }, { "slug": "escape-room-pricing-capacity-planner", "name": "What should my escape room charge, and how full must it be? Free planner", "url": "https://marisstella.app/escape-room-pricing-capacity-planner/", "category": "Service business pricing & quotes", "description": "Free escape room pricing calculator: rooms, hours, game and reset length, price per player, occupancy and costs in; monthly profit, break-even occupancy, best price per player and…", "pages": 1, "launched": "2026-10-08" }, { "slug": "espp-tax-calculator", "name": "ESPP Tax Calculator — free, private, in your browser", "url": "https://marisstella.app/espp-tax-calculator/", "category": "Back-office money & contracts", "description": "Free ESPP tax calculator. Enter your offering and purchase prices, discount and lookback to see the after-tax profit of selling at purchase, after a year, or at a qualifying date…", "pages": 1, "launched": "2026-09-30" }, { "slug": "estate-sale-net-proceeds-calculator", "name": "Estate Sale Net Proceeds Calculator", "url": "https://marisstella.app/estate-sale-net-proceeds-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for estate sale commission quotes. Enter a company's tiered commission rates, setup fee, card-processing fee, and haul-away fee against your estimated sale total…", "pages": 3, "launched": "2026-09-17" }, { "slug": "estate-tax-exemption-calculator", "name": "Estate Tax Exemption Calculator — free, 2026", "url": "https://marisstella.app/estate-tax-exemption-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the 2026 OBBBA federal estate, gift, and GST tax exclusion -- $15,000,000 per person, up to $30,000,000 married with portability. Projects taxable estate and…", "pages": 2, "launched": "2026-09-25" }, { "slug": "esthetician-studio-profit-calculator", "name": "Esthetician Studio Profit Calculator — free, private", "url": "https://marisstella.app/esthetician-studio-profit-calculator/", "category": "Marketplace seller tools", "description": "Free esthetician studio calculator: enter facial, waxing and peel prices, chair minutes, supplies, no-show rate, rent and commission, and see profit per treatment and per chair…", "pages": 1, "launched": "2026-10-11" }, { "slug": "estimate-maker", "name": "Estimate Maker — free quote generator, no signup", "url": "https://marisstella.app/estimate-maker/", "category": "Creator & solo earner income", "description": "Free estimate and quote generator: good-better-best options, optional add-ons, tax, deposit, valid-until date, print to PDF, win-rate and follow-up tracking, one-click convert to…", "pages": 2, "launched": "2026-10-07" }, { "slug": "estimated-tax-penalty-calculator", "name": "Estimated Tax Penalty Calculator — Form 2210 underpayment, free", "url": "https://marisstella.app/estimated-tax-penalty-calculator/", "category": "Back-office money & contracts", "description": "Free estimated tax penalty calculator: see your IRS Form 2210 underpayment penalty installment by installment, check the 90% and prior-year safe harbors, and get a catch-up plan…", "pages": 1, "launched": "2026-09-29" }, { "slug": "etsy-ads-roi-analyzer", "name": "Etsy Ads ROI Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/etsy-ads-roi-analyzer/", "category": "Marketplace seller tools", "description": "Free Etsy Ads ROI analyzer: drop in your Shop Manager ad report and see which listings lose money after ad spend and what share of sales the ad must cause to break even. Runs in…", "pages": 1, "launched": "2026-10-07" }, { "slug": "etsy-listing-csv-check", "name": "Etsy Listing CSV Check — free, private, in your browser", "url": "https://marisstella.app/etsy-listing-csv-check/", "category": "Marketplace seller tools", "description": "Free Etsy bulk listing CSV checker: finds titles over 140 characters, more than 13 tags, tags over 20 characters, bad prices and currency codes, quantities over 999, broken image…", "pages": 1, "launched": "2026-10-04" }, { "slug": "etsy-profit-calculator", "name": "Etsy Profit Calculator", "url": "https://marisstella.app/etsy-profit-calculator/", "category": "Marketplace seller tools", "description": "Free Etsy profit calculator: see what an order leaves after listing, transaction, payment, ad and shipping fees, then test Plus, Offsite Ads and sale pricing.", "pages": 14, "launched": "2026-08-24" }, { "slug": "etsy-statement-profit-analyzer", "name": "Etsy Statement Profit Analyzer — free, private, CSVs in your browser", "url": "https://marisstella.app/etsy-statement-profit-analyzer/", "category": "Marketplace seller tools", "description": "Free Etsy profit analyzer: drop in your Payment Account statement and Sold Order Items CSV and get a fee waterfall, profit per listing, Offsite Ads and refund findings. Runs in…", "pages": 1, "launched": "2026-09-29" }, { "slug": "etsy-statement-to-journal", "name": "Etsy statement to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/etsy-statement-to-journal/", "category": "Marketplace seller tools", "description": "Free Etsy statement to journal converter: checks every row, books gross sales, listing and transaction fees, ads, shipping labels, refunds and bank deposits separately by month…", "pages": 1, "launched": "2026-10-05" }, { "slug": "eu-ai-act-risk-checker", "name": "EU AI Act risk checker: is your AI system high-risk? Free, private", "url": "https://marisstella.app/eu-ai-act-risk-checker/", "category": "Compliance checks & evidence records", "description": "Free EU AI Act risk checker: tick what your AI system does and your role to see whether it is prohibited, high-risk, or only has transparency duties under Regulation (EU)…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-bank-statement-reader", "name": "EU Bank Statement Reader — free, private, in your browser", "url": "https://marisstella.app/eu-bank-statement-reader/", "category": "Back-office money & contracts", "description": "Free camt.053 and MT940 bank statement reader: see balances and entries as a table, check that opening balance plus entries equals the closing balance, catch duplicates and gaps…", "pages": 1, "launched": "2026-10-04" }, { "slug": "eu-battery-regulation-checker", "name": "EU Battery Regulation checker: which duties apply to your battery and by when? Free, private", "url": "https://marisstella.app/eu-battery-regulation-checker/", "category": "Compliance checks & evidence records", "description": "Free EU Batteries Regulation (2023/1542) checker for makers, importers and online sellers: which duties reach your battery, when each applies (label, removability, QR code…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-csrd-scope-checker", "name": "CSRD scope checker: original vs Omnibus thresholds. Free, private", "url": "https://marisstella.app/eu-csrd-scope-checker/", "category": "Compliance checks & evidence records", "description": "Free EU CSRD scope checker: are you in mandatory sustainability reporting under the original CSRD and under the Omnibus thresholds (1,000 employees and EUR 450M turnover), from…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-data-act-checker", "name": "EU Data Act checker: does the Data Act apply to your connected product or cloud service? Free, private", "url": "https://marisstella.app/eu-data-act-checker/", "category": "Compliance checks & evidence records", "description": "Free EU Data Act checker: pick your role and size to see whether Regulation (EU) 2023/2854 likely applies, whether the micro and small enterprise exemption covers you, the Article…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-dora-readiness-checker", "name": "EU DORA checker: in scope?, what is missing, when is the incident report due. Free, private", "url": "https://marisstella.app/eu-dora-readiness-checker/", "category": "Compliance checks & evidence records", "description": "Free EU DORA checker for financial entities and the software vendors that sell to them: whether Regulation (EU) 2022/2554 reaches you, which duty areas and Article 30 contract…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-dsa-obligations-checker", "name": "DSA obligations checker: which Articles apply to your platform. Free, private", "url": "https://marisstella.app/eu-dsa-obligations-checker/", "category": "Compliance checks & evidence records", "description": "Free EU Digital Services Act checker: enter your service type, size and EU users to get the exact list of DSA duties that apply (notice and action, complaints, marketplace trader…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-einvoicing-mandate-checker", "name": "EU e-invoicing mandate checker: your receive and issue dates by country. Free, private", "url": "https://marisstella.app/eu-einvoicing-mandate-checker/", "category": "Compliance checks & evidence records", "description": "Free EU e-invoicing mandate checker: when your business must receive and issue structured e-invoices in Germany, France, Belgium, Poland, Italy, Croatia, Greece or Spain, in what…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-espr-readiness-checker", "name": "EU ESPR checker: unsold-clothes destruction ban, disclosure table, Digital Product Passport. Free, private", "url": "https://marisstella.app/eu-espr-readiness-checker/", "category": "Compliance checks & evidence records", "description": "Free EU ESPR checker for brands, importers and retailers: whether the ban on destroying unsold apparel and footwear reaches you, a draft of the annual unsold-goods disclosure…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-green-claims-checker", "name": "EU green claims checker: is your eco-friendly claim banned from 27 September 2026? Free, private", "url": "https://marisstella.app/eu-green-claims-checker/", "category": "Compliance checks & evidence records", "description": "Tick the claims you use; get the banned and conditional ones with the rule and a safer wording.", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-green-claims-copy-scanner", "name": "EU green claims checker: is your eco-friendly copy now illegal? Free, private", "url": "https://marisstella.app/eu-green-claims-copy-scanner/", "category": "Compliance checks & evidence records", "description": "Free greenwashing scanner for product pages, ads and packaging text under the EU Empowering Consumers Directive (2024/825), in force since 27 September 2026: flags carbon-neutral…", "pages": 1, "launched": "2026-10-13" }, { "slug": "eu-packaging-regulation-checker", "name": "EU packaging regulation (PPWR) checker: which duties apply to your packaging and by when? 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Free, private", "url": "https://marisstella.app/eudr-scope-checker/", "category": "Compliance checks & evidence records", "description": "Free EU Deforestation Regulation (EUDR) checker: tick your role, size and commodities to see whether Regulation (EU) 2023/1115 covers you, your duties with the Articles, and your…", "pages": 1, "launched": "2026-10-13" }, { "slug": "ev-charger-bid-calculator", "name": "EV Charger Installation Bid Calculator", "url": "https://marisstella.app/ev-charger-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a residential Level 2 EV charger install from the circuit, the run, the trench, and the panel work — not a flat hang fee. 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Paste your guest list, say who sits together and who must be kept apart, and it assigns every guest to a table with…", "pages": 8, "launched": "2026-10-01" }, { "slug": "excess-business-loss-calculator", "name": "Excess Business Loss Calculator — free, 2025-2026", "url": "https://marisstella.app/excess-business-loss-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the IRC 461(l) excess business loss limitation, now permanent under OBBBA — computes how much of a pass-through owner's net business loss is deductible this…", "pages": 2, "launched": "2026-09-25" }, { "slug": "exempt-salary-threshold-checker", "name": "Exempt Salary Threshold Checker — free, 2026", "url": "https://marisstella.app/exempt-salary-threshold-checker/", "category": "Back-office money & contracts", "description": "Free calculator for the 2026 FLSA white-collar overtime-exemption salary threshold — checks a weekly salary against the federal $684/week figure and the higher state threshold in…", "pages": 2, "launched": "2026-09-25" }, { "slug": "exemption-certificate-audit-check", "name": "Which of your tax-exempt sales have no certificate? 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Nothing leaves your device.", "pages": 1, "launched": "2026-10-06" }, { "slug": "fix-and-flip-deal-analyzer", "name": "Fix and Flip Deal Analyzer — free, private, in your browser", "url": "https://marisstella.app/fix-and-flip-deal-analyzer/", "category": "Back-office money & contracts", "description": "Free fix and flip calculator for house flippers. 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Free, runs entirely…", "pages": 4, "launched": "2026-09-07" }, { "slug": "flat-roof-bid-calculator", "name": "Flat Roof Bid Calculator", "url": "https://marisstella.app/flat-roof-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a low-slope TPO, EPDM, PVC, or modified-bitumen roof from the membrane squares a per-square special cannot see, the tear-off, the insulation, and the parapet — plus…", "pages": 4, "launched": "2026-08-26" }, { "slug": "fleet-ev-vs-diesel-tco-calculator", "name": "Is an electric fleet cheaper than diesel? Free TCO calculator", "url": "https://marisstella.app/fleet-ev-vs-diesel-tco-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free fleet EV vs diesel cost calculator: purchase, chargers, energy, demand charges, maintenance, insurance and resale in; year-by-year cost, payback, break-even fuel price and…", "pages": 1, "launched": "2026-10-08" }, { "slug": "fleet-repair-or-replace-planner", "name": "Repair or replace your work truck? — free planner, no sign-up", "url": "https://marisstella.app/fleet-repair-or-replace-planner/", "category": "Back-office money & contracts", "description": "Free browser planner for trade and service fleets: cost out repair-versus-replace for every van, truck and machine including the downtime days most owners leave out, then rank…", "pages": 5, "launched": "2026-09-12" }, { "slug": "flooring-bid-calculator", "name": "Flooring Bid Calculator", "url": "https://marisstella.app/flooring-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a flooring install from waste, tear-out, and stairs — not a flat dollar per square foot. See purchased material, kitchen tile demo hours, tread labor, and the walk-away…", "pages": 4, "launched": "2026-08-26" }, { "slug": "flsa-regular-rate-overtime-audit", "name": "FLSA Regular-Rate Overtime Audit — free, private, in your browser", "url": "https://marisstella.app/flsa-regular-rate-overtime-audit/", "category": "Restaurant, bar & food truck pricing", "description": "Free FLSA regular rate of pay and overtime audit for restaurants, retailers, staffing agencies and bookkeepers. Paste payroll rows, see the regular rate with bonuses and shift…", "pages": 2, "launched": "2026-10-12" }, { "slug": "food-truck-event-margin-calculator", "name": "Food Truck Event & Catering Margin Calculator", "url": "https://marisstella.app/food-truck-event-margin-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for independent food truck and trailer operators: find the real price for one private event, catering, or festival booking after commissary prep, travel, staff…", "pages": 4, "launched": "2026-09-07" }, { "slug": "food-truck-prep-mix-optimizer", "name": "Food truck prep mix optimizer", "url": "https://marisstella.app/food-truck-prep-mix-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free food truck prep mix optimizer: enter prices, food costs, prep minutes, grill time and ingredient cash per menu item to find how many portions earn the most, and what an extra…", "pages": 1, "launched": "2026-10-09" }, { "slug": "forestry-mulching-bid-calculator", "name": "Forestry Mulching Bid Calculator", "url": "https://marisstella.app/forestry-mulching-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a forestry mulching or land clearing job from acres per machine-hour instead of a flat per-acre guess: head width, advance speed, passes, terrain, fuel, carbide tooth wear…", "pages": 4, "launched": "2026-09-11" }, { "slug": "form-2290-hvut-calculator", "name": "Form 2290 HVUT Calculator — free, private", "url": "https://marisstella.app/form-2290-hvut-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free Form 2290 heavy highway vehicle use tax calculator for owner-operators and small fleets: tax by weight category, partial-year proration by first-use month, logging and…", "pages": 1, "launched": "2026-10-10" }, { "slug": "form-5500-late-filing-calculator", "name": "Form 5500 Late Filing Calculator — free, private, in your browser", "url": "https://marisstella.app/form-5500-late-filing-calculator/", "category": "Back-office money & contracts", "description": "Free Form 5500 late filing calculator for 401(k) and retirement-plan sponsors: the due date with weekend rollover and the Form 5558 extension, days late, and the DOL DFVC…", "pages": 2, "launched": "2026-10-04" }, { "slug": "form-inbox", "name": "Form Inbox — a Formspree alternative you host yourself", "url": "https://marisstella.app/form-inbox/", "category": "Self-hosted business apps", "description": "Point any HTML form at your own server: spam scoring with visible reasons, an inbox, CSV export and email or Slack notifications. Open source, MIT, no per-submission fee. Test the…", "pages": 1, "launched": "2026-10-15" }, { "slug": "foundation-repair-bid-calculator", "name": "Foundation Repair Bid Calculator", "url": "https://marisstella.app/foundation-repair-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price helical or push piers and wall stabilization from pier count, depth, interior versus exterior access, engineering and straps. See your walk-away number.", "pages": 4, "launched": "2026-08-26" }, { "slug": "fractional-executive-rate-calculator", "name": "Fractional Executive Rate Calculator — free", "url": "https://marisstella.app/fractional-executive-rate-calculator/", "category": "Back-office money & contracts", "description": "Free fractional executive rate calculator: convert a full-time salary into the day rate, hourly rate and monthly retainer that cover unsold days, benefits and payroll tax, then…", "pages": 1, "launched": "2026-10-06" }, { "slug": "franchise-item-19-reality-check", "name": "Franchise Item 19 Reality Check — free, private, in your browser", "url": "https://marisstella.app/franchise-item-19-reality-check/", "category": "Restaurant, bar & food truck pricing", "description": "Free franchise Item 19 reality check. Enter the earnings tiers from a franchise disclosure document and see owner earnings after royalty and ad fund, payback, the average versus…", "pages": 2, "launched": "2026-10-12" }, { "slug": "franchise-unit-economics-calculator", "name": "Will this franchise pay? Free unit economics calculator", "url": "https://marisstella.app/franchise-unit-economics-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free franchise calculator: fee, build-out, loan, sales ramp, costs and royalties in; payback, IRR, break-even sales, the cash cushion you need and whether the brand beats going…", "pages": 1, "launched": "2026-10-08" }, { "slug": "free-shipping-threshold-optimizer", "name": "What should your free shipping minimum be?", "url": "https://marisstella.app/free-shipping-threshold-optimizer/", "category": "Marketplace seller tools", "description": "Paste your past orders and see what each free-shipping minimum would earn, how many buyers it must win back to pay for the shipping you give away, and the threshold that loses…", "pages": 2, "launched": "2026-10-02" }, { "slug": "freelance-contract-checker", "name": "Check a freelance contract before you sign it — free, private", "url": "https://marisstella.app/freelance-contract-checker/", "category": "Service business pricing & quotes", "description": "Free freelance contract checker: paste the client agreement or statement of work and see the red flags before you sign, such as net 60 payment, unlimited revisions, IP assigned…", "pages": 1, "launched": "2026-10-06" }, { "slug": "freelance-contract-maker", "name": "Freelance Contract Maker — free service agreement generator, no signup", "url": "https://marisstella.app/freelance-contract-maker/", "category": "Creator & solo earner income", "description": "Free freelance contract generator: describe the project, pick fixed, hourly or retainer, set deposit, revisions, ownership, kill fee and late fee, and get a plain-language service…", "pages": 1, "launched": "2026-10-07" }, { "slug": "freelance-dashboard", "name": "Freelance Dashboard — what is owed, what is unbilled, what to do next", "url": "https://marisstella.app/freelance-dashboard/", "category": "Creator & solo earner income", "description": "Free freelancer dashboard that runs in your browser: see overdue invoices, unbilled hours, your estimate pipeline, year-to-date profit and tax set-aside, plus a ranked list of…", "pages": 1, "launched": "2026-10-07" }, { "slug": "freelance-editor-quote-calculator", "name": "Editing quote calculator: price a proofread, copyedit or developmental edit. Free, private", "url": "https://marisstella.app/freelance-editor-quote-calculator/", "category": "Creator & solo earner income", "description": "Free quote calculator for freelance editors and proofreaders: word count, level of edit and your hourly target become a flat fee, a per-word rate, the days the job needs and what…", "pages": 1, "launched": "2026-10-06" }, { "slug": "freelance-lead-tracker", "name": "Freelance Lead Tracker — free pipeline and follow-up reminders, no signup", "url": "https://marisstella.app/freelance-lead-tracker/", "category": "Compliance checks & evidence records", "description": "Free freelance lead tracker: a simple pipeline from new lead to won, who to follow up today, a weighted income forecast, win rate by lead source and a one-click hand-off into a…", "pages": 1, "launched": "2026-10-07" }, { "slug": "freelance-platform-fee-calculator", "name": "Upwork vs. Fiverr Fee Calculator", "url": "https://marisstella.app/freelance-platform-fee-calculator/", "category": "Marketplace seller tools", "description": "Free calculator comparing Upwork and Fiverr net payout for the same job price, after platform fees, withdrawal fees, and a tax reserve. Solve for the price to charge on either…", "pages": 5, "launched": "2026-09-23" }, { "slug": "freelance-project-picker", "name": "Which freelance projects should you take?", "url": "https://marisstella.app/freelance-project-picker/", "category": "Service business pricing & quotes", "description": "Paste your weekly hours and the project offers on the table and get the exact set to accept for the highest income, with the fee each declined project would need to earn its…", "pages": 2, "launched": "2026-10-02" }, { "slug": "freelance-proposal-maker", "name": "Freelance Proposal Maker — free proposal generator, no signup", "url": "https://marisstella.app/freelance-proposal-maker/", "category": "Service business pricing & quotes", "description": "Free freelance proposal generator: state the client's problem, list deliverables, set a dated timeline and offer up to three priced options with deposits and an expiry date…", "pages": 1, "launched": "2026-10-07" }, { "slug": "freelance-rate-increase-calculator", "name": "Freelance Rate Increase Calculator — free, private, in your browser", "url": "https://marisstella.app/freelance-rate-increase-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Freelance rate increase calculator. List your clients, hours and rates, say how likely each is to leave, and see how many clients you can lose after a raise and still earn the…", "pages": 1, "launched": "2026-10-01" }, { "slug": "freelance-retainer-calculator", "name": "Freelance Retainer Pricing Calculator", "url": "https://marisstella.app/freelance-retainer-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Price a freelance retainer from capacity and costs, then see whether it still beats hourly when the client uses half the block, the full block, or more. Free and private in your…", "pages": 9, "launched": "2026-08-25" }, { "slug": "freelance-retainer-vs-hourly-calculator", "name": "Freelance Retainer vs Hourly Calculator — free, private, in your browser", "url": "https://marisstella.app/freelance-retainer-vs-hourly-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Retainer vs hourly calculator for freelancers, consultants and small agencies. Paste your time log to see your effective hourly rate under a monthly retainer, break-even hours…", "pages": 1, "launched": "2026-10-01" }, { "slug": "freelance-writer-rate-calculator", "name": "Freelance Writer Rate Calculator — per-word vs. flat fee, free", "url": "https://marisstella.app/freelance-writer-rate-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for freelance writers, copywriters, and ghostwriters comparing a per-word rate against a flat project fee for the same job -- computing the real effective hourly…", "pages": 2, "launched": "2026-09-25" }, { "slug": "freelancer-schedule-c-categorizer", "name": "Freelancer Schedule C Categorizer — free, private, in your browser", "url": "https://marisstella.app/freelancer-schedule-c-categorizer/", "category": "Back-office money & contracts", "description": "Free tool for freelancers and sole proprietors: drop in your bank or card CSV and get income and expenses sorted into Schedule C lines, with estimated tax, equipment, health…", "pages": 1, "launched": "2026-09-29" }, { "slug": "freelancer-tax-pack", "name": "Freelancer Tax Pack — free, private, 2026", "url": "https://marisstella.app/freelancer-tax-pack/", "category": "Creator & solo earner income", "description": "Free year-end tax pack for freelancers: pulls your invoices, expenses and mileage from this browser, then shows Schedule C net profit, self-employment tax, a 2026 federal…", "pages": 1, "launched": "2026-10-07" }, { "slug": "freight-accessorial-auditor", "name": "Freight Accessorial Invoice Auditor", "url": "https://marisstella.app/freight-accessorial-auditor/", "category": "Logistics, freight & cloud cost", "description": "Audit freight accessorial invoices for duplicate, over-expected, and missing-code charges before you pay. Free, private, and runs in your browser.", "pages": 8, "launched": "2026-08-26" }, { "slug": "freight-broker-load-margin-calculator", "name": "Freight Broker Load Margin Calculator — free, private, in your browser", "url": "https://marisstella.app/freight-broker-load-margin-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free freight broker margin calculator. Type in your loads and see true net margin after financing the carrier, factoring, claims reserve and overhead, plus the shipper rate to…", "pages": 2, "launched": "2026-10-01" }, { "slug": "french-drain-bid-calculator", "name": "French Drain Bid Calculator", "url": "https://marisstella.app/french-drain-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price an exterior French drain from trench depth, pipe size, soil, daylight versus drywell versus storm tie-in, catch basins, downspout ties, and driveway crossings — not a…", "pages": 4, "launched": "2026-08-26" }, { "slug": "fuel-surcharge-schedule-calculator", "name": "Fuel Surcharge Calculator — free, private", "url": "https://marisstella.app/fuel-surcharge-schedule-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free fuel surcharge calculator for truckers and brokers: enter the DOE diesel price, the peg, the mpg basis and your trip, and see what each fuel surcharge program pays against…", "pages": 1, "launched": "2026-10-10" }, { "slug": "fundraising-event-net-calculator", "name": "Fundraising Event Net Calculator — free, private", "url": "https://marisstella.app/fundraising-event-net-calculator/", "category": "Service business pricing & quotes", "description": "Free fundraising event calculator for galas, auctions and benefit dinners: enter tickets, sponsors, auction, giving and costs, and get net proceeds, cost per dollar raised…", "pages": 1, "launched": "2026-10-11" }, { "slug": "funeral-price-list-checker", "name": "Funeral price list checker: what is required, what is your choice", "url": "https://marisstella.app/funeral-price-list-checker/", "category": "Creator & solo earner income", "description": "Paste a funeral home's price list or quote and see which charges you cannot decline, which are your choice, which are paid to others, and which the FTC Funeral Rule questions…", "pages": 2, "launched": "2026-10-12" }, { "slug": "furnace-bid-calculator", "name": "Furnace Bid Calculator", "url": "https://marisstella.app/furnace-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a furnace or heat-pump replacement from extra duct past the included run, attic versus basement, a matching coil, a gas upsize, haul-away of the old unit, and a thermostat —…", "pages": 4, "launched": "2026-08-26" }, { "slug": "gabor-granger-price-analyzer", "name": "Gabor-Granger Price Analyzer — free, private, in your browser", "url": "https://marisstella.app/gabor-granger-price-analyzer/", "category": "Back-office money & contracts", "description": "Free Gabor-Granger price analyzer. Paste the highest price each survey respondent would buy at and get the demand curve, the revenue-maximising price, the profit-maximising price…", "pages": 1, "launched": "2026-09-30" }, { "slug": "gambling-loss-deduction-calculator", "name": "Gambling Loss Deduction Calculator — free, 2026 90% cap", "url": "https://marisstella.app/gambling-loss-deduction-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the OBBBA gambling loss deduction limit: your allowable Schedule A deduction is the lesser of your actual losses or 90% of your winnings, starting with 2026…", "pages": 2, "launched": "2026-09-25" }, { "slug": "garage-door-bid-calculator", "name": "Garage Door Bid Calculator", "url": "https://marisstella.app/garage-door-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price a garage door replacement or broken-spring service from parts, shop labor, and travel — not a lump-sum guess. See when a $189 spring special loses money on the drive.", "pages": 5, "launched": "2026-08-26" }, { "slug": "garmin-world-traveler-watchface", "name": "World Traveler | A world-time Garmin watch face", "url": "https://marisstella.app/garmin-world-traveler-watchface/", "category": "Creator & solo earner income", "description": "A Garmin Connect IQ watch face with a fixed 24-hour ring and 42 world cities placed at their current local hour. No permissions, no network.", "pages": 1, "launched": "2026-10-15" }, { "slug": "gbp-bulk-location-check", "name": "GBP Bulk Location Check — free, private, in your browser", "url": "https://marisstella.app/gbp-bulk-location-check/", "category": "Compliance checks & evidence records", "description": "Catch what breaks a Google Business Profile bulk upload, with the line number, before you upload. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "ghost-kitchen-brand-picker", "name": "Ghost kitchen brand picker", "url": "https://marisstella.app/ghost-kitchen-brand-picker/", "category": "Restaurant, bar & food truck pricing", "description": "Free tool for ghost kitchens and delivery-only restaurants running several virtual brands with limited kitchen hours: get the exact most profitable set of brands after food cost…", "pages": 1, "launched": "2026-10-09" }, { "slug": "ghost-members-export-analyzer", "name": "Ghost Members Export Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/ghost-members-export-analyzer/", "category": "Back-office money & contracts", "description": "Free analyzer for Ghost publishers: drop in your members export CSV and see paid and free members, free-to-paid conversion, who never opens your emails, what cleaning the list…", "pages": 1, "launched": "2026-09-29" }, { "slug": "ghostwriter-book-quote-calculator", "name": "Ghostwriter book quote calculator", "url": "https://marisstella.app/ghostwriter-book-quote-calculator/", "category": "Service business pricing & quotes", "description": "Free ghostwriter quote calculator: build a book fee from drafting, interview, research and revision hours, add confidentiality and rush premiums, see per-word and per-page rates…", "pages": 1, "launched": "2026-10-09" }, { "slug": "gift-vs-inherit-basis-calculator", "name": "Gift vs inherit basis calculator", "url": "https://marisstella.app/gift-vs-inherit-basis-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator: should you gift a house or stock to your child now or let them inherit it? Compares carryover basis against the stepped-up basis, the capital gains tax, Form 709…", "pages": 1, "launched": "2026-10-08" }, { "slug": "gig-driver-earnings-report-analyzer", "name": "Gig Driver Earnings Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/gig-driver-earnings-report-analyzer/", "category": "Back-office money & contracts", "description": "Free earnings analyzer for Uber, Lyft, DoorDash and Instacart drivers: drop in your trip history CSV and see net pay per hour and per mile after vehicle cost, which app, weekday…", "pages": 1, "launched": "2026-09-29" }, { "slug": "gig-driver-net-pay-calculator", "name": "Gig Driver Net Pay Calculator", "url": "https://marisstella.app/gig-driver-net-pay-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for DoorDash, Uber Eats, Instacart, Uber, and Lyft drivers: turn one session's gross pay into real net pay per hour and per mile after gas, maintenance, and…", "pages": 6, "launched": "2026-09-07" }, { "slug": "git-bus-factor-check", "name": "If one person left tomorrow, which folders would nobody understand?", "url": "https://marisstella.app/git-bus-factor-check/", "category": "CI checks & developer gates", "description": "Paste your git log and see the bus factor (truck factor) of every folder: who really owns it, whether they are still active, and who to pair with. Free, runs in your browser…", "pages": 2, "launched": "2026-10-03" }, { "slug": "git-exposure-check", "name": "Git Exposure Checker", "url": "https://marisstella.app/git-exposure-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends two real requests to your site (.git/HEAD and .git/config), then paste the JSON here for a plain-English report on whether your .git directory is…", "pages": 4, "launched": "2026-09-23" }, { "slug": "git-timesheet", "name": "Turn your git history into a timesheet your client can read", "url": "https://marisstella.app/git-timesheet/", "category": "CI checks & developer gates", "description": "Paste your git log and get estimated hours per day, a client-ready work summary in Markdown or CSV, and an invoice figure at your hourly rate. Free, private, runs in your browser…", "pages": 2, "launched": "2026-10-03" }, { "slug": "glamping-unit-payback-calculator", "name": "Glamping unit payback calculator: does the site pay for itself? Free, private", "url": "https://marisstella.app/glamping-unit-payback-calculator/", "category": "Marketplace seller tools", "description": "Free payback calculator for glamping and cabin sites: build cost, shared infrastructure, seasonal nightly rates and occupancy, commission, turnovers and a loan become operating…", "pages": 1, "launched": "2026-10-12" }, { "slug": "golf-simulator-bay-profit-calculator", "name": "Golf Simulator Bay Profit Calculator — monthly profit, payback and break-even utilization", "url": "https://marisstella.app/golf-simulator-bay-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for indoor golf simulator lounges and bay-rental venues. Enter bays, peak and off-peak rates, utilization, members, food and drink, rent and staff; it shows…", "pages": 2, "launched": "2026-10-12" }, { "slug": "good-faith-estimate-generator", "name": "Good Faith Estimate generator for self-pay patients — free, private", "url": "https://marisstella.app/good-faith-estimate-generator/", "category": "Service business pricing & quotes", "description": "Free Good Faith Estimate generator for the No Surprises Act: list services with codes and charges, get a printable estimate, the delivery deadline, a completeness check, a $400…", "pages": 1, "launched": "2026-10-08" }, { "slug": "google-ads-editor-csv-check", "name": "Google Ads Editor CSV Check — free, private, in your browser", "url": "https://marisstella.app/google-ads-editor-csv-check/", "category": "Compliance checks & evidence records", "description": "Catch what breaks a Google Ads Editor bulk import, with the line number, before you import. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "google-ads-wasted-spend-analyzer", "name": "Google Ads Wasted Spend Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/google-ads-wasted-spend-analyzer/", "category": "Back-office money & contracts", "description": "Free Google Ads wasted spend analyzer: drop in your search terms report CSV and see how much you spent on terms that never converted, which negative keywords are safe to add, and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "google-contacts-csv-check", "name": "Google Contacts CSV Check — free, private, in your browser", "url": "https://marisstella.app/google-contacts-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Google Contacts CSV checker: finds headings Google skips, emails and phone numbers that will not import, impossible birthdays, blank and duplicate rows and Excel damage, with…", "pages": 1, "launched": "2026-10-05" }, { "slug": "google-play-earnings-report-analyzer", "name": "Google Play Earnings Report Analyzer — free, private, in your browser", "url": "https://marisstella.app/google-play-earnings-report-analyzer/", "category": "Back-office money & contracts", "description": "Free analyzer for Android developers: drop in your Google Play Console Earnings report and see net earnings by app, product type, country and month, the effective Google fee and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "gpsr-product-safety-checker", "name": "GPSR checker: do you need an EU responsible person to sell consumer goods in the EU? Free, private", "url": "https://marisstella.app/gpsr-product-safety-checker/", "category": "Compliance checks & evidence records", "description": "Free EU General Product Safety Regulation (GPSR) checker for online sellers: is your product in scope, is an EU responsible person behind it, and which basic duties are still…", "pages": 1, "launched": "2026-10-13" }, { "slug": "gpx-track-check", "name": "GPX Track Check — free, private, in your browser", "url": "https://marisstella.app/gpx-track-check/", "category": "Compliance checks & evidence records", "description": "Free GPX checker: finds why Strava, Garmin Connect or Komoot rejects a track file, with line numbers: missing creator, version and namespace, GPS jumps, points at 0,0, timestamps…", "pages": 1, "launched": "2026-10-05" }, { "slug": "grailed-fee-calculator", "name": "Grailed Fee Calculator", "url": "https://marisstella.app/grailed-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Grailed seller fee calculator for the tiered commission (6% under $120 with a $1.99 minimum, 9% from $120) plus 3.49% + $0.49 payment processing. See your payout, profit, the…", "pages": 3, "launched": "2026-10-18" }, { "slug": "grain-store-or-sell-calculator", "name": "Grain Store or Sell Calculator — break-even price for storing corn and soybeans", "url": "https://marisstella.app/grain-store-or-sell-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free store-or-sell calculator for grain farmers. Enter harvest moisture, drying, storage and interest costs and later bids; it shows what each later price nets versus selling at…", "pages": 2, "launched": "2026-10-11" }, { "slug": "grant-deadline-tracker", "name": "Grant Deadline Tracker for Small Nonprofits", "url": "https://marisstella.app/grant-deadline-tracker/", "category": "Compliance checks & evidence records", "description": "Free private grant deadline and reporting tracker for small nonprofits. Find overdue obligations, see award funds remaining, and compare hiring a grant writer against the cash a…", "pages": 5, "launched": "2026-08-26" }, { "slug": "grant-indirect-cost-calculator", "name": "How much indirect cost can you charge on your grant budget?", "url": "https://marisstella.app/grant-indirect-cost-calculator/", "category": "Compliance checks & evidence records", "description": "Free grant budget calculator: find your modified total direct costs (MTDC) with the $50,000 subaward and $10,000 equipment rules applied, the indirect cost you can charge at 15%…", "pages": 2, "launched": "2026-10-03" }, { "slug": "grant-reporting-tracker", "name": "Grant Reporting Tracker for Small Nonprofits", "url": "https://marisstella.app/grant-reporting-tracker/", "category": "Compliance checks & evidence records", "description": "Track nonprofit grant reporting deadlines, restricted balances, and award review status in a private browser-based tracker. No account or upload required.", "pages": 4, "launched": "2026-08-26" }, { "slug": "grant-writer-proposal-price-calculator", "name": "Grant Writer Proposal Price Calculator — free", "url": "https://marisstella.app/grant-writer-proposal-price-calculator/", "category": "Compliance checks & evidence records", "description": "Free grant writer pricing calculator: turn your target hourly pay, unbillable time and tax into a flat fee per proposal, check fees you already quoted and test your month. Runs in…", "pages": 1, "launched": "2026-10-06" }, { "slug": "grape-grower-sell-vs-bottle-calculator", "name": "Sell grapes or bottle wine? A calculator for vineyard owners", "url": "https://marisstella.app/grape-grower-sell-vs-bottle-calculator/", "category": "Service business pricing & quotes", "description": "Free vineyard calculator: compare selling your grapes by the ton with bottling and selling your own wine. Break-even sell-through, bottle price, grape price and acreage. Runs in…", "pages": 1, "launched": "2026-10-09" }, { "slug": "graphql-introspection-exposure-check", "name": "GraphQL Introspection Exposure Checker", "url": "https://marisstella.app/graphql-introspection-exposure-check/", "category": "CI checks & developer gates", "description": "Free tool: sends one real introspection query to a GraphQL endpoint URL you choose and reports whether introspection is enabled -- exposing every query, mutation, and type name…", "pages": 3, "launched": "2026-09-23" }, { "slug": "gravel-driveway-bid-calculator", "name": "Gravel Driveway Bid Calculator", "url": "https://marisstella.app/gravel-driveway-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a gravel driveway from crusher-run, clean stone, recycled concrete, or pea gravel: compacted depth, whole truckloads, soil prep, fabric, and apron — plus the walk-away price…", "pages": 4, "launched": "2026-08-26" }, { "slug": "grazing-lease-rate-calculator", "name": "Grazing Lease Rate Calculator — free, private", "url": "https://marisstella.app/grazing-lease-rate-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free grazing lease calculator for ranchers and landowners: AUMs and head your pasture carries, rent per AUM, per head and per acre, the hay-feeding break-even, and the rent range…", "pages": 1, "launched": "2026-10-10" }, { "slug": "grease-trap-pumping-price-calculator", "name": "Grease Trap Pumping Price Calculator — free, private", "url": "https://marisstella.app/grease-trap-pumping-price-calculator/", "category": "Service business pricing & quotes", "description": "Free grease trap pumping bid calculator: enter the trap, truck, dump trip, labour and disposal fee, and get a price per visit, the pump-out interval under the 25 percent rule and…", "pages": 1, "launched": "2026-10-10" }, { "slug": "greenhouse-bench-planner", "name": "Greenhouse bench planner: sow dates and bench space by week — free, private", "url": "https://marisstella.app/greenhouse-bench-planner/", "category": "Creator & solo earner income", "description": "Free greenhouse and nursery planner: enter what you promised to sell and when, and get sow dates, bench and germination space by week, what will not fit and what extra space is…", "pages": 1, "launched": "2026-10-07" }, { "slug": "gtin-list-check", "name": "GTIN List Check — free, private, in your browser", "url": "https://marisstella.app/gtin-list-check/", "category": "Compliance checks & evidence records", "description": "Free bulk barcode checker: validates a list of UPC, EAN, GTIN and ISBN codes, finds bad check digits, leading zeros lost to Excel, scientific notation, duplicates and reserved…", "pages": 1, "launched": "2026-10-05" }, { "slug": "gumroad-sales-fee-analyzer", "name": "Gumroad Sales Fee Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/gumroad-sales-fee-analyzer/", "category": "Creator & solo earner income", "description": "Free Gumroad fee calculator for sellers: drop in your sales CSV and see the service fee actually taken, take-home per order, net revenue per product, repeat buyers, refunds…", "pages": 1, "launched": "2026-09-29" }, { "slug": "gumroad-sales-to-journal", "name": "Gumroad sales export to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/gumroad-sales-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Gumroad sales to journal converter: proves the sales add up to your payout, splits product sales, shipping, tax you collected, Gumroad fees and refunds by month, and…", "pages": 1, "launched": "2026-10-05" }, { "slug": "gutter-cleaning-bid-calculator", "name": "Gutter Cleaning Bid Calculator", "url": "https://marisstella.app/gutter-cleaning-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a gutter cleaning visit from linear feet, stories, roof pitch, gutter guards, debris, and downspouts — then loaded wage, travel, disposal, a minimum stop charge, and an…", "pages": 4, "launched": "2026-08-26" }, { "slug": "gutter-guard-bid-calculator", "name": "Gutter Guard Bid Calculator", "url": "https://marisstella.app/gutter-guard-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a gutter guard install from extra stories, extra lineal feet, extra miters, extra downspouts, a clean-first pass, fascia repair, and steep-roof access — not a published…", "pages": 5, "launched": "2026-08-26" }, { "slug": "gutter-install-bid-calculator", "name": "Gutter Install Bid Calculator", "url": "https://marisstella.app/gutter-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a new gutter hang from inside and outside miters, extra downspouts past the included first two, extra downspout footage, second-story hours, fascia repair, and tear-off —…", "pages": 4, "launched": "2026-08-26" }, { "slug": "h1b-weighted-lottery-odds-calculator", "name": "H-1B weighted lottery odds by wage level — free, private", "url": "https://marisstella.app/h1b-weighted-lottery-odds-calculator/", "category": "Service business pricing & quotes", "description": "Free H-1B weighted lottery odds calculator: enter registrations by wage level (I-IV) and your candidates, and see each person's selection chance under the weighted rule versus the…", "pages": 1, "launched": "2026-10-06" }, { "slug": "hands-free-language-coach", "name": "Hands-Free Language Coach", "url": "https://marisstella.app/hands-free-language-coach/", "category": "Learning & practice", "description": "Learn a language by voice alone: the coach says a phrase, you say it back, it listens and scores you, and moves on. No tapping, no screen. Streaks, XP and spaced review like a…", "pages": 1, "launched": "2026-10-19" }, { "slug": "handyman-minimum-job-calculator", "name": "Handyman Minimum Job Calculator — free, private, in your browser", "url": "https://marisstella.app/handyman-minimum-job-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Handyman minimum job calculator. Enter the hourly pay you want, overhead, drive and estimate time and mileage to see your minimum trip charge, the smallest job worth driving to…", "pages": 1, "launched": "2026-10-01" }, { "slug": "hard-money-loan-cost-calculator", "name": "Hard money loan cost calculator for fix-and-flip", "url": "https://marisstella.app/hard-money-loan-cost-calculator/", "category": "Back-office money & contracts", "description": "Free hard money loan calculator for house flippers: compare two lenders on interest, points, draw fees, minimum interest and extension fees, see the effective annual rate, your…", "pages": 1, "launched": "2026-10-09" }, { "slug": "hardwood-refinishing-bid-calculator", "name": "Hardwood Refinishing Bid Calculator", "url": "https://marisstella.app/hardwood-refinishing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a hardwood floor refinish from field square footage, stair treads, closets, stain, and extra coats — then see price per square foot, the share of hours eaten by stairs, and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "hay-baling-own-vs-hire-calculator", "name": "Should I buy a baler or hire custom baling? Free break-even calculator", "url": "https://marisstella.app/hay-baling-own-vs-hire-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free hay baling calculator: should you own a baler or hire a custom baler? Acres, yield, equipment cost, labour and the custom price per bale in; own vs hire cost, break-even…", "pages": 1, "launched": "2026-10-07" }, { "slug": "hay-sale-price-calculator", "name": "Hay Sale Price Calculator — free, private", "url": "https://marisstella.app/hay-sale-price-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free hay pricing calculator for hay producers: compare small squares, large squares and round bales on net profit per ton and per acre, with break-even price per bale. Runs in…", "pages": 1, "launched": "2026-10-10" }, { "slug": "hearing-aid-dispensing-margin-calculator", "name": "Hearing aid dispensing margin calculator", "url": "https://marisstella.app/hearing-aid-dispensing-margin-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for hearing aid clinics and audiologists: what each hearing aid sale really earns after device cost, trial-period returns, follow-up visits, commission, card and…", "pages": 1, "launched": "2026-10-09" }, { "slug": "hearth-and-horizon", "name": "Hearth & Horizon: free AI-written science fiction and Catholic bedtime stories, with audio", "url": "https://marisstella.app/hearth-and-horizon/", "category": "Learning & practice", "description": "Free short science fiction about the next thousand years, stories written for AI agents, and Catholic bedtime stories about the saints. Read or listen; podcast RSS feeds; CC BY-SA…", "pages": 160, "launched": "2026-10-20" }, { "slug": "heat-pump-vs-furnace-calculator", "name": "Heat Pump vs Furnace Calculator — free, private, in your browser", "url": "https://marisstella.app/heat-pump-vs-furnace-calculator/", "category": "Back-office money & contracts", "description": "Free heat pump vs gas furnace calculator for homeowners. Enter your gas therms, prices, COP and quotes to see running cost per million BTU, the break-even COP, payback against a…", "pages": 1, "launched": "2026-09-30" }, { "slug": "helm-values-schema-check", "name": "Does your values.yaml actually match its own schema?", "url": "https://marisstella.app/helm-values-schema-check/", "category": "CI checks & developer gates", "description": "Paste a Helm values.yaml and values.schema.json to find silently ignored typos, missing required fields and type mismatches. Runs in your browser, no Helm needed.", "pages": 4, "launched": "2026-09-17" }, { "slug": "heloc-vs-cash-out-refinance-calculator", "name": "HELOC or cash-out refinance? Free calculator", "url": "https://marisstella.app/heloc-vs-cash-out-refinance-calculator/", "category": "Creator & solo earner income", "description": "Free HELOC vs cash-out refinance calculator: total cost of each at the year you sell or refinance, the repricing cost on your existing mortgage, the HELOC rate at which they tie…", "pages": 1, "launched": "2026-10-08" }, { "slug": "help-keeper", "name": "Help Keeper — a help center that tells you what to write next", "url": "https://marisstella.app/help-keeper/", "category": "Self-hosted business apps", "description": "A help center you host yourself: Markdown articles, typo-tolerant ranked search, helpful votes and a report of what visitors searched for and could not find. Open source, MIT, no…", "pages": 1, "launched": "2026-10-16" }, { "slug": "hidden-unicode-check", "name": "Hidden Unicode Check", "url": "https://marisstella.app/hidden-unicode-check/", "category": "CI checks & developer gates", "description": "Find invisible zero-width, tag and bidi override characters hidden in CLAUDE.md, AGENTS.md, rules files or any text. Free, private, runs in your browser.", "pages": 4, "launched": "2026-09-24" }, { "slug": "hoa-reserve-fund-calculator", "name": "HOA Reserve Fund Calculator", "url": "https://marisstella.app/hoa-reserve-fund-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for HOA/condo board treasurers: project whether your current reserve contribution covers known roof, repaving, painting, pool, elevator, and HVAC replacements, or…", "pages": 4, "launched": "2026-09-16" }, { "slug": "hoarding-cleanout-bid-calculator", "name": "Hoarding Cleanout Bid Calculator — free, private", "url": "https://marisstella.app/hoarding-cleanout-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free hoarding and heavy-clutter cleanout bid calculator: enter floor area, how full the space is, crew, containers and dump fees, and get a price, the days and containers needed…", "pages": 1, "launched": "2026-10-11" }, { "slug": "holiday-light-bid-calculator", "name": "Holiday Light Bid Calculator", "url": "https://marisstella.app/holiday-light-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price Christmas lights from eave lineal feet, hang-only versus hang-and-takedown versus full-service storage, 1-story versus 2-story versus 3-story access, and extras — plus the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "home-care-agency-margin-calculator", "name": "Home Care Agency Margin Calculator — free, private, in your browser", "url": "https://marisstella.app/home-care-agency-margin-calculator/", "category": "Service business pricing & quotes", "description": "Margin calculator for non-medical home care agencies. See what each payer really leaves per billed hour after payroll tax, workers' comp, overtime, unpaid travel and slow payment…", "pages": 1, "launched": "2026-10-01" }, { "slug": "home-elevator-bid-calculator", "name": "Home Elevator Bid Calculator", "url": "https://marisstella.app/home-elevator-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a residential home elevator from stops, travel, pneumatic versus hydraulic versus traction MRL, through-floor versus a new shaft, acrylic versus glass cab, and extras — plus…", "pages": 7, "launched": "2026-08-26" }, { "slug": "home-inspection-business-profit-calculator", "name": "Home Inspection Business Profit Calculator — free, private", "url": "https://marisstella.app/home-inspection-business-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free home inspector calculator: enter inspections per week, fees by size, add-ons, on-site, report and drive hours, mileage, fall-through, E&O and software, and see profit per…", "pages": 1, "launched": "2026-10-11" }, { "slug": "home-inspection-fee-calculator", "name": "Home Inspection Fee Calculator", "url": "https://marisstella.app/home-inspection-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for independent home inspectors: price a residential inspection by square footage, stories, foundation type, and home age, add radon, sewer scope, termite/WDO, and…", "pages": 4, "launched": "2026-09-11" }, { "slug": "home-inspection-report-builder", "name": "Free home inspection report builder", "url": "https://marisstella.app/home-inspection-report-builder/", "category": "Service business pricing & quotes", "description": "Free home inspection report builder: pick findings from a library of plain-language comments, edit them, add notes and your own repair cost ranges, and print a clean report sorted…", "pages": 1, "launched": "2026-10-08" }, { "slug": "home-office-deduction-calculator", "name": "Home Office Deduction Calculator — simplified vs regular, free", "url": "https://marisstella.app/home-office-deduction-calculator/", "category": "Back-office money & contracts", "description": "Free home office deduction calculator for the self-employed: compare the IRS simplified method ($5 per sq ft, max $1,500) with the regular Form 8829 method, including the gross…", "pages": 1, "launched": "2026-09-29" }, { "slug": "home-sale-exclusion-calculator", "name": "Home Sale Exclusion Calculator — free, private, in your browser", "url": "https://marisstella.app/home-sale-exclusion-calculator/", "category": "Back-office money & contracts", "description": "Free home sale tax calculator. Enter your sale price, purchase price and improvements to see how much gain the $250,000 or $500,000 exclusion covers, the tax on the rest, and what…", "pages": 1, "launched": "2026-09-30" }, { "slug": "home-sale-net-proceeds-calculator", "name": "Home Sale Net Proceeds Calculator — what you really walk away with", "url": "https://marisstella.app/home-sale-net-proceeds-calculator/", "category": "Creator & solo earner income", "description": "Free home sale net proceeds calculator. See cash at closing after commissions, fees and payoff, estimate capital gains tax, find the list price that nets a target, and compare…", "pages": 2, "launched": "2026-10-11" }, { "slug": "home-service-lead-roi-analyzer", "name": "Home Service Lead ROI Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/home-service-lead-roi-analyzer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free analyzer for plumbers, electricians, HVAC and other home-service pros: load your Thumbtack, Angi, Google Local Services, Yelp or ad leads and see cost per lead, close rate…", "pages": 1, "launched": "2026-09-29" }, { "slug": "home-staging-bid-calculator", "name": "Home Staging Bid Calculator", "url": "https://marisstella.app/home-staging-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Free calculator for independent home stagers: price a vacant-listing staging job from the included term, furniture carrying cost, crew labor, and mileage, then check whether your…", "pages": 5, "launched": "2026-09-06" }, { "slug": "hood-cleaning-bid-calculator", "name": "Kitchen Hood Cleaning Bid Calculator", "url": "https://marisstella.app/hood-cleaning-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a restaurant hood and exhaust cleaning from the system — canopy, filters, duct, and rooftop fan — plus grease load, after-hours access, and the walk-away number. Not a…", "pages": 5, "launched": "2026-08-26" }, { "slug": "horse-boarding-stall-profit-calculator", "name": "Horse boarding profit calculator: is your barn making money? Free, private", "url": "https://marisstella.app/horse-boarding-stall-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free profit calculator for horse boarding barns: stalls, occupancy, board price, feed, bedding, your own care time and fixed costs become monthly profit, break-even occupancy and…", "pages": 1, "launched": "2026-10-06" }, { "slug": "hos-trip-planner", "name": "HOS Trip Planner — free, private", "url": "https://marisstella.app/hos-trip-planner/", "category": "Logistics, freight & cloud cost", "description": "Free hours-of-service trip planner for owner-operators and dispatchers: enter your remaining drive, window and cycle clocks and your stops, and see the schedule with required…", "pages": 1, "launched": "2026-10-10" }, { "slug": "hot-tub-bid-calculator", "name": "Hot Tub Bid Calculator", "url": "https://marisstella.app/hot-tub-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a hot-tub install from size, access path, circuit footage, pad, haul-away, and crane — not a published $499-delivery-and-setup special. See the walk-away number before you…", "pages": 4, "launched": "2026-08-26" }, { "slug": "house-cleaning-quote-calculator", "name": "House Cleaning Quote Calculator — free, private, in your browser", "url": "https://marisstella.app/house-cleaning-quote-calculator/", "category": "Service business pricing & quotes", "description": "House cleaning quote calculator for cleaning business owners. Enter home size, your cleaners' pace and wages, supplies and drive time to see cost per visit, the lowest price that…", "pages": 1, "launched": "2026-10-01" }, { "slug": "house-hack-calculator", "name": "House Hack Calculator — free, private", "url": "https://marisstella.app/house-hack-calculator/", "category": "Creator & solo earner income", "description": "Free house hacking calculator for a duplex, triplex or fourplex: FHA or conventional payment with mortgage insurance, the rent you need to live free, the FHA self-sufficiency…", "pages": 1, "launched": "2026-10-10" }, { "slug": "hreflang-reciprocity-check", "name": "hreflang Reciprocity Check", "url": "https://marisstella.app/hreflang-reciprocity-check/", "category": "CI checks & developer gates", "description": "Free tool: paste a page's HTML (or try fetching its alternates) and check its hreflang tags for missing reciprocal links, invalid language/region codes (en-uk vs en-GB), a missing…", "pages": 4, "launched": "2026-09-11" }, { "slug": "hsa-contribution-limit-calculator", "name": "HSA Contribution Limit Calculator — free, 2026", "url": "https://marisstella.app/hsa-contribution-limit-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the 2026 HSA contribution limit — self-only $4,400 or family $8,750, the $1,000 age-55 catch-up, HDHP qualification bounds, monthly proration for partial-year…", "pages": 2, "launched": "2026-09-25" }, { "slug": "hsa-shoebox-reimbursement-planner", "name": "HSA shoebox planner: what are your unreimbursed receipts worth?", "url": "https://marisstella.app/hsa-shoebox-reimbursement-planner/", "category": "Creator & solo earner income", "description": "Free HSA shoebox planner: list the medical receipts you paid out of pocket, then see how much tax you avoid by letting the HSA grow and reimbursing yourself later, versus…", "pages": 1, "launched": "2026-10-08" }, { "slug": "hubspot-contacts-csv-check", "name": "HubSpot Contacts CSV Check — free, private, in your browser", "url": "https://marisstella.app/hubspot-contacts-csv-check/", "category": "Compliance checks & evidence records", "description": "Free HubSpot contacts and companies CSV checker: finds duplicate and invalid emails, Excel-damaged phone numbers and ZIP codes, date format problems, bad lifecycle stage and lead…", "pages": 1, "launched": "2026-10-04" }, { "slug": "hunting-lease-income-calculator", "name": "Hunting Lease Income Calculator — free, private", "url": "https://marisstella.app/hunting-lease-income-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free hunting lease income calculator for landowners: compare a flat club lease, per-hunter seasonal leases and paid day hunts after insurance, upkeep and lost use, and see the…", "pages": 1, "launched": "2026-10-10" }, { "slug": "hvac-maintenance-contract-calculator", "name": "HVAC Maintenance Contract Pricing Calculator", "url": "https://marisstella.app/hvac-maintenance-contract-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Free HVAC maintenance contract pricing calculator. Price preventive visits, callbacks, parts reserve, overhead, and target margin without underbidding the agreement.", "pages": 4, "launched": "2026-08-26" }, { "slug": "hvac-repair-tier-price-calculator", "name": "What should Good, Better and Best HVAC repair options cost?", "url": "https://marisstella.app/hvac-repair-tier-price-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "True cost per hour, a diagnostic fee, three repair prices with tiered parts markup and what an average call earns at your mix. Your numbers, not advice. No account, no upload.", "pages": 3, "launched": "2026-10-03" }, { "slug": "hydroponic-farm-profit-calculator", "name": "Hydroponic farm calculator: how many heads a week to break even? Free, private", "url": "https://marisstella.app/hydroponic-farm-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free hydroponic and indoor farm profit calculator: growing area, plant density, crop cycle, prices, lights, labour and rent become heads a week, monthly profit, break-even, the…", "pages": 1, "launched": "2026-10-12" }, { "slug": "hydroseeding-job-bid-calculator", "name": "Hydroseeding Job Bid Calculator — free, private", "url": "https://marisstella.app/hydroseeding-job-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free hydroseeding bid calculator: enter seed, mulch, water, tank size, crew, travel and equipment and see the cost and profit of a job, the price per 1,000 sq ft for your target…", "pages": 1, "launched": "2026-10-11" }, { "slug": "iban-list-check", "name": "IBAN List Check — free, private, in your browser", "url": "https://marisstella.app/iban-list-check/", "category": "Compliance checks & evidence records", "description": "Free bulk IBAN checker: validates a whole column of IBANs, finds wrong check digits (with the swapped-digit fix), wrong lengths, unknown countries, stray spaces, duplicates and…", "pages": 1, "launched": "2026-10-05" }, { "slug": "ice-cream-shop-seasonal-profit-calculator", "name": "Ice cream shop seasonal profit calculator: break-even, off-season and loan coverage. Free, private", "url": "https://marisstella.app/ice-cream-shop-seasonal-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free ice cream shop profit calculator: twelve months of days open and customers per day become monthly profit, break-even customers, open-or-close verdicts, loan coverage and the…", "pages": 1, "launched": "2026-10-13" }, { "slug": "ice-dam-removal-bid-calculator", "name": "Ice Dam Removal Bid Calculator", "url": "https://marisstella.app/ice-dam-removal-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Free calculator for independent ice dam removal contractors: price a job from linear feet of roof edge, crew size, an emergency/storm premium, and a minimum service charge, then…", "pages": 4, "launched": "2026-09-06" }, { "slug": "icp-lens", "name": "ICP Lens — who do your best customers have in common, and who else looks like them?", "url": "https://marisstella.app/icp-lens/", "category": "Back-office money & contracts", "description": "A free, open-source alternative to lead-scoring add-ons: learn your ideal customer profile from your own won and lost list, rank your prospects by lookalike fit with a…", "pages": 1, "launched": "2026-10-16" }, { "slug": "ics-calendar-check", "name": "ICS Calendar Check — free, private, in your browser", "url": "https://marisstella.app/ics-calendar-check/", "category": "Compliance checks & evidence records", "description": "Free iCalendar (.ics) checker: finds the missing UID, DTSTAMP and VERSION, events that end before they start, bad recurrence rules, time zones without definitions, duplicate UIDs…", "pages": 1, "launched": "2026-10-05" }, { "slug": "ie-self-employed-tax-set-aside-calculator", "name": "Ireland Self-Employed Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/ie-self-employed-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free Irish self-employed tax calculator: enter income and expenses to see income tax, USC, Class S PRSI and how much of every invoice to set aside. Runs in your browser; nothing…", "pages": 1, "launched": "2026-10-14" }, { "slug": "ifta-quarterly-fuel-tax-calculator", "name": "IFTA Quarterly Fuel Tax Calculator", "url": "https://marisstella.app/ifta-quarterly-fuel-tax-calculator/", "category": "Logistics, freight & cloud cost", "description": "Work your IFTA quarterly return from your own trip and fuel records: average fleet MPG, taxable gallons and net taxable gallons per jurisdiction, the Indiana/Kentucky/Virginia…", "pages": 4, "launched": "2026-09-10" }, { "slug": "import-landed-cost-calculator", "name": "Import Landed Cost Calculator", "url": "https://marisstella.app/import-landed-cost-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free landed cost calculator for small importers: item cost, freight, duty and Section 301 tariff give cost per unit, with CBP MPF and HMF fees included.", "pages": 5, "launched": "2026-09-17" }, { "slug": "in-freelancer-advance-tax-set-aside-calculator", "name": "India Freelancer Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/in-freelancer-advance-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free India freelancer tax calculator: enter receipts and expenses to see new-regime income tax with the 87A rebate and cess, compare section 44ADA presumptive taxation, get the…", "pages": 1, "launched": "2026-10-14" }, { "slug": "incident-postmortem-timeline", "name": "Turn incident notes into a postmortem draft", "url": "https://marisstella.app/incident-postmortem-timeline/", "category": "CI checks & developer gates", "description": "Paste an incident log and get time to detect, acknowledge, mitigate and resolve plus a blameless postmortem draft in Markdown. Free incident timeline generator and MTTR…", "pages": 2, "launched": "2026-10-03" }, { "slug": "independent-pharmacy-rx-margin-calculator", "name": "Independent pharmacy prescription margin calculator", "url": "https://marisstella.app/independent-pharmacy-rx-margin-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for independent pharmacies: what each kind of prescription really earns after drug cost, supplies, PBM claim fees, DIR fees, rejected claims, delivery and staff…", "pages": 1, "launched": "2026-10-09" }, { "slug": "indie-game-payout-calculator", "name": "Indie Game Payout Calculator — free, private, in your browser", "url": "https://marisstella.app/indie-game-payout-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for indie game developers: what a game actually pays you on Steam, Epic Games Store, itch.io and GOG after tax, refunds, the store cut and fees, and how many…", "pages": 1, "launched": "2026-09-29" }, { "slug": "indoor-play-center-profit-calculator", "name": "Indoor play center calculator: how many visits a week to break even? Free, private", "url": "https://marisstella.app/indoor-play-center-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free indoor play center profit calculator: weekday and weekend visits, memberships, birthday parties, cafe spend, staffing, rent and a loan become monthly profit, break-even…", "pages": 1, "launched": "2026-10-13" }, { "slug": "influencer-media-kit-generator", "name": "Build a free creator media kit in minutes", "url": "https://marisstella.app/influencer-media-kit-generator/", "category": "Creator & solo earner income", "description": "Build a professional sponsorship media kit for your channel in minutes — bio, platform reach, audience breakdown, past brand partnerships, and your rate card. Free, no signup…", "pages": 4, "launched": "2026-09-11" }, { "slug": "inherited-ira-10-year-withdrawal-planner", "name": "Inherited IRA 10-Year Rule Calculator 2026 — withdrawal plan, free", "url": "https://marisstella.app/inherited-ira-10-year-withdrawal-planner/", "category": "Back-office money & contracts", "description": "Free inherited IRA 10-year rule calculator: plan how much to withdraw each year to empty the account by the deadline at the lowest tax, with the yearly required minimum if the…", "pages": 1, "launched": "2026-10-06" }, { "slug": "injury-settlement-net-proceeds-calculator", "name": "Injury settlement calculator: how much do you actually keep? Free, private", "url": "https://marisstella.app/injury-settlement-net-proceeds-calculator/", "category": "Service business pricing & quotes", "description": "Free injury settlement calculator: enter the gross amount, attorney fee, costs and medical liens and see what the client actually takes home, with Medicare's procurement-cost…", "pages": 1, "launched": "2026-10-06" }, { "slug": "installment-sale-tax-calculator", "name": "Installment sale tax calculator: what do you owe each year on a seller-financed sale? Free, private", "url": "https://marisstella.app/installment-sale-tax-calculator/", "category": "Creator & solo earner income", "description": "Free installment sale tax calculator: selling a business, rental or land for a note? See the gain taxed each year, the depreciation recapture due up front, the tax saved by…", "pages": 1, "launched": "2026-10-06" }, { "slug": "insurance-agency-book-valuation-calculator", "name": "Insurance Agency Book Valuation Calculator — free, private, in your browser", "url": "https://marisstella.app/insurance-agency-book-valuation-calculator/", "category": "Back-office money & contracts", "description": "Free insurance agency book of business valuation calculator. Enter revenue, retention, servicing cost and the return you need, and see what the book is worth, compare a purchase…", "pages": 1, "launched": "2026-09-30" }, { "slug": "insurance-commission-reconciler", "name": "Find the commissions your carriers did not pay — free, private", "url": "https://marisstella.app/insurance-commission-reconciler/", "category": "Service business pricing & quotes", "description": "Free commission statement reconciler for independent insurance agencies: load your policy book and your carriers' commission statements, find unpaid policies, short-paid rates…", "pages": 1, "launched": "2026-10-06" }, { "slug": "insurance-denial-appeal-builder", "name": "Insurance Denial Appeal Builder — free, private, in your browser", "url": "https://marisstella.app/insurance-denial-appeal-builder/", "category": "Back-office money & contracts", "description": "Free tool for patients: paste your health insurance denial letter and get the likely denial reason, your appeal deadline, a draft appeal letter, a checklist of what to gather and…", "pages": 1, "launched": "2026-10-02" }, { "slug": "interior-design-fee-calculator", "name": "Which interior design fee model actually pays you the most per hour?", "url": "https://marisstella.app/interior-design-fee-calculator/", "category": "Service business pricing & quotes", "description": "Compare hourly, flat, percent-of-cost, per-square-foot and hybrid interior design fees: effective hourly, break-even overrun and walk-away fee. Nothing uploaded.", "pages": 2, "launched": "2026-10-03" }, { "slug": "interior-door-bid-calculator", "name": "Interior Door Bid Calculator", "url": "https://marisstella.app/interior-door-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price an interior door replacement from door count, hollow slab versus solid-core versus French-or-barn, hang-only versus pocket-conversion, owner-supplied versus…", "pages": 6, "launched": "2026-08-26" }, { "slug": "internal-link-planner", "name": "Internal Link Planner — orphan pages and missing links, found for you", "url": "https://marisstella.app/internal-link-planner/", "category": "Compliance checks & evidence records", "description": "Free internal link audit and planner. Drop in your site's HTML files: it finds orphan pages and pages linked only from menus, then suggests the exact sentences in your other pages…", "pages": 1, "launched": "2026-10-16" }, { "slug": "interview-content-studio", "name": "Interview Content Studio: one interview, a month of content for every platform", "url": "https://marisstella.app/interview-content-studio/", "category": "Creator & solo earner income", "description": "Answer one guided interview about your brand or topic and get a 4-week content calendar with drafts for LinkedIn, Instagram, TikTok, YouTube, X, newsletters, blogs and more. Free…", "pages": 2, "launched": "2026-10-20" }, { "slug": "investor-update-builder", "name": "Investor Update Builder — your numbers, written up for your investors", "url": "https://marisstella.app/investor-update-builder/", "category": "Back-office money & contracts", "description": "Free monthly investor update builder for startup founders. Enter MRR, customers and cash for a few months and get growth, burn, runway, burn multiple, a default-alive check and a…", "pages": 2, "launched": "2026-10-11" }, { "slug": "invoice-aging-late-payer-analyzer", "name": "Invoice Aging & Late Payer Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/invoice-aging-late-payer-analyzer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free analyzer for freelancers, agencies and small businesses: load an invoice export from QuickBooks, FreshBooks, Wave, Xero or a spreadsheet and see accounts receivable aging…", "pages": 1, "launched": "2026-09-29" }, { "slug": "invoice-factoring-cost-calculator", "name": "Invoice Factoring Cost Calculator — free, private", "url": "https://marisstella.app/invoice-factoring-cost-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free invoice factoring calculator: enter advance rate, fee per period and days to pay, and see the true cost, percent of invoice, annualised rate and rebate. Compare several…", "pages": 1, "launched": "2026-10-10" }, { "slug": "invoice-maker", "name": "Invoice Maker — free invoice generator, no signup", "url": "https://marisstella.app/invoice-maker/", "category": "Creator & solo earner income", "description": "Free invoice generator: itemised lines, tax, discount, deposits, due dates and late-fee terms, print to PDF, overdue tracking and receivables aging. No account, no watermark…", "pages": 1, "launched": "2026-10-06" }, { "slug": "invoice-payment-terms-calculator", "name": "Invoice Payment Terms Calculator", "url": "https://marisstella.app/invoice-payment-terms-calculator/", "category": "Back-office money & contracts", "description": "Calculate invoice due dates, when cash actually lands on your client's payment run, late-fee scenarios, cash-flow exposure, whether a 2/10 Net 30 discount still beats waiting, and…", "pages": 9, "launched": "2026-08-26" }, { "slug": "iolta-three-way-reconciliation-checker", "name": "IOLTA three-way reconciliation checker. Free, private", "url": "https://marisstella.app/iolta-three-way-reconciliation-checker/", "category": "Back-office money & contracts", "description": "Free IOLTA / client trust account three-way reconciliation for solo lawyers: paste your trust journal and bank balance to check bank vs journal vs client ledgers, negative client…", "pages": 1, "launched": "2026-10-13" }, { "slug": "ios-privacy-manifest-check", "name": "iOS Privacy Manifest Checker", "url": "https://marisstella.app/ios-privacy-manifest-check/", "category": "CI checks & developer gates", "description": "Free, browser-local checker: scans your Swift/Objective-C source for Apple's Required Reason API usage and compares it against your PrivacyInfo.xcprivacy manifest, so a missing…", "pages": 3, "launched": "2026-09-08" }, { "slug": "irrigation-install-bid-calculator", "name": "Irrigation Install Bid Calculator", "url": "https://marisstella.app/irrigation-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a new sprinkler system from zones, extra heads, trench footage, soil, controller, 3/4-inch PVB versus 1-inch versus 1.5-inch RPZ, drip conversion, rain sensor, and a master…", "pages": 4, "launched": "2026-08-26" }, { "slug": "irrigation-winterization-bid-calculator", "name": "Irrigation Winterization Bid Calculator", "url": "https://marisstella.app/irrigation-winterization-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a sprinkler blowout from spray, rotor, and drip zones, backflow drain-and-insulate time, and the drive — not a $75 neighborhood special. See hours, walk-away price, and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "irs-iris-1099-csv-check", "name": "IRS IRIS 1099 CSV Check — free, private, in your browser", "url": "https://marisstella.app/irs-iris-1099-csv-check/", "category": "Back-office money & contracts", "description": "Free IRIS 1099-NEC and 1099-MISC CSV checker: finds bad TINs, invalid SSNs, state and ZIP errors, money formats, below-threshold amounts and duplicate recipients with line…", "pages": 1, "launched": "2026-10-04" }, { "slug": "iso-exercise-amt-calculator", "name": "ISO Exercise AMT Calculator — free, private, in your browser", "url": "https://marisstella.app/iso-exercise-amt-calculator/", "category": "Back-office money & contracts", "description": "Free ISO and AMT calculator. Enter your income and options to find how many incentive stock options you can exercise this year before the alternative minimum tax starts, and the…", "pages": 1, "launched": "2026-09-29" }, { "slug": "janitorial-bid-calculator", "name": "Janitorial Bid Calculator", "url": "https://marisstella.app/janitorial-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a commercial cleaning contract from production rates, day-porter shifts, and periodic floor care, see what a 5× to 3× cut actually costs, whether letting the building buy…", "pages": 7, "launched": "2026-08-24" }, { "slug": "job-application-tracker", "name": "Job Application Tracker — free, private, no sign-up", "url": "https://marisstella.app/job-application-tracker/", "category": "Compliance checks & evidence records", "description": "Free job application tracker that stays on your device: no account, nothing uploaded. Log applications, get follow-up reminders (calendar export), see which sources actually…", "pages": 3, "launched": "2026-10-15" }, { "slug": "job-margin-variance", "name": "Job Cost Variance Calculator", "url": "https://marisstella.app/job-margin-variance/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Compare estimated and actual job hours and costs to find the largest job cost variance before your next contractor quote.", "pages": 4, "launched": "2026-08-26" }, { "slug": "job-offer-total-comp-calculator", "name": "Job Offer Total Compensation Calculator — free, private, in your browser", "url": "https://marisstella.app/job-offer-total-comp-calculator/", "category": "Back-office money & contracts", "description": "Free job offer comparison calculator. Enter up to three offers with base, bonus, sign-on, equity and hours to see four-year average pay, true hourly rate, and the base salary you…", "pages": 1, "launched": "2026-09-30" }, { "slug": "json-ld-rich-result-validator", "name": "JSON-LD Rich Result Validator — free, private, in your browser", "url": "https://marisstella.app/json-ld-rich-result-validator/", "category": "CI checks & developer gates", "description": "Free JSON-LD and schema markup validator. Paste a page's HTML or JSON-LD and see every missing required and recommended property for Product, Article, LocalBusiness, Recipe…", "pages": 1, "launched": "2026-10-11" }, { "slug": "json-to-types-generator", "name": "JSON to TypeScript, Zod, JSON Schema and Go, in your browser", "url": "https://marisstella.app/json-to-types-generator/", "category": "CI checks & developer gates", "description": "Convert JSON to TypeScript interfaces, Zod schemas, JSON Schema or Go structs. Merges many samples to find optional and nullable fields. Free, runs in your browser, nothing…", "pages": 2, "launched": "2026-10-12" }, { "slug": "junk-car-buyer-offer-calculator", "name": "What can you pay for this junk car? A calculator for scrap and salvage buyers", "url": "https://marisstella.app/junk-car-buyer-offer-calculator/", "category": "Service business pricing & quotes", "description": "Free junk car buyer calculator: the most you can offer for a scrap or salvage car after weight, converter, parts, tow, storage and labour. Profit at the seller's ask and the…", "pages": 1, "launched": "2026-10-09" }, { "slug": "junk-removal-bid-calculator", "name": "Junk Removal Bid Calculator", "url": "https://marisstella.app/junk-removal-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a junk removal job from material weight and the landfill ticket: cubic yards, pounds per yard, dump fee per ton, special item fees, labor, travel, and the walk-away number.", "pages": 6, "launched": "2026-08-26" }, { "slug": "jwt-security-check", "name": "JWT Security Check", "url": "https://marisstella.app/jwt-security-check/", "category": "CI checks & developer gates", "description": "Paste a JWT to decode it and flag misconfigurations: alg:none, embedded keys, algorithm confusion, suspicious kid, bad exp. Free, runs in your browser.", "pages": 3, "launched": "2026-10-17" }, { "slug": "jwt-verification-misuse-check", "name": "Is your code verifying JWTs, or only reading them?", "url": "https://marisstella.app/jwt-verification-misuse-check/", "category": "CI checks & developer gates", "description": "Paste your JavaScript, Python, Go or Java code and find JWT verification misuse: jwt.decode where verify is needed, verify_signature False, alg none, unpinned algorithms…", "pages": 2, "launched": "2026-10-03" }, { "slug": "k8s-deprecated-api-check", "name": "Will this manifest survive your next Kubernetes upgrade?", "url": "https://marisstella.app/k8s-deprecated-api-check/", "category": "CI checks & developer gates", "description": "Paste Kubernetes manifests and find every apiVersion and kind a Kubernetes release has removed, before an upgrade rejects them. Runs in your browser.", "pages": 4, "launched": "2026-09-17" }, { "slug": "k8s-pod-security-check", "name": "What are your Kubernetes manifests handing to the node?", "url": "https://marisstella.app/k8s-pod-security-check/", "category": "CI checks & developer gates", "description": "Paste your Kubernetes YAML and find risky pod security settings: privileged: true, hostNetwork, hostPath docker.sock, SYS_ADMIN capabilities, running as root, missing…", "pages": 2, "launched": "2026-10-03" }, { "slug": "k8s-requests-rightsizer", "name": "Are your Kubernetes requests wasting money?", "url": "https://marisstella.app/k8s-requests-rightsizer/", "category": "CI checks & developer gates", "description": "Paste kubectl top output, kubectl get pods JSON or a simple CSV and see which containers request far more CPU and memory than they use, a recommended request with headroom, the…", "pages": 2, "launched": "2026-10-02" }, { "slug": "k8s-resource-limits-check", "name": "Will this container take down its whole node?", "url": "https://marisstella.app/k8s-resource-limits-check/", "category": "CI checks & developer gates", "description": "Paste Kubernetes manifests to find containers missing memory limits, CPU requests or ephemeral-storage limits that let one pod starve a node. Runs in your browser.", "pages": 4, "launched": "2026-09-24" }, { "slug": "k8s-rollout-safety-check", "name": "Will your Kubernetes rollout drop live requests?", "url": "https://marisstella.app/k8s-rollout-safety-check/", "category": "CI checks & developer gates", "description": "Paste a Kubernetes Deployment YAML and find every reason a rolling update can drop live requests: no readinessProbe, no preStop hook, a grace period shorter than the drain…", "pages": 3, "launched": "2026-09-11" }, { "slug": "kdp-royalty-calculator", "name": "KDP royalty calculator: KU vs going wide", "url": "https://marisstella.app/kdp-royalty-calculator/", "category": "Marketplace seller tools", "description": "See what a Kindle book keeps on KDP exclusive (paid sales plus Kindle Unlimited page reads) versus going wide. Paperback print cost, 70% vs 35% ebook, and Ingram wholesale are…", "pages": 5, "launched": "2026-09-07" }, { "slug": "kdp-royalty-report-analyzer", "name": "KDP Royalty Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/kdp-royalty-report-analyzer/", "category": "Marketplace seller tools", "description": "Free KDP royalty report analyzer for self-published authors: drop in your royalty CSV and see net royalty per book, marketplace and royalty option, refund rates, Kindle Unlimited…", "pages": 1, "launched": "2026-09-29" }, { "slug": "kdp-royalty-to-journal", "name": "KDP royalty report to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/kdp-royalty-to-journal/", "category": "Marketplace seller tools", "description": "Turn a KDP royalty report into month-split journal entries by marketplace and format, with printing cost and tax withheld booked. Nothing leaves your device.", "pages": 1, "launched": "2026-10-06" }, { "slug": "kickstarter-fee-calculator", "name": "Kickstarter Fee Calculator", "url": "https://marisstella.app/kickstarter-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Kickstarter fee calculator. 5% platform fee plus per-pledge processing (3% + $0.20 standard, 5% + $0.05 under $10) -- see why more, smaller pledges keep less of the same…", "pages": 3, "launched": "2026-09-24" }, { "slug": "kids-birthday-party-package-profit-calculator", "name": "Kids Birthday Party Package Profit Calculator — true profit, margin and lowest price per party", "url": "https://marisstella.app/kids-birthday-party-package-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for trampoline parks, bounce gyms, play cafes and family entertainment centers.", "pages": 2, "launched": "2026-10-12" }, { "slug": "kitchen-tile-backsplash-bid-calculator", "name": "Kitchen Tile Backsplash Bid Calculator", "url": "https://marisstella.app/kitchen-tile-backsplash-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a kitchen tile backsplash from wall square feet, subway versus herringbone versus mosaic versus large-format, tile-only versus new-prep versus demo-and-replace…", "pages": 7, "launched": "2026-08-25" }, { "slug": "klaviyo-profile-csv-check", "name": "Klaviyo Profile CSV Check — free, private, in your browser", "url": "https://marisstella.app/klaviyo-profile-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Klaviyo profile import CSV checker: finds invalid and duplicate emails, phone numbers that are not E.164, rows with no identifier, zips and phones Excel damaged, bad…", "pages": 1, "launched": "2026-10-04" }, { "slug": "ko-fi-payout-to-journal", "name": "Ko-fi transactions to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/ko-fi-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Turn a Ko-fi transactions export into month-split journal entries. Nothing leaves your device.", "pages": 1, "launched": "2026-10-05" }, { "slug": "kombucha-brewery-profit-calculator", "name": "Kombucha brewery calculator: how many gallons a week to break even? Free, private", "url": "https://marisstella.app/kombucha-brewery-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free kombucha brewery profit calculator: fermenter capacity, batch cycle, wholesale and taproom prices, packaging, labour and rent become gallons a week, monthly profit…", "pages": 1, "launched": "2026-10-13" }, { "slug": "lambda-memory-rightsizer", "name": "Is your Lambda memory setting costing you money?", "url": "https://marisstella.app/lambda-memory-rightsizer/", "category": "CI checks & developer gates", "description": "Paste AWS Lambda CloudWatch REPORT lines and see peak memory against what you configured, duration percentiles, cold-start share, and the memory size that minimises cost without a…", "pages": 2, "launched": "2026-10-01" }, { "slug": "lambda-vs-fargate-cost-breakeven", "name": "Lambda or Fargate? Find your cost break-even", "url": "https://marisstella.app/lambda-vs-fargate-cost-breakeven/", "category": "CI checks & developer gates", "description": "Enter requests per month, duration, memory and concurrency and compare the monthly cost of AWS Lambda, Google Cloud Run, AWS Fargate and EC2, plus the request volume where…", "pages": 2, "launched": "2026-10-02" }, { "slug": "land-survey-bid-calculator", "name": "Land Survey Bid Calculator", "url": "https://marisstella.app/land-survey-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free bid calculator for independent licensed land surveyors: price a boundary, topographic, or ALTA/NSPS survey by corners located vs. set, terrain, record research, crew and…", "pages": 3, "launched": "2026-09-16" }, { "slug": "landlord-repair-or-replace-planner", "name": "Landlord Repair-or-Replace Planner — free, private, in your browser", "url": "https://marisstella.app/landlord-repair-or-replace-planner/", "category": "Back-office money & contracts", "description": "Free tool for landlords and homeowners. Enter a water heater, furnace, AC, roof or appliance with its age, repair quote and replacement cost to see whether repairing or replacing…", "pages": 1, "launched": "2026-10-01" }, { "slug": "landscape-lighting-bid-calculator", "name": "Landscape Lighting Bid Calculator", "url": "https://marisstella.app/landscape-lighting-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price low-voltage landscape lighting from fixture mix, fixtures-only versus new-system versus existing-add-on, trench and soil, transformer size, and extras — plus the walk-away…", "pages": 4, "launched": "2026-08-26" }, { "slug": "laser-cutting-engraving-job-price-calculator", "name": "Laser Cutting & Engraving Job Price Calculator — free, private", "url": "https://marisstella.app/laser-cutting-engraving-job-price-calculator/", "category": "Service business pricing & quotes", "description": "Free laser cutting and engraving price calculator: enter the piece size, cut path, engraved area, sheet material, nesting, laser time, labour and setup, and get a price per piece…", "pages": 1, "launched": "2026-10-10" }, { "slug": "lash-studio-profit-calculator", "name": "Lash Studio Profit Calculator — price lash sets and fills to hit your hourly", "url": "https://marisstella.app/lash-studio-profit-calculator/", "category": "Marketplace seller tools", "description": "Free lash studio pricing calculator. Enter your price list, supplies, card fees, no-shows and overhead; it shows profit per chair hour for every set and fill, the price that hits…", "pages": 2, "launched": "2026-10-11" }, { "slug": "lash-studio-service-profit-calculator", "name": "Lash studio service profit calculator", "url": "https://marisstella.app/lash-studio-service-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free lash studio pricing calculator: enter price, chair time, supplies, no-shows, card fees and studio rent to see what each lash service takes home per hour, compare full sets…", "pages": 1, "launched": "2026-10-09" }, { "slug": "late-invoice-collections-kit", "name": "Late Invoice Collections Kit — free, private, in your browser", "url": "https://marisstella.app/late-invoice-collections-kit/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free tool for freelancers and small agencies with an overdue invoice: late fee and interest today and on later dates, four ready-to-copy letters (reminder, firm notice, final…", "pages": 1, "launched": "2026-09-29" }, { "slug": "laundromat-acquisition-offer-calculator", "name": "Laundromat Acquisition Offer Calculator — what to pay and what the loan can carry", "url": "https://marisstella.app/laundromat-acquisition-offer-calculator/", "category": "Service business pricing & quotes", "description": "Free laundromat valuation calculator. Enter revenue and costs, a manager and machine reserve, and your loan terms; it shows adjusted cash flow, the most to offer, debt coverage…", "pages": 2, "launched": "2026-10-11" }, { "slug": "laundromat-machine-payback-calculator", "name": "Laundromat Machine Payback Calculator — free, private, in your browser", "url": "https://marisstella.app/laundromat-machine-payback-calculator/", "category": "Service business pricing & quotes", "description": "Laundromat machine payback calculator for owners and buyers. Enter washers and dryers with price per cycle, turns per day, utilities and installed cost to see payback months, the…", "pages": 1, "launched": "2026-10-01" }, { "slug": "law-firm-realization-rate-calculator", "name": "Law Firm Realization Rate Calculator — free, private", "url": "https://marisstella.app/law-firm-realization-rate-calculator/", "category": "Service business pricing & quotes", "description": "Free law firm realization calculator: realization, collection rate and yield per lawyer, dollars lost before and after billing, lockup days, and what a point of realization is…", "pages": 1, "launched": "2026-10-05" }, { "slug": "lawn-aeration-overseeding-bid-calculator", "name": "Lawn Aeration and Overseeding Bid Calculator — true profit, margin and lowest quote per job", "url": "https://marisstella.app/lawn-aeration-overseeding-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Free bid calculator for lawn-care operators pricing aeration and overseeding: true profit, margin and the lowest quote that hits your target margin.", "pages": 2, "launched": "2026-10-12" }, { "slug": "lawn-care-bid-calculator", "name": "Lawn Care Bid Calculator", "url": "https://marisstella.app/lawn-care-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a lawn care route stop from production rates: turf, beds, edging, travel time, fuel, dump, and margin — plus price per visit, in-season monthly, honest annual, and the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "lcl-vs-fcl-container-calculator", "name": "LCL vs FCL Calculator — free, private", "url": "https://marisstella.app/lcl-vs-fcl-container-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free LCL vs FCL calculator for importers: enter your CBM, weight and the quotes you have, and see whether a shared container or a 20ft, 40ft or 40ft high-cube is cheaper, the…", "pages": 1, "launched": "2026-10-10" }, { "slug": "lead-response-time-analyzer", "name": "Lead Response Time Analyzer — free, private, in your browser", "url": "https://marisstella.app/lead-response-time-analyzer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free tool for home-service and other lead-driven businesses. Paste your leads with minutes to first reply and won or lost to see win rate by response time and the jobs and revenue…", "pages": 1, "launched": "2026-09-30" }, { "slug": "league-schedule-generator", "name": "League Schedule Generator — free, private, in your browser", "url": "https://marisstella.app/league-schedule-generator/", "category": "Service business pricing & quotes", "description": "Free round robin schedule generator. Paste your team names and get a fair league schedule with real dates, balanced home and away, courts and time slots shared evenly, blackout…", "pages": 28, "launched": "2026-10-01" }, { "slug": "lemonsqueezy-payout-to-journal", "name": "Lemon Squeezy earnings export to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/lemonsqueezy-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Lemon Squeezy payout to journal converter: proves the orders add up to your payout, splits product sales income, shipping, tax you collected, Lemon Squeezy platform and…", "pages": 1, "launched": "2026-10-05" }, { "slug": "liability-audit", "name": "What in your app could cost you a fine, a chargeback or a surprise bill?", "url": "https://marisstella.app/liability-audit/", "category": "CI checks & developer gates", "description": "A free, local scan for consent, auto-renewal, disclosure, licence, leaked-key and runaway-spend problems, with the law or rule behind each finding. Observations, not legal advice.", "pages": 2, "launched": "2026-10-16" }, { "slug": "license-compat-check", "name": "Can you ship these dependencies under your license?", "url": "https://marisstella.app/license-compat-check/", "category": "CI checks & developer gates", "description": "Paste your dependency licenses, say how you ship (closed-source app, SaaS, internal tool, or an open-source license) and see which dependencies conflict — GPL in a proprietary…", "pages": 2, "launched": "2026-10-01" }, { "slug": "license-drift-check", "name": "Did a dependency's license just change under you?", "url": "https://marisstella.app/license-drift-check/", "category": "CI checks & developer gates", "description": "Paste two snapshots of your dependency tree's declared licenses (npm, pip, cargo, go) and find out in one click which packages changed license since the last one — the change…", "pages": 4, "launched": "2026-09-07" }, { "slug": "license-keeper", "name": "License Keeper — license keys for Stripe sellers, self-hosted", "url": "https://marisstella.app/license-keeper/", "category": "Self-hosted business apps", "description": "Sell desktop apps, plugins and CLI tools with Stripe and issue signed license keys automatically. Generate a key pair, sign a test license and verify it right in your browser…", "pages": 1, "launched": "2026-10-15" }, { "slug": "lien-waiver-checker", "name": "Check a lien waiver before you sign it — free, private", "url": "https://marisstella.app/lien-waiver-checker/", "category": "Service business pricing & quotes", "description": "Free lien waiver checker for contractors and suppliers: paste the waiver you were sent and see what to fix before you sign, such as an unconditional waiver before the check…", "pages": 1, "launched": "2026-10-06" }, { "slug": "like-kind-exchange-1031-calculator", "name": "1031 Exchange Calculator — free", "url": "https://marisstella.app/like-kind-exchange-1031-calculator/", "category": "Back-office money & contracts", "description": "Free 1031 like-kind exchange calculator for real estate investors: your 45-day identification and 180-day closing dates, cash and mortgage boot, recognized versus deferred gain…", "pages": 1, "launched": "2026-09-29" }, { "slug": "link-keeper", "name": "Link Keeper — self-hosted link shortener with click stats", "url": "https://marisstella.app/link-keeper/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to Bitly, Dub and Rebrandly: your own short domain, UTM-tagged campaign links, iOS/Android app routing, expiry, click limits and privacy-friendly…", "pages": 1, "launched": "2026-10-15" }, { "slug": "liquidation-pallet-bid-calculator", "name": "Liquidation Pallet Bid Calculator — free, private, in your browser", "url": "https://marisstella.app/liquidation-pallet-bid-calculator/", "category": "Marketplace seller tools", "description": "Free liquidation pallet bid calculator. Paste a manifest to get the maximum bid for a chance of loss you accept, with a Monte Carlo simulation of recovery rate, sell-through and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "listen-and-learn-audio", "name": "Listen & Learn Audio", "url": "https://marisstella.app/listen-and-learn-audio/", "category": "Learning & practice", "description": "Short graded stories read aloud in Spanish, French, German and Italian, each line followed by English. Press play and listen while you walk or commute. Free in your browser, plus…", "pages": 1, "launched": "2026-10-19" }, { "slug": "llm-api-pricing-calculator", "name": "LLM API Pricing Calculator", "url": "https://marisstella.app/llm-api-pricing-calculator/", "category": "CI checks & developer gates", "description": "Compare the monthly dollar cost of calling different LLM APIs (Claude, GPT, Gemini, or a custom provider) for your own workload -- modelling fresh input, cached input, and output…", "pages": 3, "launched": "2026-09-24" }, { "slug": "llm-call-cost-scan", "name": "Which LLM calls in your code are quietly costing you money?", "url": "https://marisstella.app/llm-call-cost-scan/", "category": "CI checks & developer gates", "description": "Paste your code and see every OpenAI, Anthropic and Gemini call with no max-tokens cap, inside a loop, on a premium model, or using a retired model name, plus a monthly cost…", "pages": 2, "launched": "2026-10-01" }, { "slug": "llm-output-regression-diff", "name": "Did the new model break your prompts?", "url": "https://marisstella.app/llm-output-regression-diff/", "category": "CI checks & developer gates", "description": "Paste your saved LLM outputs from before and after a model swap or prompt edit and see which cases broke: invalid JSON, lost keys, new refusals, truncation, lost numbers. Free…", "pages": 2, "launched": "2026-10-03" }, { "slug": "llm-spend-guard", "name": "Would a spend cap have stopped your runaway LLM bill?", "url": "https://marisstella.app/llm-spend-guard/", "category": "CI checks & developer gates", "description": "Stop a runaway OpenAI or Anthropic bill before it happens: hard per-user, per-feature and per-run dollar caps, an output-token ceiling, and circuit breakers that trip on agent…", "pages": 2, "launched": "2026-10-16" }, { "slug": "llm-usage-log-analyzer", "name": "LLM Usage Log Analyzer", "url": "https://marisstella.app/llm-usage-log-analyzer/", "category": "CI checks & developer gates", "description": "Paste an LLM API usage log (JSONL, JSON or CSV) and see spend by model, feature and day, your cache hit rate, a 30-day run rate, and which levers -- caching, batch, a cheaper…", "pages": 1, "launched": "2026-09-30" }, { "slug": "llms-txt-generator", "name": "Build a valid llms.txt for your site, free", "url": "https://marisstella.app/llms-txt-generator/", "category": "CI checks & developer gates", "description": "Paste your site's page list, a sitemap.xml, or a Markdown docs tree and get a valid llms.txt file — the emerging llmstxt.org convention that gives AI assistants a structured map…", "pages": 4, "launched": "2026-09-11" }, { "slug": "lockfile-license-check", "name": "Is anything in your node_modules GPL?", "url": "https://marisstella.app/lockfile-license-check/", "category": "CI checks & developer gates", "description": "Paste your package-lock.json and see every dependency licence: copyleft (GPL, AGPL), unlicensed and unknown packages flagged first. Free npm license checker, runs in your browser…", "pages": 2, "launched": "2026-10-03" }, { "slug": "locksmith-bid-calculator", "name": "Locksmith Bid Calculator", "url": "https://marisstella.app/locksmith-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Free calculator for mobile locksmiths: price one service call — lockout, rekey, lock install, or fob programming — with the after-hours premium and minimum service charge built…", "pages": 6, "launched": "2026-09-06" }, { "slug": "locum-tenens-vs-employed-calculator", "name": "Locum Tenens vs Employed Calculator — free, private, in your browser", "url": "https://marisstella.app/locum-tenens-vs-employed-calculator/", "category": "Back-office money & contracts", "description": "Free locum tenens vs employed calculator for physicians, NPs, PAs and CRNAs. Compare a 1099 locum contract with a W-2 offer: take-home after federal tax, self-employment tax…", "pages": 1, "launched": "2026-09-30" }, { "slug": "log-management-pricing-calculator", "name": "What will logging cost at your GB-per-month volume, and who is cheapest?", "url": "https://marisstella.app/log-management-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly log volume (GB ingested) and see what Datadog Logs, Grafana Cloud Logs, Axiom, Better Stack and Papertrail charge, the 12-month spend under your growth rate…", "pages": 2, "launched": "2026-10-03" }, { "slug": "lot-split-calculator", "name": "Sell the lot whole or split it?", "url": "https://marisstella.app/lot-split-calculator/", "category": "Back-office money & contracts", "description": "Paste the items in a bulk lot and a whole-lot offer and see whether listing item by item earns more after fees, shipping and your time, which lines to list and which to sell on in…", "pages": 2, "launched": "2026-10-02" }, { "slug": "ltl-freight-class-estimator", "name": "LTL Freight Class Estimator", "url": "https://marisstella.app/ltl-freight-class-estimator/", "category": "Logistics, freight & cloud cost", "description": "Estimate LTL freight class from pallet dimensions, weight, and piece count — then see the packed height that reaches the next class down, and the height at which a carrier…", "pages": 4, "launched": "2026-08-26" }, { "slug": "lumper-fee-reimbursement-calculator", "name": "Lumper Fee Reimbursement Calculator — free, private", "url": "https://marisstella.app/lumper-fee-reimbursement-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free lumper fee calculator for truckers and owner-operators: enter the lumper receipt, the dock wait and each way the broker might pay you back, and see what you are really out…", "pages": 1, "launched": "2026-10-10" }, { "slug": "mailchimp-audience-csv-check", "name": "Mailchimp Audience CSV Check — free, private, in your browser", "url": "https://marisstella.app/mailchimp-audience-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Mailchimp audience import CSV checker: finds invalid and duplicate emails, rows with no email, unquoted commas in Tags, birthdays with a year or mixed DD/MM and MM/DD, mixed…", "pages": 1, "launched": "2026-10-04" }, { "slug": "maple-syrup-sugarbush-profit-calculator", "name": "Maple syrup profit per tap and per hour, with a reverse osmosis payback — free, private", "url": "https://marisstella.app/maple-syrup-sugarbush-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free maple syrup profit calculator: taps and sap to syrup by the rule of 86, then fuel, supplies, equipment, fees and labour, profit per tap and per hour, poor and good seasons…", "pages": 1, "launched": "2026-10-07" }, { "slug": "market-event-picker", "name": "Which markets and festivals should you work?", "url": "https://marisstella.app/market-event-picker/", "category": "Back-office money & contracts", "description": "Paste the markets, fairs and festivals you could work and get the exact set that earns the most net profit after booth fees, travel, crew hours and cost of goods, with the reason…", "pages": 2, "launched": "2026-10-02" }, { "slug": "market-garden-bed-planner", "name": "Market Garden Bed Planner — free, private, in your browser", "url": "https://marisstella.app/market-garden-bed-planner/", "category": "Back-office money & contracts", "description": "Market garden bed planner for small vegetable and flower farms. Enter your crops, beds, season and labor and get the crop mix that earns the most, what one more bed-foot, labor…", "pages": 1, "launched": "2026-10-01" }, { "slug": "marketplace-fee-compare", "name": "Which marketplace nets the most on this item?", "url": "https://marisstella.app/marketplace-fee-compare/", "category": "Marketplace seller tools", "description": "Free side-by-side comparison of eBay, Etsy, Amazon, Walmart, TikTok Shop, Mercari, Depop, Poshmark, Facebook Marketplace, and your own Shopify store on one item. Enter the price…", "pages": 6, "launched": "2026-08-27" }, { "slug": "massage-therapist-profit-calculator", "name": "Massage Therapist Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/massage-therapist-profit-calculator/", "category": "Service business pricing & quotes", "description": "Massage therapist profit calculator for solo therapists and clinic owners. Enter session types, minutes, supplies, no-shows and sessions per week to see profit per hour after…", "pages": 1, "launched": "2026-10-01" }, { "slug": "matrix-profile-explorer", "name": "Matrix Profile Explorer — find repeated patterns and anomalies in a time series", "url": "https://marisstella.app/matrix-profile-explorer/", "category": "Research algorithms & ML", "description": "Free matrix profile tool for time series anomaly detection and motif discovery. Paste or upload a CSV and find repeated patterns (motifs) and the most unusual stretches (discords)…", "pages": 1, "launched": "2026-10-20" }, { "slug": "mcp-config-risk-check", "name": "MCP Config Risk Check", "url": "https://marisstella.app/mcp-config-risk-check/", "category": "CI checks & developer gates", "description": "Paste an mcp.json, claude_desktop_config.json, or any MCP server config and get every risky pattern flagged: servers granted broad filesystem/shell access, API keys hardcoded…", "pages": 4, "launched": "2026-09-24" }, { "slug": "mcp-supply-chain-watch", "name": "MCP Supply-Chain Watch — compare MCP tool manifests for drift", "url": "https://marisstella.app/mcp-supply-chain-watch/", "category": "Compliance checks & evidence records", "description": "Free MCP tool manifest drift checker: paste two locally captured Model Context Protocol server manifests and see which tools were added, removed, or had their description or…", "pages": 4, "launched": "2026-08-26" }, { "slug": "mechanics-lien-deadline-calculator", "name": "Mechanics Lien Deadline Calculator — free, 5 states", "url": "https://marisstella.app/mechanics-lien-deadline-calculator/", "category": "Compliance checks & evidence records", "description": "Free calculator for the preliminary notice and lien filing deadlines a subcontractor or supplier faces in California, Texas, Florida, Arizona, and Washington. Enter your first and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "med-spa-treatment-profit-calculator", "name": "Med Spa Treatment Profit Calculator — free", "url": "https://marisstella.app/med-spa-treatment-profit-calculator/", "category": "Back-office money & contracts", "description": "Free med spa treatment profit calculator: contribution margin per treatment after product, card fees, provider time and room overhead, ranked by profit per room hour, with the…", "pages": 1, "launched": "2026-10-06" }, { "slug": "medicaid-lookback-penalty-calculator", "name": "Medicaid look-back penalty calculator: what do your gifts cost? Free, private", "url": "https://marisstella.app/medicaid-lookback-penalty-calculator/", "category": "Service business pricing & quotes", "description": "Free Medicaid look-back calculator: list gifts and transfers, see which fall in the 60-month window, the penalty period in months and days, the care cost it leaves you to cover…", "pages": 1, "launched": "2026-10-06" }, { "slug": "medical-bill-error-checker", "name": "Medical Bill Error Checker — free, private, in your browser", "url": "https://marisstella.app/medical-bill-error-checker/", "category": "Back-office money & contracts", "description": "Free tool for patients: paste or drop your itemized medical bill and see possible duplicate charges, codes billed twice in a day, unbundled lab panels, two visit levels on one…", "pages": 1, "launched": "2026-09-29" }, { "slug": "medical-billing-pricing-calculator", "name": "Medical billing pricing calculator: percent vs per-claim vs flat", "url": "https://marisstella.app/medical-billing-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free medical billing pricing calculator: compare percent of collections, per-claim and flat monthly fees against your cost to serve a practice. See margin, break-even claim…", "pages": 1, "launched": "2026-10-09" }, { "slug": "medical-courier-route-margin", "name": "Medical Courier Route Margin Calculator", "url": "https://marisstella.app/medical-courier-route-margin/", "category": "Logistics, freight & cloud cost", "description": "Free medical courier route calculator: margin per stop and vehicle-hour after paid wait, deadhead and overhead — plus the per-stop rate to quote.", "pages": 4, "launched": "2026-08-26" }, { "slug": "medicare-irmaa-cliff-calculator", "name": "Medicare IRMAA Cliff Calculator — free, 2026", "url": "https://marisstella.app/medicare-irmaa-cliff-calculator/", "category": "Back-office money & contracts", "description": "Free 2026 Medicare IRMAA calculator: enter your MAGI from two years ago to see your Part B and Part D tier, the surcharge, how many dollars until the next cliff, how much Roth…", "pages": 1, "launched": "2026-09-29" }, { "slug": "meeting-action-items", "name": "Turn meeting notes into owned, dated action items", "url": "https://marisstella.app/meeting-action-items/", "category": "Creator & solo earner income", "description": "Paste meeting notes or a transcript and get action items with owner and due date, decisions and open questions, plus a follow-up email. Free, private, no upload.", "pages": 2, "launched": "2026-10-18" }, { "slug": "mega-backdoor-roth-calculator", "name": "Mega Backdoor Roth 401(k) Calculator", "url": "https://marisstella.app/mega-backdoor-roth-calculator/", "category": "Back-office money & contracts", "description": "Free browser calculator for the mega backdoor Roth 401(k) strategy: enter your YTD elective deferral, employer contributions, and after-tax contributions and get your remaining…", "pages": 3, "launched": "2026-09-24" }, { "slug": "menu-engineering-calculator", "name": "Menu Engineering Calculator", "url": "https://marisstella.app/menu-engineering-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free menu engineering calculator for independent restaurants: enter each dish's plate food cost, menu price and units sold to classify it as a star, plowhorse, puzzle or dog, see…", "pages": 5, "launched": "2026-09-07" }, { "slug": "mercari-fee-calculator", "name": "Mercari Fee Calculator", "url": "https://marisstella.app/mercari-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Mercari seller fee calculator for the current schedule (10% on item price + buyer-paid shipping, effective Jan 6 2025) and the legacy pre-2025 schedule (10% on item price…", "pages": 4, "launched": "2026-09-23" }, { "slug": "merchant-cash-advance-true-cost-calculator", "name": "Merchant Cash Advance True Cost Calculator — free, private, in your browser", "url": "https://marisstella.app/merchant-cash-advance-true-cost-calculator/", "category": "Back-office money & contracts", "description": "Free merchant cash advance calculator. Turn a factor rate and daily or weekly payments into the annualised cost of the money you actually receive, see what early payoff really…", "pages": 1, "launched": "2026-09-30" }, { "slug": "merchant-feed-check", "name": "Will this product feed get items disapproved?", "url": "https://marisstella.app/merchant-feed-check/", "category": "CI checks & developer gates", "description": "Paste a Google Merchant Center or Meta Catalog feed to find missing fields, bad GTINs and malformed prices before products are disapproved. Runs in your browser.", "pages": 4, "launched": "2026-09-10" }, { "slug": "merchant-of-record-fee-calculator", "name": "Stripe or a merchant of record: what do you keep at your monthly revenue?", "url": "https://marisstella.app/merchant-of-record-fee-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly software revenue and average sale price and see what Stripe, Stripe Tax, Paddle, Lemon Squeezy and Polar take, your net payout, 12-month totals, and the revenue…", "pages": 2, "launched": "2026-10-03" }, { "slug": "meta-ads-fatigue-analyzer", "name": "Meta Ads Fatigue Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/meta-ads-fatigue-analyzer/", "category": "Back-office money & contracts", "description": "Free Meta Ads fatigue analyzer: drop in your Ads Manager ad-level CSV and see cost per result, ROAS and CTR per ad, which creatives show fatigue signals, how much spend produced…", "pages": 1, "launched": "2026-09-29" }, { "slug": "meta-catalog-csv-check", "name": "Meta Catalog CSV Check — free, private, in your browser", "url": "https://marisstella.app/meta-catalog-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Meta catalog feed CSV checker for Commerce Manager: finds semicolon or UTF-16 files, missing required columns, duplicate ids, prices without a currency, bad sale prices…", "pages": 1, "launched": "2026-10-05" }, { "slug": "metal-roof-bid-calculator", "name": "Metal Roof Bid Calculator", "url": "https://marisstella.app/metal-roof-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a residential standing-seam or exposed-fastener metal roof from the panel squares a per-square special cannot see, the tear-off, the stories, and the trim — plus walk-away…", "pages": 4, "launched": "2026-08-26" }, { "slug": "meter-keeper", "name": "Meter Keeper — self-hosted usage metering for Stripe", "url": "https://marisstella.app/meter-keeper/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to Lago, Orb and Metronome for small SaaS: send usage events to your own server, get exact per-customer usage, tiered invoice previews, hard-limit…", "pages": 1, "launched": "2026-10-15" }, { "slug": "microgreens-tray-planner", "name": "Microgreens Tray Planner — What to Seed, Rack Space and the Best Crop Mix", "url": "https://marisstella.app/microgreens-tray-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free planner for microgreens growers: what to seed on which day for your harvest days, how many rack spaces the busiest weekday needs, which crop earns the most per rack space…", "pages": 2, "launched": "2026-10-06" }, { "slug": "midterm-rental-calculator", "name": "Mid-term rental vs long-term lease vs Airbnb — free calculator", "url": "https://marisstella.app/midterm-rental-calculator/", "category": "Marketplace seller tools", "description": "Free mid-term rental calculator: compare a furnished 30-day-plus rental with a long-term lease and with Airbnb-style nightly renting. See the monthly rate, empty days and…", "pages": 1, "launched": "2026-10-07" }, { "slug": "mileage-deduction-calculator", "name": "Mileage Deduction Calculator — free, 2026", "url": "https://marisstella.app/mileage-deduction-calculator/", "category": "Creator & solo earner income", "description": "Free 2026 business mileage deduction calculator for the self-employed: prices your miles at the IRS's split-year rates (72.5 cents through June 30, 76 cents from July 1) and…", "pages": 1, "launched": "2026-10-09" }, { "slug": "mileage-deduction-method-calculator", "name": "Mileage Deduction Method Calculator — free, 2026", "url": "https://marisstella.app/mileage-deduction-method-calculator/", "category": "Back-office money & contracts", "description": "Free calculator comparing the 2026 IRS standard mileage rate (72.5 cents per mile through June 30, 76 cents from July 1) with actual vehicle expenses for a self-employed business…", "pages": 1, "launched": "2026-09-29" }, { "slug": "mileage-log", "name": "Mileage Log — free, private, works offline", "url": "https://marisstella.app/mileage-log/", "category": "Back-office money & contracts", "description": "Free mileage log for self-employed drivers and contractors: log trips or track with GPS, price them at the IRS standard rate by date (the 2026 rate changed July 1), check the log…", "pages": 2, "launched": "2026-09-29" }, { "slug": "mini-golf-course-profit-calculator", "name": "Mini-golf course profit calculator: does the course pay for itself? Free, private", "url": "https://marisstella.app/mini-golf-course-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free pro forma for a mini-golf, putt-putt or small family fun center: build cost per hole and shared costs, rounds per day and price by season, parties, concessions and arcade…", "pages": 1, "launched": "2026-10-12" }, { "slug": "mini-split-bid-calculator", "name": "Mini-Split Install Bid Calculator", "url": "https://marisstella.app/mini-split-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a ductless mini-split install from indoor heads, line-set extras, story height, electrical extras, and margin — then see price per head, crew hours, and the walk-away number…", "pages": 4, "launched": "2026-08-26" }, { "slug": "mobile-bartender-event-quote", "name": "Mobile Bartender Event Quote: price a bar service job and check the ask", "url": "https://marisstella.app/mobile-bartender-event-quote/", "category": "Restaurant, bar & food truck pricing", "description": "Price a mobile bar or bartending event: bartenders needed, drinks, staffing with call minimums, supplies and travel, your walk-away floor, price per guest, and whether a client's…", "pages": 2, "launched": "2026-10-03" }, { "slug": "mobile-detailing-bid-calculator", "name": "Mobile Detailing Bid Calculator", "url": "https://marisstella.app/mobile-detailing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free mobile detailing price calculator: include travel, labor, supplies, overhead, and card fees to find your break-even and target-margin quote.", "pages": 5, "launched": "2026-08-26" }, { "slug": "mobile-detailing-day-planner", "name": "Which detailing jobs should you take today? Free day planner", "url": "https://marisstella.app/mobile-detailing-day-planner/", "category": "Service business pricing & quotes", "description": "Free day planner for mobile car detailers. List the jobs with price, time on site, drive and supplies; it picks the most profitable set that fits your hours, shows take-home per…", "pages": 1, "launched": "2026-10-07" }, { "slug": "mobile-home-park-valuation-calculator", "name": "What is a mobile home park worth, and what is a lot rent increase worth? Free calculator", "url": "https://marisstella.app/mobile-home-park-valuation-calculator/", "category": "Creator & solo earner income", "description": "Free mobile home park valuation calculator: type lots, occupancy, lot rent and expenses from a T-12 to see NOI, value at your cap rate, implied cap rate on the asking price, DSCR…", "pages": 1, "launched": "2026-10-08" }, { "slug": "mobile-mechanic-visit-pricing-calculator", "name": "Mobile mechanic pricing calculator: what to charge per job and per stop. Free, private", "url": "https://marisstella.app/mobile-mechanic-visit-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free pricing calculator for mobile mechanics: drive time, minutes per job, materials, fixed costs and the income you want become a trip charge plus a per-job rate, with a table by…", "pages": 1, "launched": "2026-10-06" }, { "slug": "mobile-oil-change-route-profit-calculator", "name": "Mobile Oil Change Route Profit Calculator — free, private", "url": "https://marisstella.app/mobile-oil-change-route-profit-calculator/", "category": "Service business pricing & quotes", "description": "Find out what a mobile oil change really earns after the drive, the oil and filter, the used-oil disposal and the no-shows, and whether solo, a franchise or a job pays the route…", "pages": 1, "launched": "2026-10-11" }, { "slug": "mobile-phlebotomy-route-profit-calculator", "name": "Mobile Phlebotomy Route Profit Calculator — free, private", "url": "https://marisstella.app/mobile-phlebotomy-route-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free mobile phlebotomy calculator: enter draws per week by type, fees, on-site and drive minutes, supplies, failed trips and fixed costs, and see profit per draw and per working…", "pages": 1, "launched": "2026-10-11" }, { "slug": "mobile-signing-agent-day-picker", "name": "Which signings should a mobile notary or loan signing agent take today?", "url": "https://marisstella.app/mobile-signing-agent-day-picker/", "category": "Service business pricing & quotes", "description": "Paste the day's offered loan signings and notary appointments and get the most profitable set and order for one mobile notary or signing agent, with appointment windows, drive…", "pages": 2, "launched": "2026-10-02" }, { "slug": "mobile-tire-van-job-picker", "name": "Which jobs should a one-van mobile tire business run today?", "url": "https://marisstella.app/mobile-tire-van-job-picker/", "category": "Logistics, freight & cloud cost", "description": "Paste the day's requested mobile tire and roadside jobs and get the most profitable set and order for one van, with time windows, drive cost and a price for every job it turns…", "pages": 2, "launched": "2026-10-02" }, { "slug": "mobile-vet-house-call-fee-calculator", "name": "Mobile Vet House-Call Fee Calculator — free, private", "url": "https://marisstella.app/mobile-vet-house-call-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for mobile veterinarians: what a house call really costs after drive time, mileage, supplies, assistant time and no-shows, the visit fee and travel-zone surcharge…", "pages": 1, "launched": "2026-10-10" }, { "slug": "mobile-welding-job-price-calculator", "name": "What should I charge for a mobile welding job? Free calculator", "url": "https://marisstella.app/mobile-welding-job-price-calculator/", "category": "Service business pricing & quotes", "description": "Free mobile welding job price calculator: on-site and drive hours, pay, rig, consumables, truck miles, materials and target margin in; a job price, travel-distance table, overrun…", "pages": 1, "launched": "2026-10-08" }, { "slug": "mold-remediation-bid-calculator", "name": "Mold Remediation Bid Calculator", "url": "https://marisstella.app/mold-remediation-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a mold remediation job from extra containment zones, demolition, HEPA and dehumidifier days, HVAC cleaning, dumpster, occupied-home access, and third-party clearance — not a…", "pages": 4, "launched": "2026-08-26" }, { "slug": "mortgage-escrow-analysis-checker", "name": "Mortgage Escrow Analysis Checker — free, private, in your browser", "url": "https://marisstella.app/mortgage-escrow-analysis-checker/", "category": "Back-office money & contracts", "description": "Free tool for homeowners: enter your tax and insurance bills and the numbers on your annual escrow statement, and see the payment they support, your shortage, the largest allowed…", "pages": 1, "launched": "2026-09-29" }, { "slug": "mortgage-extra-payment-vs-invest-calculator", "name": "Pay extra on your mortgage or invest? Free break-even calculator", "url": "https://marisstella.app/mortgage-extra-payment-vs-invest-calculator/", "category": "Creator & solo earner income", "description": "Free calculator: pay extra on your mortgage, invest the same money, or recast after a lump sum? See after-tax wealth at the end of the loan and the break-even investment return…", "pages": 1, "launched": "2026-10-08" }, { "slug": "mortgage-points-break-even-calculator", "name": "Are mortgage points worth it? Free calculator", "url": "https://marisstella.app/mortgage-points-break-even-calculator/", "category": "Creator & solo earner income", "description": "Free mortgage points calculator: break-even month, return on the points, how far ahead or behind you are when you sell or refinance, and the chance you finish ahead. Nothing…", "pages": 1, "launched": "2026-10-08" }, { "slug": "mosquito-control-program-pricing-calculator", "name": "Mosquito control program pricing calculator", "url": "https://marisstella.app/mosquito-control-program-pricing-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free mosquito control pricing calculator for barrier spray operators: type your product, labour, drive time and re-treat rate to see the minimum price per visit and per prepaid…", "pages": 1, "launched": "2026-10-09" }, { "slug": "moving-bid-calculator", "name": "Moving Company Bid Calculator", "url": "https://marisstella.app/moving-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a local moving job from inventory hours plus stairs, long carry, packing, and drive time — then see the walk-away price before you match a cheap bedroom-count quote.", "pages": 4, "launched": "2026-08-26" }, { "slug": "mrr-pulse", "name": "MRR Pulse — Stripe MRR and churn dashboard, self-hosted", "url": "https://marisstella.app/mrr-pulse/", "category": "Self-hosted business apps", "description": "See MRR, ARR, net revenue retention, logo churn and quick ratio from your Stripe subscriptions without paying a metrics service a share of your revenue. Paste a subscription…", "pages": 1, "launched": "2026-10-15" }, { "slug": "mrr-waterfall-calculator", "name": "MRR Waterfall Calculator", "url": "https://marisstella.app/mrr-waterfall-calculator/", "category": "Service business pricing & quotes", "description": "Break starting MRR into new, expansion, reactivation, contraction, and churned MRR, then get ending MRR, gross and net revenue retention, and your growth-to-loss quick ratio. Runs…", "pages": 2, "launched": "2026-09-25" }, { "slug": "mt940-statement-check", "name": "MT940 Statement Check — free, private, in your browser", "url": "https://marisstella.app/mt940-statement-check/", "category": "Compliance checks & evidence records", "description": "Free MT940 checker: finds why a SWIFT MT940 bank statement fails to import or does not balance (opening plus transactions versus closing, gaps between statements, bad :61: lines…", "pages": 1, "launched": "2026-10-05" }, { "slug": "mushroom-fruiting-room-planner", "name": "Mushroom farm planner: flushes, room capacity, cash and break-even — free, private", "url": "https://marisstella.app/mushroom-fruiting-room-planner/", "category": "Creator & solo earner income", "description": "Free planner for small mushroom farms: profit per block and per fruiting-room slot-week, how many flushes to run, how many blocks the room can carry, the cash you need before the…", "pages": 1, "launched": "2026-10-07" }, { "slug": "music-distribution-fee-calculator", "name": "Music Distribution Fee Calculator — free", "url": "https://marisstella.app/music-distribution-fee-calculator/", "category": "Marketplace seller tools", "description": "Free calculator comparing what an independent artist keeps on DistroKid, TuneCore, CD Baby, Amuse, RouteNote and UnitedMasters at their own release count and stream volume, with…", "pages": 1, "launched": "2026-10-05" }, { "slug": "music-lesson-break-even", "name": "Music Lesson Pricing Calculator", "url": "https://marisstella.app/music-lesson-break-even/", "category": "Back-office money & contracts", "description": "Free music lesson pricing calculator for independent teachers. Include cancellations, preparation, travel, studio costs, and target pay to find a sustainable lesson price.", "pages": 4, "launched": "2026-08-26" }, { "slug": "music-teacher-studio-profit-calculator", "name": "Music Teacher Studio Profit Calculator — free, private", "url": "https://marisstella.app/music-teacher-studio-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free music teacher calculator: real hourly rate after prep, travel and cancellations, and private vs school vs rented room.", "pages": 1, "launched": "2026-10-11" }, { "slug": "nacha-file-validator", "name": "NACHA File Validator — free, private, in your browser", "url": "https://marisstella.app/nacha-file-validator/", "category": "Back-office money & contracts", "description": "Free ACH file checker for payroll and vendor-payment files: finds bad record lengths, routing-number check digits, wrong entry hash and control totals, missing block padding and…", "pages": 1, "launched": "2026-10-04" }, { "slug": "nail-tech-booth-rent-calculator", "name": "Booth rent, commission or employee: what does a nail tech really take home per hour worked?", "url": "https://marisstella.app/nail-tech-booth-rent-calculator/", "category": "Service business pricing & quotes", "description": "Compare booth rent, commission and an hourly job for a nail tech: take-home per hour worked, break-even clients per week. Free, nothing is uploaded.", "pages": 2, "launched": "2026-10-03" }, { "slug": "nanny-tax-calculator", "name": "Nanny tax calculator", "url": "https://marisstella.app/nanny-tax-calculator/", "category": "Service business pricing & quotes", "description": "Free nanny tax calculator: the real yearly and hourly cost of a household employee with Social Security, Medicare, FUTA and state unemployment, plus a take-home-to-gross…", "pages": 1, "launched": "2026-10-08" }, { "slug": "nat-gateway-cost-advisor", "name": "Is your NAT gateway bill avoidable?", "url": "https://marisstella.app/nat-gateway-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your NAT gateway traffic per destination and get the monthly NAT cost, which AWS services should use a free S3/DynamoDB gateway endpoint or an interface endpoint, the net…", "pages": 2, "launched": "2026-10-02" }, { "slug": "neon-bill-estimator", "name": "What will your Neon bill be, and what cuts it most?", "url": "https://marisstella.app/neon-bill-estimator/", "category": "CI checks & developer gates", "description": "Estimate a monthly Neon serverless Postgres bill from your own usage (compute CU-hours, storage, restore history, branches, data transfer) at editable list prices, and see which…", "pages": 2, "launched": "2026-10-03" }, { "slug": "newsletter-sponsorship-rate-calculator", "name": "Newsletter Sponsorship Rate Calculator — free, no sign-up", "url": "https://marisstella.app/newsletter-sponsorship-rate-calculator/", "category": "Creator & solo earner income", "description": "Free newsletter sponsorship rate calculator. Enter your list size, open rate, and niche to get a price range for a dedicated send, primary placement, secondary placement, and…", "pages": 4, "launched": "2026-09-08" }, { "slug": "niit-calculator", "name": "NIIT calculator", "url": "https://marisstella.app/niit-calculator/", "category": "Service business pricing & quotes", "description": "Free net investment income tax (NIIT) calculator: your Form 8960 lines, how far you are over the $200,000 / $250,000 threshold, what an extra gain costs and whether splitting it…", "pages": 1, "launched": "2026-10-08" }, { "slug": "nis2-scope-checker", "name": "NIS2 scope checker: is your company an essential or important entity? Free, private", "url": "https://marisstella.app/nis2-scope-checker/", "category": "Compliance checks & evidence records", "description": "Free NIS2 scope checker: pick your sector and enter staff, turnover and balance sheet to see whether Directive (EU) 2022/2555 likely applies to you, as an essential or important…", "pages": 1, "launched": "2026-10-13" }, { "slug": "nl-zzp-tax-set-aside-calculator", "name": "Netherlands ZZP Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/nl-zzp-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free Dutch ZZP tax calculator: enter turnover and expenses to see Box 1 income tax, zelfstandigenaftrek, MKB-winstvrijstelling, Zvw and how much of every invoice to set aside…", "pages": 1, "launched": "2026-10-14" }, { "slug": "no-show-fee-calculator", "name": "No-Show & Cancellation Fee Calculator", "url": "https://marisstella.app/no-show-fee-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free calculator for personal trainers, salons, tutors, and therapists: work out a defensible no-show fee, see whether overbooking the empty chairs still beats collecting it, and…", "pages": 5, "launched": "2026-08-24" }, { "slug": "no-tax-on-tips-overtime-calculator", "name": "No Tax on Tips & Overtime Calculator — free 2026 deduction estimator", "url": "https://marisstella.app/no-tax-on-tips-overtime-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the federal 'no tax on tips' and 'no tax on overtime' deductions (2025-2028): applies the $25,000 tip cap, the $12,500/$25,000 overtime cap, and the shared…", "pages": 3, "launched": "2026-09-17" }, { "slug": "node-version-drift-check", "name": "Do your package.json, .nvmrc, Dockerfile and CI agree on Node.js?", "url": "https://marisstella.app/node-version-drift-check/", "category": "CI checks & developer gates", "description": "Paste package.json, .nvmrc, .tool-versions, a Dockerfile and a GitHub Actions workflow and see whether your Node.js versions drifted: a pin that breaks engines.node, majors that…", "pages": 3, "launched": "2026-10-12" }, { "slug": "notary-trip-quote", "name": "Mobile Notary & Loan Signing Fee Calculator", "url": "https://marisstella.app/notary-trip-quote/", "category": "Service business pricing & quotes", "description": "Price a mobile notary appointment from mileage, drive time, print pages, witnesses and waiting — then test a signing service's flat offer against what you actually earn per hour…", "pages": 4, "launched": "2026-08-26" }, { "slug": "npm-audit-triage", "name": "Which npm audit findings actually matter?", "url": "https://marisstella.app/npm-audit-triage/", "category": "CI checks & developer gates", "description": "Paste npm audit --json and your source imports: see which vulnerable packages your code actually imports, which are only reached through a dependency, and which are test-only…", "pages": 2, "launched": "2026-10-13" }, { "slug": "npm-deployment-evidence", "name": "npm Deployment Evidence", "url": "https://marisstella.app/npm-deployment-evidence/", "category": "Compliance checks & evidence records", "description": "Free, no-signup, no-upload tool that reads a package-lock.json in your browser and shows which npm dependencies reach your deployed app versus which are build- or test-only. Runs…", "pages": 3, "launched": "2026-08-26" }, { "slug": "npm-lifecycle-script-check", "name": "Did a dependency just start running code at install time?", "url": "https://marisstella.app/npm-lifecycle-script-check/", "category": "CI checks & developer gates", "description": "Paste your package-lock.json and see every package that runs a preinstall, install, postinstall, or prepare script at install time -- and, with an older lockfile, exactly which…", "pages": 4, "launched": "2026-09-07" }, { "slug": "npm-lockfile-duplicates-check", "name": "Why is node_modules installing the same package five times?", "url": "https://marisstella.app/npm-lockfile-duplicates-check/", "category": "CI checks & developer gates", "description": "Paste your package-lock.json and see every package installed at more than one version, who pulls each copy in, and which ones npm dedupe can remove. Free duplicate dependency…", "pages": 2, "launched": "2026-10-12" }, { "slug": "npm-provenance-check", "name": "Which of your npm dependencies lack a provenance attestation?", "url": "https://marisstella.app/npm-provenance-check/", "category": "CI checks & developer gates", "description": "Paste a package-lock.json or package list to see which npm dependencies have provenance attestations and which still rely on classic publish tokens.", "pages": 4, "launched": "2026-09-24" }, { "slug": "nsa-idr-offer-calculator", "name": "No Surprises Act IDR Offer Calculator — free, private, in your browser", "url": "https://marisstella.app/nsa-idr-offer-calculator/", "category": "Back-office money & contracts", "description": "No Surprises Act IDR offer calculator for out-of-network providers and billing teams. Enter billed charge, QPA and amount paid to see the offer with the best expected net, the win…", "pages": 1, "launched": "2026-10-01" }, { "slug": "nua-employer-stock-calculator", "name": "NUA or IRA rollover? Work out the tax on your employer stock — free, private", "url": "https://marisstella.app/nua-employer-stock-calculator/", "category": "Service business pricing & quotes", "description": "Free NUA calculator: compare taking employer stock out of your 401(k) with net unrealized appreciation treatment against rolling everything to an IRA, with the 10% additional tax…", "pages": 1, "launched": "2026-10-06" }, { "slug": "ny-llc-transparency-act-tracker", "name": "NY LLC Transparency Act Tracker", "url": "https://marisstella.app/ny-llc-transparency-act-tracker/", "category": "Compliance checks & evidence records", "description": "Free browser tool for New York LLCs: check whether your LLC likely owes a Beneficial Ownership Disclosure or an Attestation of Exemption under the NY LLC Transparency Act, see…", "pages": 3, "launched": "2026-09-17" }, { "slug": "nz-gst-registration-checker", "name": "New Zealand GST registration checker: do you have to register? Free, private", "url": "https://marisstella.app/nz-gst-registration-checker/", "category": "Back-office money & contracts", "description": "Free New Zealand GST registration checker: enter your last 12 months of sales to see whether taxable turnover has passed NZD 60,000, test your expected turnover, and get your…", "pages": 1, "launched": "2026-10-13" }, { "slug": "nz-sole-trader-tax-set-aside-calculator", "name": "New Zealand Self-Employed Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/nz-sole-trader-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free New Zealand self-employed tax calculator: enter income and expenses to see income tax, ACC earners' levy, optional student loan repayment and how much of every invoice to set…", "pages": 1, "launched": "2026-10-14" }, { "slug": "object-storage-pricing-calculator", "name": "What will object storage cost for your GB stored and GB served, and who is cheapest?", "url": "https://marisstella.app/object-storage-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter the GB you store and the GB you serve per month and see what Amazon S3, Cloudflare R2, Backblaze B2, Wasabi, DigitalOcean Spaces and Hetzner charge, the 12-month spend under…", "pages": 2, "launched": "2026-10-03" }, { "slug": "obsidian-plugin-review-check", "name": "Obsidian Plugin Review Checker", "url": "https://marisstella.app/obsidian-plugin-review-check/", "category": "CI checks & developer gates", "description": "Free, browser-local checker for Obsidian plugin developers: cross-checks manifest.json against versions.json, flags leftover sample-plugin template placeholder values, and scans…", "pages": 4, "launched": "2026-09-13" }, { "slug": "ofx-file-check", "name": "OFX File Check — free, private, in your browser", "url": "https://marisstella.app/ofx-file-check/", "category": "Compliance checks & evidence records", "description": "Free OFX and QFX file checker: finds the problems that make QuickBooks, Quicken, YNAB and Xero reject a bank or credit-card Web Connect file — bad header, unclosed tags, duplicate…", "pages": 1, "launched": "2026-10-05" }, { "slug": "oidc-trust-policy-check", "name": "GitHub Actions OIDC Trust Policy Checker", "url": "https://marisstella.app/oidc-trust-policy-check/", "category": "CI checks & developer gates", "description": "Free tool: paste an AWS IAM role trust policy and see whether its GitHub Actions OIDC conditions actually restrict which repository, branch or environment can assume the role.", "pages": 4, "launched": "2026-09-10" }, { "slug": "oil-gas-mineral-rights-offer-calculator", "name": "Is a mineral royalty buyout offer fair? Free calculator", "url": "https://marisstella.app/oil-gas-mineral-rights-offer-calculator/", "category": "Creator & solo earner income", "description": "Free mineral and oil and gas royalty buyout calculator: compare a lump-sum offer with the royalty checks you would keep receiving. Arps decline curve, present value at your…", "pages": 1, "launched": "2026-10-08" }, { "slug": "oncall-load-analyzer", "name": "On-Call Load Analyzer — free, private, paste-the-export", "url": "https://marisstella.app/oncall-load-analyzer/", "category": "CI checks & developer gates", "description": "Free on-call load analyzer: paste a PagerDuty, Opsgenie or Grafana OnCall incident CSV and see who carries the pager, night and weekend pages, noisy and self-resolving alerts, and…", "pages": 1, "launched": "2026-10-10" }, { "slug": "online-business-valuation-calculator", "name": "Online Business Valuation Calculator — free, private, in your browser", "url": "https://marisstella.app/online-business-valuation-calculator/", "category": "Back-office money & contracts", "description": "Free online business valuation calculator. Enter revenue and SDE to get a sale price range for a SaaS, ecommerce, content or agency business, adjusted for growth, churn…", "pages": 1, "launched": "2026-09-30" }, { "slug": "open-floor-robots", "name": "Open Floor Robots — DIY robot vacuum, robot mop and vacuum-mop combo", "url": "https://marisstella.app/open-floor-robots/", "category": "Open hardware, robots & house plans", "description": "DIY robot vacuum, robot mop and robot vacuum-mop combo: open-source hardware (MIT) with laser-cut and 3D-printed parts, ESP32 firmware, a coverage path planner, and a cleaning…", "pages": 1, "launched": "2026-10-21" }, { "slug": "open-house-plans", "name": "Open House Plans: free, parametric house plans you can download", "url": "https://marisstella.app/open-house-plans/", "category": "Open hardware, robots & house plans", "description": "Generate a free house plan from a sentence: floor plan, elevations, 3D model (IFC, OBJ), CAD (DXF), bill of materials and a cost estimate. 1 to 5 bedrooms, farmhouse, craftsman…", "pages": 1, "launched": "2026-10-21" }, { "slug": "open-robot-mower", "name": "Open Robot Mower — build a DIY robotic lawn mower", "url": "https://marisstella.app/open-robot-mower/", "category": "Open hardware, robots & house plans", "description": "Build your own robot lawn mower. An open-source robotic mower with wire-free RTK GNSS navigation, a guarded pivoting-blade disc, a floating bump shell, ESP32 safety firmware and a…", "pages": 1, "launched": "2026-10-21" }, { "slug": "open-tennis-robots", "name": "Open Tennis Robots — DIY tennis ball machine + ball collecting robot", "url": "https://marisstella.app/open-tennis-robots/", "category": "Open hardware, robots & house plans", "description": "Build your own tennis ball machine that catches your returns with a moving net, and a robot that picks up tennis balls while you practise. Open-source hardware designs, firmware…", "pages": 1, "launched": "2026-10-19" }, { "slug": "openapi-breaking-change-check", "name": "Did this API version break existing clients?", "url": "https://marisstella.app/openapi-breaking-change-check/", "category": "CI checks & developer gates", "description": "Paste two OpenAPI 3.0/3.1 JSON documents and see exactly which changes would break an existing client — a removed endpoint, a parameter that became required, a narrowed type, a…", "pages": 4, "launched": "2026-09-17" }, { "slug": "optical-dispensary-margin-calculator", "name": "Optical dispensary margin calculator", "url": "https://marisstella.app/optical-dispensary-margin-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for optical shops and optometrists: what each eyeglass sale really earns after frame, lenses, remakes, vision plan and card fees and optician time. Margin by sale…", "pages": 1, "launched": "2026-10-09" }, { "slug": "osha-trir-dart-calculator", "name": "OSHA TRIR & DART Rate Calculator", "url": "https://marisstella.app/osha-trir-dart-calculator/", "category": "Compliance checks & evidence records", "description": "Free OSHA TRIR and DART rate calculator: turn your OSHA 300 log's recordable case count and total hours worked into the two rates GC prequalification forms and insurance renewals…", "pages": 3, "launched": "2026-09-23" }, { "slug": "overtime-pay-calculator", "name": "Overtime Pay Calculator — blended rate for two pay rates, free", "url": "https://marisstella.app/overtime-pay-calculator/", "category": "Creator & solo earner income", "description": "Free overtime pay calculator: standard time-and-a-half for one hourly rate, plus the FLSA weighted-average (blended rate) calculator for a week worked at two or more different pay…", "pages": 5, "launched": "2026-09-16" }, { "slug": "owner-operator-cpm-calculator", "name": "Owner Operator Cost Per Mile Calculator", "url": "https://marisstella.app/owner-operator-cpm-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free owner-operator CPM calculator: fuel, truck note, insurance, and deadhead miles in one week. See all-in cost per mile and the loaded rate that actually covers the empty ones.", "pages": 6, "launched": "2026-08-26" }, { "slug": "owner-operator-load-chain-planner", "name": "Which loads should you chain, and what's the lowest rate each is worth?", "url": "https://marisstella.app/owner-operator-load-chain-planner/", "category": "Logistics, freight & cloud cost", "description": "Paste a load-board shortlist with your own rates, pickup windows and costs and get the exact best chain of loads to run, which to leave, and the lowest rate each is worth, with…", "pages": 2, "launched": "2026-10-02" }, { "slug": "owner-operator-per-diem-calculator", "name": "Owner Operator Per Diem Calculator — free, private, in your browser", "url": "https://marisstella.app/owner-operator-per-diem-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free owner-operator per diem calculator: full and travel days away from home, the M&IE rate, the 80% DOT limit, per diem versus meal receipts, and the estimated self-employment…", "pages": 2, "launched": "2026-10-04" }, { "slug": "oyster-farm-growout-planner", "name": "Oyster Farm Growout Planner — free, private", "url": "https://marisstella.app/oyster-farm-growout-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free oyster farm planner: enter seed, survival, growout months, gear, lease and prices by grade, and see net per crop, break-even price and survival, and the cash needed before…", "pages": 1, "launched": "2026-10-10" }, { "slug": "package-exports-drift-check", "name": "Does your package.json \"exports\" map point at files that actually exist?", "url": "https://marisstella.app/package-exports-drift-check/", "category": "CI checks & developer gates", "description": "Paste your package.json and a listing of the files you actually publish and see every literal target in the \"exports\" map that points at a file that doesn't exist -- the cause of…", "pages": 4, "launched": "2026-09-09" }, { "slug": "paddle-payout-to-journal", "name": "Paddle earnings export to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/paddle-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Paddle payout to journal converter: proves the orders add up to your payout, splits product sales income, shipping, tax you collected, Paddle fee and refunds by month, and…", "pages": 1, "launched": "2026-10-05" }, { "slug": "padel-club-profit-calculator", "name": "Padel club calculator: what utilisation do you need to break even? Free, private", "url": "https://marisstella.app/padel-club-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free padel club profit calculator: courts, peak and off-peak court-hour prices, utilisation, members, coaching, food and drink, staffing, rent and a loan become monthly profit…", "pages": 1, "launched": "2026-10-13" }, { "slug": "page-seo-audit", "name": "Free on-page SEO audit that never uploads your page", "url": "https://marisstella.app/page-seo-audit/", "category": "CI checks & developer gates", "description": "Paste a page's HTML for a scored SEO and AI-readiness audit: title, description, headings, canonical, JSON-LD, alt text, each with its fix. Free, private.", "pages": 2, "launched": "2026-10-18" }, { "slug": "paid-sick-leave-accrual-calculator", "name": "Paid sick leave accrual calculator by state. Free, private", "url": "https://marisstella.app/paid-sick-leave-accrual-calculator/", "category": "Compliance checks & evidence records", "description": "Free paid sick leave calculator for small employers: pick your state and headcount to see how many hours an employee accrues per pay period, the annual and balance caps, whether…", "pages": 1, "launched": "2026-10-13" }, { "slug": "painting-bid-calculator", "name": "Painting Bid Calculator", "url": "https://marisstella.app/painting-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price an interior painting job from production rates: walls, ceilings, trim, and doors — plus paint, payroll burden, overhead, and the walk-away number. See why a $2 per square…", "pages": 4, "launched": "2026-08-26" }, { "slug": "paintless-dent-repair-quote-calculator", "name": "Paintless Dent Repair Quote Calculator — free, private", "url": "https://marisstella.app/paintless-dent-repair-quote-calculator/", "category": "Service business pricing & quotes", "description": "Free paintless dent repair and hail quote calculator: enter dents by size, aluminum and body-line share, tech time and comeback rate, and check your per-dent matrix against cost…", "pages": 1, "launched": "2026-10-11" }, { "slug": "parcel-dim-weight-calculator", "name": "Dimensional Weight Calculator", "url": "https://marisstella.app/parcel-dim-weight-calculator/", "category": "Logistics, freight & cloud cost", "description": "Work out the billable weight of a parcel from its box size, weight and DIM divisor — then see the box size that stops you paying for air, and whether the carton trips an…", "pages": 4, "launched": "2026-09-18" }, { "slug": "parcel-late-delivery-refund-finder", "name": "Parcel Late-Delivery Refund Finder — free, private, in your browser", "url": "https://marisstella.app/parcel-late-delivery-refund-finder/", "category": "Logistics, freight & cloud cost", "description": "Free tool for shippers: drop in your UPS or FedEx shipment report and see which parcels were delivered after the promised day, the shipping charge on each, the last day to file…", "pages": 1, "launched": "2026-09-29" }, { "slug": "parking-lot-striping-bid-calculator", "name": "Parking Lot Striping Bid Calculator", "url": "https://marisstella.app/parking-lot-striping-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a parking lot striping job from stall lines, ADA hash aisles, arrows, coats, and new-layout hours — plus price per stall, the extra a per-stall special hides, and the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "party-bus-charter-profit-calculator", "name": "Party Bus Charter Profit Calculator — true profit, margin and lowest quote per charter", "url": "https://marisstella.app/party-bus-charter-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for party bus, limo and shuttle charter operators. Enter the charter price, hours and minimum, driver and deadhead time, miles, fuel, vehicle cost and yearly…", "pages": 2, "launched": "2026-10-12" }, { "slug": "pastured-poultry-profit-planner", "name": "Is pastured poultry profitable? Free batch and season profit planner", "url": "https://marisstella.app/pastured-poultry-profit-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free pastured poultry profit calculator. Chicks, feed, processing, labour and price per pound in; profit per batch, per bird and per hour, break-even price per pound and mortality…", "pages": 1, "launched": "2026-10-07" }, { "slug": "patent-maintenance-fee-planner", "name": "Patent Maintenance Fee Planner", "url": "https://marisstella.app/patent-maintenance-fee-planner/", "category": "Service business pricing & quotes", "description": "When is each US patent maintenance fee due, when does the surcharge start, and when does the patent expire? Paste your patents and grant dates for every deadline, a multi-year fee…", "pages": 1, "launched": "2026-10-12" }, { "slug": "patio-door-bid-calculator", "name": "Patio Door Bid Calculator", "url": "https://marisstella.app/patio-door-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price a sliding glass or patio-door replacement from extra panels, impact glass, new-construction wrap, transom, sill pan, and balcony access — not a published $1,800-installed…", "pages": 4, "launched": "2026-08-26" }, { "slug": "patreon-fee-calculator", "name": "Patreon Fee Calculator", "url": "https://marisstella.app/patreon-fee-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for Patreon creators: real monthly payout after platform and processing fees, and whether per-creation billing costs you more than monthly.", "pages": 3, "launched": "2026-09-25" }, { "slug": "patreon-members-churn-analyzer", "name": "Patreon Members Churn Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/patreon-members-churn-analyzer/", "category": "Creator & solo earner income", "description": "Free analyzer for Patreon creators: drop in your Members export CSV and see active, declined and former patrons, MRR by tier, churn by tenure cohort, at-risk declined payments…", "pages": 1, "launched": "2026-09-29" }, { "slug": "patreon-payout-to-journal", "name": "Patreon earnings export to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/patreon-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Patreon payout to journal converter: proves the pledges add up to your payout, splits membership income, shipping, tax you collected, Patreon platform and processing fees and…", "pages": 1, "launched": "2026-10-05" }, { "slug": "paver-patio-bid-calculator", "name": "Paver Patio Bid Calculator", "url": "https://marisstella.app/paver-patio-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a paver patio from pattern waste, base depth, excavation, edge restraint, and haul-away — then see price per square foot, crew hours, and the walk-away number.", "pages": 4, "launched": "2026-08-26" }, { "slug": "pawn-loan-profit-calculator", "name": "Pawn loan profit calculator for pawnbrokers", "url": "https://marisstella.app/pawn-loan-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free pawn loan profit calculator for pawnbrokers: enter your rate, redemption rate, loan-to-value and what forfeits sell for to see profit per loan, break-even redemption, the…", "pages": 1, "launched": "2026-10-09" }, { "slug": "pay-application-generator", "name": "Progress billing and retainage, worked out line by line — free, private", "url": "https://marisstella.app/pay-application-generator/", "category": "Service business pricing & quotes", "description": "Free pay application generator for subcontractors and small general contractors: paste your schedule of values, set retainage, and get the contract sum, change orders, retainage…", "pages": 1, "launched": "2026-10-06" }, { "slug": "pay-transparency-directive-checker", "name": "EU Pay Transparency Directive checker: reporting dates, open duties and the 5% gap test. Free, private", "url": "https://marisstella.app/pay-transparency-directive-checker/", "category": "Compliance checks & evidence records", "description": "Free EU Pay Transparency Directive checker for employers: which duties apply at your headcount, which are still open, and which job categories hit the 5% pay gap trigger. Runs in…", "pages": 1, "launched": "2026-10-13" }, { "slug": "payment-processor-fee-comparison-calculator", "name": "Payment Processor Fee Comparison Calculator — free, private", "url": "https://marisstella.app/payment-processor-fee-comparison-calculator/", "category": "Marketplace seller tools", "description": "Free payment processing fee calculator: enter your monthly card sales, average sale and each processor's quote, and see the effective rate, monthly and yearly cost side by side…", "pages": 1, "launched": "2026-10-10" }, { "slug": "payment-reconciliation-workbench", "name": "Payment Reconciliation Workbench", "url": "https://marisstella.app/payment-reconciliation-workbench/", "category": "Back-office money & contracts", "description": "Free private CSV tool for small businesses to match Stripe, Square, or PayPal payouts to bank deposits and find reconciliation gaps without QuickBooks.", "pages": 4, "launched": "2026-08-26" }, { "slug": "payoneer-statement-to-journal", "name": "Payoneer statement to Xero / QuickBooks journal with realised FX — free, private", "url": "https://marisstella.app/payoneer-statement-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Payoneer to QuickBooks and Xero journal converter for multi-currency balances: values every row in your base currency at your rates, tracks average cost, books realised FX…", "pages": 1, "launched": "2026-10-06" }, { "slug": "paypal-activity-to-journal", "name": "PayPal activity to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/paypal-activity-to-journal/", "category": "Compliance checks & evidence records", "description": "Free PayPal activity report to journal converter: proves the Balance column is continuous, splits sales, fees, refunds, disputes and bank transfers by month, and downloads a…", "pages": 1, "launched": "2026-10-05" }, { "slug": "payroll-hours-csv-check", "name": "Payroll Hours CSV Check — free, private, in your browser", "url": "https://marisstella.app/payroll-hours-csv-check/", "category": "Compliance checks & evidence records", "description": "Free payroll hours CSV checker: finds 8:30 mixed with 8.5, text like 8h, Excel date serials, mixed date formats, duplicate person-days, hours over 24, Start/End times that…", "pages": 1, "launched": "2026-10-04" }, { "slug": "payroll-register-to-journal", "name": "Payroll register to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/payroll-register-to-journal/", "category": "Compliance checks & evidence records", "description": "Free payroll register to journal converter: checks every employee row, books wages and employer taxes as expenses and every withholding as a liability, totals the 941 deposit for…", "pages": 1, "launched": "2026-10-05" }, { "slug": "payroll-tax-deposit-penalty-calculator", "name": "Payroll Tax Deposit Penalty Calculator — due dates and late-deposit cost", "url": "https://marisstella.app/payroll-tax-deposit-penalty-calculator/", "category": "Back-office money & contracts", "description": "Free payroll tax deposit calculator for small employers: monthly or semiweekly due dates, the $100,000 next-day rule, and the failure-to-deposit penalty with the cheapest way to…", "pages": 1, "launched": "2026-10-01" }, { "slug": "pdf-accessibility-tag-check", "name": "PDF Accessibility Tag Checker", "url": "https://marisstella.app/pdf-accessibility-tag-check/", "category": "Compliance checks & evidence records", "description": "Free tool: drop a PDF in your browser and get an evidence report on tagging, title, language, image alt text, and form-field labels -- the structural checks behind PDF/UA and…", "pages": 3, "launched": "2026-09-16" }, { "slug": "pension-lump-sum-vs-annuity-calculator", "name": "Lump sum or monthly pension? Free calculator", "url": "https://marisstella.app/pension-lump-sum-vs-annuity-calculator/", "category": "Creator & solo earner income", "description": "Free pension lump sum vs monthly pension calculator: the pension's value at your expected return and lifespan, the return the lump sum must earn to match it, break-even age…", "pages": 1, "launched": "2026-10-08" }, { "slug": "percentage-rent-audit-checker", "name": "Percentage Rent Audit Checker — free", "url": "https://marisstella.app/percentage-rent-audit-checker/", "category": "Marketplace seller tools", "description": "Free tool for retail and restaurant tenants: recompute your landlord's percentage rent statement from your lease breakpoint, exclusions and your own sales, see the overcharge in…", "pages": 1, "launched": "2026-10-12" }, { "slug": "pergola-bid-calculator", "name": "Pergola Bid Calculator", "url": "https://marisstella.app/pergola-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a residential pergola or patio cover from the posts a square-foot special cannot see, the shade layer, the height, and the attached ledger — plus walk-away price and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "persona-conversation-simulator", "name": "Simulate conversations between fictional personalities", "url": "https://marisstella.app/persona-conversation-simulator/", "category": "More free tools", "description": "Build fictional characters with Big Five personalities and simulate negotiations, team meetings and arguments between them. Free, private, runs in your browser.", "pages": 2, "launched": "2026-10-20" }, { "slug": "personal-trainer-package-pricing-calculator", "name": "Personal Trainer Package Pricing Calculator — package vs. pay-per-session, free", "url": "https://marisstella.app/personal-trainer-package-pricing-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for independent personal trainers: compares a discounted prepaid session package against pay-per-session pricing on net take-home pay per hour, after your gym or…", "pages": 3, "launched": "2026-09-23" }, { "slug": "pest-control-bid-calculator", "name": "Pest Control Bid Calculator", "url": "https://marisstella.app/pest-control-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a pest control route stop from on-site minutes, bait stations, and drive time — not house size. See initial vs recurring invoices, effective hourly with the drive, and how…", "pages": 4, "launched": "2026-08-26" }, { "slug": "pet-boarding-daycare-profit-calculator", "name": "Dog boarding and daycare calculator: what occupancy do you need to break even? Free, private", "url": "https://marisstella.app/pet-boarding-daycare-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free dog boarding and daycare profit calculator: runs, daycare spots, prices, occupancy and attendant ratio become monthly profit, staffing steps, break-even occupancy, the cash…", "pages": 1, "launched": "2026-10-13" }, { "slug": "pet-grooming-bid-calculator", "name": "Pet Grooming Bid Calculator", "url": "https://marisstella.app/pet-grooming-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free pet grooming price calculator: size, coat, matting, add-ons, and mobile travel go into one transparent quote with break-even and target-margin price.", "pages": 4, "launched": "2026-09-06" }, { "slug": "pet-sitting-platform-fee-calculator", "name": "Pet sitting platform fee calculator", "url": "https://marisstella.app/pet-sitting-platform-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for pet sitters and dog walkers: what you keep per booking on Rover, Wag or another marketplace versus booking clients directly, how many direct bookings pay for…", "pages": 1, "launched": "2026-10-09" }, { "slug": "pet-waste-removal-route-calculator", "name": "Pet waste removal route calculator: what does your route really pay per hour? Free, private", "url": "https://marisstella.app/pet-waste-removal-route-calculator/", "category": "Service business pricing & quotes", "description": "Free profit calculator for pet waste removal and dog poop scooping routes: clients, price per visit, time on site, drive time, supplies and fixed costs become monthly profit…", "pages": 1, "launched": "2026-10-06" }, { "slug": "pg-stat-statements-analyzer", "name": "pg_stat_statements Analyzer — free, private, paste-the-output", "url": "https://marisstella.app/pg-stat-statements-analyzer/", "category": "CI checks & developer gates", "description": "Free pg_stat_statements analyzer: run one read-only query, paste the result, and see which Postgres queries use the most database time, which look like N+1 loops, and which miss…", "pages": 1, "launched": "2026-10-10" }, { "slug": "phone-repair-shop-profit-calculator", "name": "Phone Repair Shop Profit Calculator — free, private", "url": "https://marisstella.app/phone-repair-shop-profit-calculator/", "category": "Marketplace seller tools", "description": "Free phone repair shop calculator: enter screen, port and micro-soldering prices, bench minutes, supplies, technician pay and rent, and see profit per job and per bench hour…", "pages": 1, "launched": "2026-10-11" }, { "slug": "photo-addon-pricing-calculator", "name": "Photo Package Add-On Pricing Calculator", "url": "https://marisstella.app/photo-addon-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for wedding and event photographers: net profit and effective hourly rate for each package add-on after editing time, gear and subcontractor costs.", "pages": 3, "launched": "2026-09-16" }, { "slug": "photo-booth-event-quote", "name": "Photo Booth Event Quote Calculator", "url": "https://marisstella.app/photo-booth-event-quote/", "category": "Service business pricing & quotes", "description": "Free calculator for independent mobile photo booth operators: find the real price for one event booking after setup/teardown time, travel, attendant labor, unlimited-print risk…", "pages": 4, "launched": "2026-09-06" }, { "slug": "photo-editing", "name": "ShootFlow | Safe ingest and deliverables for photographers", "url": "https://marisstella.app/photo-editing/", "category": "Creator & solo earner income", "description": "ShootFlow is an early-stage open-source toolkit for safely ingesting photo and video media and planning graded reels, carousels and photo sets.", "pages": 1, "launched": "2026-10-15" }, { "slug": "photos-import-tools", "name": "Photos Import Tools | Resumable macOS photo import", "url": "https://marisstella.app/photos-import-tools/", "category": "Creator & solo earner income", "description": "Resumable, manifest-backed command-line tools that import JPEG and RAW photos into Apple Photos and offload SD cards with hash verification.", "pages": 1, "launched": "2026-10-15" }, { "slug": "physician-wrvu-compensation-calculator", "name": "Physician wRVU Compensation Calculator — free, private", "url": "https://marisstella.app/physician-wrvu-compensation-calculator/", "category": "Back-office money & contracts", "description": "Free physician wRVU compensation calculator. Compare base-plus-productivity, pure wRVU and fixed salary, find the break-even wRVUs, effective $/wRVU, pay per hour, shortfall…", "pages": 1, "launched": "2026-09-30" }, { "slug": "physician-wrvu-contract-calculator", "name": "Physician wRVU Contract Calculator — free, private, in your browser", "url": "https://marisstella.app/physician-wrvu-contract-calculator/", "category": "Back-office money & contracts", "description": "Free physician wRVU contract calculator. Enter two job offers, base salary, incentive threshold and dollars per wRVU, to see what each pays at your expected volume, where they…", "pages": 1, "launched": "2026-09-30" }, { "slug": "pickleball-facility-pro-forma", "name": "Pickleball Facility Pro Forma — free, private, in your browser", "url": "https://marisstella.app/pickleball-facility-pro-forma/", "category": "Service business pricing & quotes", "description": "Pickleball facility pro forma: enter courts, rates, utilization, memberships and costs and see monthly P&L, revenue per court-hour, break-even utilization, 24-month cash curve and…", "pages": 1, "launched": "2026-10-05" }, { "slug": "pilot-car-escort-run-profit-calculator", "name": "Pilot Car Escort Run Profit Calculator — true profit, margin and lowest quote per run", "url": "https://marisstella.app/pilot-car-escort-run-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for pilot car and oversize-load escort operators. Enter your quote (flat, day rate or per loaded mile), minimum charge, loaded and deadhead miles, driver hours…", "pages": 2, "launched": "2026-10-12" }, { "slug": "pinned-actions-check", "name": "Are your GitHub Actions pinned to a commit SHA?", "url": "https://marisstella.app/pinned-actions-check/", "category": "CI checks & developer gates", "description": "Paste your GitHub Actions workflow YAML and find every third-party action referenced by a mutable tag like @v4 instead of a pinned 40-character commit SHA. Free, runs in your…", "pages": 4, "launched": "2026-09-07" }, { "slug": "pip-audit-triage", "name": "Which pip-audit findings actually matter?", "url": "https://marisstella.app/pip-audit-triage/", "category": "CI checks & developer gates", "description": "Paste pip-audit -f json and your Python source: see which vulnerable packages your code actually imports and which are test-only or unreferenced noise. Free pip-audit triage, runs…", "pages": 2, "launched": "2026-10-13" }, { "slug": "pipedrive-import-csv-check", "name": "Pipedrive Import CSV Check — free, private, in your browser", "url": "https://marisstella.app/pipedrive-import-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Pipedrive deals, people and organizations CSV checker: finds deals with a bad status, value or currency, missing names and titles, invalid and duplicate emails, Excel-damaged…", "pages": 1, "launched": "2026-10-04" }, { "slug": "pizzeria-profit-calculator", "name": "Pizzeria Profit Calculator — free, private", "url": "https://marisstella.app/pizzeria-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free pro forma for pizzerias and pizza takeout shops: profit per order, break-even orders a day with the loan, the ticket for your target margin, delivery-app and own-driver cost…", "pages": 1, "launched": "2026-10-13" }, { "slug": "plantation-shutter-bid-calculator", "name": "Plantation Shutter Bid Calculator", "url": "https://marisstella.app/plantation-shutter-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price a residential plantation-shutter install from openings, inside versus outside mount, paint-grade versus stain-grade, hang versus measure versus template-and-custom, and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "plumber-flat-rate-price-calculator", "name": "What should a plumbing job cost at a flat rate?", "url": "https://marisstella.app/plumber-flat-rate-price-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "True cost per hour, tiered parts markup, travel time and margin give a flat-rate price, a minimum callout and a time-and-materials comparison. Your numbers, not advice. No…", "pages": 3, "launched": "2026-10-03" }, { "slug": "podcast-feed-check", "name": "Podcast Feed Validator", "url": "https://marisstella.app/podcast-feed-check/", "category": "Creator & solo earner income", "description": "Paste your podcast RSS feed to check it against Apple Podcasts requirements and the RSS 2.0 spec: missing tags, bad pubDates, duplicate guids. Nothing uploaded.", "pages": 3, "launched": "2026-09-23" }, { "slug": "podcast-sponsorship-rate-calculator", "name": "Podcast Sponsorship Rate Calculator — free, no sign-up", "url": "https://marisstella.app/podcast-sponsorship-rate-calculator/", "category": "Creator & solo earner income", "description": "Free podcast sponsorship rate calculator. Enter your average downloads per episode, niche, and read type to get a price range for a pre-roll, mid-roll, and post-roll ad spot —…", "pages": 4, "launched": "2026-09-17" }, { "slug": "pole-barn-bid-calculator", "name": "Pole Barn Bid Calculator", "url": "https://marisstella.app/pole-barn-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a post-frame pole barn from bays, eave height, overhead doors, lean-to, and gravel vs slab — plus the walk-away price a $45-a-foot ag special cannot see.", "pages": 4, "launched": "2026-08-26" }, { "slug": "pollination-contract-checker", "name": "Pollination Contract Checker — free, private", "url": "https://marisstella.app/pollination-contract-checker/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free pollination contract checker for beekeepers: enter the fee per hive, miles, inspection failures, feed and losses, and see your net per hive and break-even fee. Growers can…", "pages": 1, "launched": "2026-10-10" }, { "slug": "pool-opening-closing-price-calculator", "name": "Pool Opening and Closing Price Calculator — free, private", "url": "https://marisstella.app/pool-opening-closing-price-calculator/", "category": "Service business pricing & quotes", "description": "Free pool opening and closing price calculator: enter the pool size, cover, water condition, crew and chemical costs, and get a price for each visit, a season bundle and stops per…", "pages": 1, "launched": "2026-10-11" }, { "slug": "pool-plaster-bid-calculator", "name": "Pool Plaster / Resurfacing Bid Calculator", "url": "https://marisstella.app/pool-plaster-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a pool replaster from floor-plus-wall surface, finish (white plaster, quartz, pebble, glass), chip-out, spa, steps, waterline tile, and coping — not the homeowner's length ×…", "pages": 4, "launched": "2026-08-26" }, { "slug": "pool-route-pricing", "name": "Pool Service Route Pricing Calculator", "url": "https://marisstella.app/pool-route-pricing/", "category": "Service business pricing & quotes", "description": "Price recurring pool service accounts after labor, drive time, chemicals, and overhead. Free private pool route pricing calculator for independent operators.", "pages": 4, "launched": "2026-08-26" }, { "slug": "pool-service-route-calculator", "name": "Which pool service accounts are worth the drive? True hourly per account, reprice or drop, and route density", "url": "https://marisstella.app/pool-service-route-calculator/", "category": "Service business pricing & quotes", "description": "Find what each pool account on your route really earns per hour after drive time, chemicals and callbacks: which accounts to reprice or drop, the price that clears your target…", "pages": 2, "launched": "2026-10-03" }, { "slug": "popcorn-ceiling-bid-calculator", "name": "Popcorn Ceiling Bid Calculator", "url": "https://marisstella.app/popcorn-ceiling-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price popcorn ceiling removal from ceiling area, scrape-and-prime versus Level 4 skim versus Level 5 plus paint, 8-foot versus vaulted versus two-story access, and extras — plus…", "pages": 4, "launched": "2026-08-26" }, { "slug": "portable-restroom-event-quote", "name": "Porta Potty Event Quote Calculator", "url": "https://marisstella.app/portable-restroom-event-quote/", "category": "Service business pricing & quotes", "description": "Price a portable restroom (porta potty) event rental from days on site, pump-outs, and two round trips — not a Saturday headcount special. See walk-away price, price per unit-day…", "pages": 4, "launched": "2026-08-26" }, { "slug": "poshmark-fee-calculator", "name": "Poshmark Fee Calculator", "url": "https://marisstella.app/poshmark-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Poshmark seller fee calculator. The flat $2.95 fee under $15, 20% at $15+, the $14.75 break-even price, your real profit after item cost, and whether a lower offer costs you…", "pages": 5, "launched": "2026-09-07" }, { "slug": "poshmark-sales-report-analyzer", "name": "Poshmark Sales Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/poshmark-sales-report-analyzer/", "category": "Marketplace seller tools", "description": "Free analyzer for Poshmark sellers: load your My Sales Report CSV and see profit per item, brand and month after Poshmark's $2.95 / 20% fee, with effective fee rate, cost basis by…", "pages": 1, "launched": "2026-09-29" }, { "slug": "postgres-explain-analyzer", "name": "Why is my Postgres query slow? Paste the plan.", "url": "https://marisstella.app/postgres-explain-analyzer/", "category": "CI checks & developer gates", "description": "Paste a PostgreSQL EXPLAIN ANALYZE plan (text or JSON) and see where the time went per node, missing indexes, bad row estimates and disk spills, each with a suggested fix. Free…", "pages": 2, "launched": "2026-10-01" }, { "slug": "postgres-index-auditor", "name": "Postgres Index Auditor — free, private, paste-the-output", "url": "https://marisstella.app/postgres-index-auditor/", "category": "CI checks & developer gates", "description": "Free Postgres index auditor: run one read-only query, paste the result, and see unused, duplicate, redundant and invalid indexes, the disk they waste and DROP INDEX statements to…", "pages": 1, "launched": "2026-10-10" }, { "slug": "pottery-piece-pricing-calculator", "name": "How much should I charge for my pottery? Free cost-per-piece calculator", "url": "https://marisstella.app/pottery-piece-pricing-calculator/", "category": "Creator & solo earner income", "description": "Free pottery pricing calculator. Clay, glaze, kiln firing cost, breakage, your hours and studio rent in; true cost per sellable piece, the retail and wholesale price for your…", "pages": 1, "launched": "2026-10-07" }, { "slug": "pour-cost-calculator", "name": "Pour Cost Calculator", "url": "https://marisstella.app/pour-cost-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free pour cost calculator for bars and restaurants: price a cocktail from your own bottle costs and pour sizes, see the liquor cost percentage against your target, and find out…", "pages": 5, "launched": "2026-09-07" }, { "slug": "powder-coating-job-price-calculator", "name": "Powder Coating Job Price Calculator — free, private", "url": "https://marisstella.app/powder-coating-job-price-calculator/", "category": "Service business pricing & quotes", "description": "Free powder coating price calculator for job shops: enter the parts, powder, transfer efficiency, labour, oven batches and setup, and get a price per piece and per square foot…", "pages": 1, "launched": "2026-10-10" }, { "slug": "ppf-ceramic-coating-price-calculator", "name": "PPF and Ceramic Coating Bid Calculator — free, private", "url": "https://marisstella.app/ppf-ceramic-coating-price-calculator/", "category": "Service business pricing & quotes", "description": "Free PPF and ceramic coating bid calculator: enter vehicle size, film coverage, roll cost and waste, paint correction, bay days and redo rate, and get a price and profit per bay…", "pages": 1, "launched": "2026-10-11" }, { "slug": "ppp-pricing-table-generator", "name": "PPP pricing table generator for apps and SaaS", "url": "https://marisstella.app/ppp-pricing-table-generator/", "category": "CI checks & developer gates", "description": "Turn one price into a purchasing-power (PPP) price table for about 50 countries: damped discounts, a floor, .99 rounding, price tiers, regional discount groups and a revenue…", "pages": 2, "launched": "2026-10-12" }, { "slug": "pql-radar", "name": "PQL Radar — find the free signups about to become customers", "url": "https://marisstella.app/pql-radar/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to MadKudu and Pocus for small SaaS: learn from your own signups which first-week behaviour comes before paying, with an honest out-of-time…", "pages": 1, "launched": "2026-10-16" }, { "slug": "pressure-washing-bid-calculator", "name": "Pressure Washing Bid Calculator", "url": "https://marisstella.app/pressure-washing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a pressure washing or soft-wash job from each surface's production rate, plus drive time, setup, chemicals, and a minimum job. See the after-travel hourly and the walk-away…", "pages": 5, "launched": "2026-08-26" }, { "slug": "price-drop-watcher", "name": "Price drop alerts for any shop, on your own GitHub", "url": "https://marisstella.app/price-drop-watcher/", "category": "More free tools", "description": "Get price drop and back-in-stock alerts for any product page, free. Runs on your own GitHub Actions, alerts your phone, no account or tracking. Test a page in your browser first.", "pages": 1, "launched": "2026-10-18" }, { "slug": "price-elasticity-estimator", "name": "Price Elasticity Estimator — free, private, in your browser", "url": "https://marisstella.app/price-elasticity-estimator/", "category": "Back-office money & contracts", "description": "Free price elasticity calculator for sellers. Paste your sales history (date, price, units) to estimate how demand reacts to price, get a confidence interval, the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "price-increase-breakeven-calculator", "name": "How many customers can you lose after a price increase?", "url": "https://marisstella.app/price-increase-breakeven-calculator/", "category": "Marketplace seller tools", "description": "Paste your prices, unit costs and volumes, set a price increase, and see how many units you can lose before the raise stops paying, item by item. Free, runs in your browser…", "pages": 2, "launched": "2026-10-02" }, { "slug": "print-atelier", "name": "Print File Preflight — free DPI and print-size checker", "url": "https://marisstella.app/print-atelier/", "category": "Compliance checks & evidence records", "description": "Free print-file preflight for artists and photographers: check implied DPI at a target print size, compare up to five export masters, and download a dated technical record before…", "pages": 3, "launched": "2026-08-18" }, { "slug": "print-on-demand-profit-calculator", "name": "Print-on-Demand Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/print-on-demand-profit-calculator/", "category": "Marketplace seller tools", "description": "Free print-on-demand profit calculator: profit per sale after Etsy, Shopify or eBay fees, supplier cost, shipping, refunds and ads; the price for your target margin; break-even ad…", "pages": 1, "launched": "2026-09-29" }, { "slug": "private-chef-service-price-calculator", "name": "Private Chef Service Price Calculator — free, private", "url": "https://marisstella.app/private-chef-service-price-calculator/", "category": "Service business pricing & quotes", "description": "Free private chef and meal-prep price calculator: enter guests, shopping, prep, cooking, cleanup and travel hours, groceries and overhead, and see a cost-plus price per visit and…", "pages": 1, "launched": "2026-10-11" }, { "slug": "private-pilot-training-cost-calculator", "name": "Private pilot training cost calculator: what will your license really cost? Free, private", "url": "https://marisstella.app/private-pilot-training-cost-calculator/", "category": "Service business pricing & quotes", "description": "Free private pilot license cost calculator: flight hours, aircraft rental, instructor time, exam fees and gear become a total cost, a monthly budget, the price of each extra hour…", "pages": 1, "launched": "2026-10-06" }, { "slug": "private-practice-payer-mix-calculator", "name": "Private Practice Payer Mix Calculator — free, private, in your browser", "url": "https://marisstella.app/private-practice-payer-mix-calculator/", "category": "Back-office money & contracts", "description": "Payer mix calculator for therapists and counselors in private practice. See what each insurance panel and your cash fee really net per session and per clinical hour after denials…", "pages": 1, "launched": "2026-10-01" }, { "slug": "private-school-tuition-discount-calculator", "name": "Private School Tuition Discount Calculator — discount rate and net tuition revenue", "url": "https://marisstella.app/private-school-tuition-discount-calculator/", "category": "Service business pricing & quotes", "description": "Free tuition discount calculator for independent schools. Enter sticker tuition and your financial aid groups; it shows the discount rate, net tuition per student, break-even…", "pages": 2, "launched": "2026-10-11" }, { "slug": "process-server-day-picker", "name": "Which serves should an independent process server take today?", "url": "https://marisstella.app/process-server-day-picker/", "category": "Service business pricing & quotes", "description": "Paste the day's requested process-serving assignments and get the most profitable set and order for one server, with time windows, drive cost and a price for every job it turns…", "pages": 2, "launched": "2026-10-02" }, { "slug": "process-server-fee-calculator", "name": "Process Server Fee & Route Profit Calculator", "url": "https://marisstella.app/process-server-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for independent process servers: find real net profit for one service-of-process job after extra attempts, rush and skip-trace fees, mileage, and your own drive…", "pages": 4, "launched": "2026-09-11" }, { "slug": "product-analytics-pricing-calculator", "name": "What will product analytics cost at your event volume, and who is cheapest?", "url": "https://marisstella.app/product-analytics-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your monthly event volume and see what PostHog, Mixpanel, Plausible, Fathom and Umami Cloud charge, the 12-month spend under your growth rate, and the volume where the…", "pages": 2, "launched": "2026-10-03" }, { "slug": "production-mix-optimizer", "name": "Weekly Production Mix Optimizer — free, private, in your browser", "url": "https://marisstella.app/production-mix-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free production mix optimizer for bakeries, workshops and small makers. Enter your products, margins and the hours or machines each one uses; it finds the most profitable weekly…", "pages": 2, "launched": "2026-10-01" }, { "slug": "project-estimate-calibrator", "name": "Project Estimate Calibrator — free, private, in your browser", "url": "https://marisstella.app/project-estimate-calibrator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free estimate buffer calculator for freelancers, agencies and contractors. Paste your finished projects (estimate and actual) to see how your estimates really miss, the hours or…", "pages": 1, "launched": "2026-09-30" }, { "slug": "project-staffing-margin-optimizer", "name": "Project staffing margin optimizer", "url": "https://marisstella.app/project-staffing-margin-optimizer/", "category": "Service business pricing & quotes", "description": "Free staffing optimizer for agencies, consultancies and freelance teams: enter each person's cost, hours and skills and each project's bill rate and hours. Get the exact split of…", "pages": 1, "launched": "2026-10-09" }, { "slug": "prometheus-cardinality-cost", "name": "Which labels are inflating your Prometheus metrics bill?", "url": "https://marisstella.app/prometheus-cardinality-cost/", "category": "CI checks & developer gates", "description": "Paste a Prometheus or OpenMetrics /metrics scrape and see active series per metric, the high-cardinality labels, the exact series saved by dropping each one, and a monthly cost…", "pages": 2, "launched": "2026-10-01" }, { "slug": "prop-firm-challenge-calculator", "name": "Prop Firm Challenge Calculator", "url": "https://marisstella.app/prop-firm-challenge-calculator/", "category": "Creator & solo earner income", "description": "Simulate a funded-trader evaluation with your own win rate, reward:risk and risk per trade. Pass probability under a profit target, daily loss limit and static or trailing…", "pages": 2, "launched": "2026-10-12" }, { "slug": "propane-delivery-route-margin", "name": "Propane Delivery Route Margin Calculator", "url": "https://marisstella.app/propane-delivery-route-margin/", "category": "Service business pricing & quotes", "description": "Free calculator for independent propane (LP gas) delivery route operators: find real annual profit per customer after the retail/wholesale price spread, the minimum-delivery fee…", "pages": 3, "launched": "2026-09-17" }, { "slug": "property-management-profit-calculator", "name": "How many doors does my property management company need? Free calculator", "url": "https://marisstella.app/property-management-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free property management profit calculator: doors, fee percentage, leasing and renewal income, managers and admin in; monthly profit, break-even doors, the cost of your next hire…", "pages": 1, "launched": "2026-10-08" }, { "slug": "property-tax-appeal-calculator", "name": "Property Tax Appeal Calculator — free, private, in your browser", "url": "https://marisstella.app/property-tax-appeal-calculator/", "category": "Back-office money & contracts", "description": "Free property tax appeal calculator: adjust comparable sales to your home, compare with your assessed value, and see the yearly tax saved, the break-even odds and what an appeal…", "pages": 1, "launched": "2026-09-29" }, { "slug": "proposal-maker", "name": "Proposal Maker — free client proposal generator, no signup", "url": "https://marisstella.app/proposal-maker/", "category": "Creator & solo earner income", "description": "Free proposal generator for freelancers, consultants and small agencies: scope with included and excluded lists, phases with dates, fixed, good-better-best, hourly-with-cap or…", "pages": 1, "launched": "2026-10-09" }, { "slug": "provider-credentialing-delay-cost-calculator", "name": "Provider credentialing delay cost calculator", "url": "https://marisstella.app/provider-credentialing-delay-cost-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for medical, dental and therapy practices: what a payer credentialing or enrollment delay costs per new clinician in lost and deferred revenue, and how much filing…", "pages": 1, "launched": "2026-10-09" }, { "slug": "pslf-vs-refinance-calculator", "name": "PSLF vs Refinance Calculator — free, private, in your browser", "url": "https://marisstella.app/pslf-vs-refinance-calculator/", "category": "Back-office money & contracts", "description": "Free PSLF vs refinance calculator. Enter your federal loan balance, income and a refinance offer to see total paid under Public Service Loan Forgiveness, the amount forgiven, the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "pte-tax-election-calculator", "name": "Is a PTET election worth it? Free calculator", "url": "https://marisstella.app/pte-tax-election-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for S corporation and partnership owners: does a state pass-through entity tax (PTET) election save federal tax once the SALT cap, its income phase-out, your…", "pages": 1, "launched": "2026-10-08" }, { "slug": "pto-accrual-liability-calculator", "name": "PTO accrual liability calculator", "url": "https://marisstella.app/pto-accrual-liability-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for small employers: paste your roster and get the dollar liability of unused PTO today, projected forward with accrual caps, the payout rule for your state, and…", "pages": 1, "launched": "2026-10-09" }, { "slug": "public-record-watch", "name": "Public-Record Watch", "url": "https://marisstella.app/public-record-watch/", "category": "Compliance checks & evidence records", "description": "Free, no-signup, no-upload tool that compares two dated public-register snapshots (licenses, permits, registrations) in your browser and reports what changed. Runs entirely…", "pages": 3, "launched": "2026-08-26" }, { "slug": "publish-kit", "name": "Publish Kit — podcast feeds, EPUBs, audiobooks and paperback covers", "url": "https://marisstella.app/publish-kit/", "category": "Creator & solo earner income", "description": "Free podcast RSS feed generator, Markdown to EPUB converter, ACX audiobook checker and KDP spine calculator. Runs in your browser, or as a CLI for AI agents.", "pages": 2, "launched": "2026-10-20" }, { "slug": "pwa-installability-check", "name": "PWA Installability Checker", "url": "https://marisstella.app/pwa-installability-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that fetches your page, its Web App Manifest, and every icon it lists, then paste the JSON here for a plain-English report against Chrome's installability…", "pages": 4, "launched": "2026-09-10" }, { "slug": "pypi-provenance-check", "name": "Which of your PyPI dependencies lack a provenance attestation?", "url": "https://marisstella.app/pypi-provenance-check/", "category": "CI checks & developer gates", "description": "Paste a requirements.txt or pyproject.toml to see which Python dependencies have PyPI provenance attestations and which rely on classic API tokens.", "pages": 4, "launched": "2026-09-25" }, { "slug": "qbi-deduction-calculator", "name": "QBI Deduction Calculator — free Section 199A estimator, 2025 & 2026", "url": "https://marisstella.app/qbi-deduction-calculator/", "category": "Back-office money & contracts", "description": "Estimate the 20% qualified business income deduction, including the SSTB phase-out and the W-2 wage / UBIA limit for a single qualified trade or business. Entirely client-side.", "pages": 3, "launched": "2026-09-17" }, { "slug": "qcd-calculator", "name": "QCD calculator", "url": "https://marisstella.app/qcd-calculator/", "category": "Service business pricing & quotes", "description": "Free QCD calculator: compare a qualified charitable distribution from your IRA with giving cash. See the effect on AGI, taxable Social Security, the senior deduction, federal and…", "pages": 1, "launched": "2026-10-08" }, { "slug": "qif-file-check", "name": "QIF File Check — free, private, in your browser", "url": "https://marisstella.app/qif-file-check/", "category": "Compliance checks & evidence records", "description": "Free QIF checker: finds why a QIF file imports with the wrong month, twice, or not at all (no !Type header, missing ^, mixed date order, bad amounts, unbalanced splits), with line…", "pages": 1, "launched": "2026-10-05" }, { "slug": "qsbs-exclusion-calculator", "name": "QSBS Exclusion Calculator — free, Section 1202", "url": "https://marisstella.app/qsbs-exclusion-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the Section 1202 Qualified Small Business Stock (QSBS) gain exclusion, expanded by OBBBA — compares the old all-or-nothing 5-year rule against the new tiered…", "pages": 2, "launched": "2026-09-25" }, { "slug": "quarterly-estimated-tax-calendar", "name": "Quarterly Estimated Tax Calendar — free, no sign-up", "url": "https://marisstella.app/quarterly-estimated-tax-calendar/", "category": "Back-office money & contracts", "description": "Free calculator for US freelancers, 1099 contractors, and gig workers: computes the IRS safe-harbor quarterly estimated tax payment from your own numbers, gives the four real…", "pages": 4, "launched": "2026-09-11" }, { "slug": "quick-pick-survey", "name": "Quick Pick | Pairwise preference survey engine", "url": "https://marisstella.app/quick-pick-survey/", "category": "Creator & solo earner income", "description": "An open-source pairwise-comparison survey engine: pick one of two options, repeat, and it infers a ranked preference ordering with confidence intervals, including trade-offs…", "pages": 1, "launched": "2026-08-18" }, { "slug": "quickbooks-chart-of-accounts-csv-check", "name": "QuickBooks Chart of Accounts CSV Check — free, private, in your browser", "url": "https://marisstella.app/quickbooks-chart-of-accounts-csv-check/", "category": "Back-office money & contracts", "description": "Free QuickBooks Online chart of accounts import CSV checker: unknown account types, blank detail types, duplicate names and numbers, sub-accounts before their parent, balances on…", "pages": 1, "launched": "2026-10-04" }, { "slug": "quickbooks-iif-file-check", "name": "QuickBooks IIF File Check — free, private, in your browser", "url": "https://marisstella.app/quickbooks-iif-file-check/", "category": "Compliance checks & evidence records", "description": "Free QuickBooks Desktop IIF checker: finds why an IIF import fails or posts wrong (missing ENDTRNS, transactions that do not balance, stray tabs, bad dates, Excel quotes, unknown…", "pages": 1, "launched": "2026-10-05" }, { "slug": "quickbooks-import-csv-check", "name": "QuickBooks Import CSV Check — free, private, in your browser", "url": "https://marisstella.app/quickbooks-import-csv-check/", "category": "Back-office money & contracts", "description": "Free QuickBooks Online import CSV checker for customers, vendors and products and services: finds blank and duplicate names, colons, bad opening balances and dates, emails, ZIP…", "pages": 1, "launched": "2026-10-04" }, { "slug": "quote-follow-up-timing", "name": "Quote Follow-Up Timing — free, private, in your browser", "url": "https://marisstella.app/quote-follow-up-timing/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free quote follow-up timing tool for contractors, agencies and freelancers. Paste your past quotes (days to decision, won, lost or open) to see when your wins actually arrive…", "pages": 1, "launched": "2026-09-30" }, { "slug": "quote-margin-check", "name": "Quote Margin Check — free effective hourly rate calculator", "url": "https://marisstella.app/quote-margin-check/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free calculator for freelancers and small agencies: turn a proposed price, delivery hours, admin/revision time, overhead, and subcontractor cost into your real effective hourly…", "pages": 8, "launched": "2026-08-24" }, { "slug": "radon-mitigation-bid-calculator", "name": "Radon Mitigation Bid Calculator", "url": "https://marisstella.app/radon-mitigation-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a radon mitigation install from extra suction points, crawl membrane, roof discharge, high-suction fan, new circuit, firestops, permit, and post-mitigation test — not a…", "pages": 4, "launched": "2026-08-26" }, { "slug": "rd-tax-credit-calculator", "name": "R&D Tax Credit Calculator — free, private", "url": "https://marisstella.app/rd-tax-credit-calculator/", "category": "Back-office money & contracts", "description": "Free R&D tax credit calculator for startups and small companies. Paste staff wages and time on research, compare the regular and simplified credit, see the Section 280C cost and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "rds-instance-cost-advisor", "name": "Why is your RDS bill so high?", "url": "https://marisstella.app/rds-instance-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your Amazon RDS instances (class, engine, Multi-AZ, storage, IOPS, CPU) and get what each costs, Multi-AZ you pay for outside production, io1 IOPS that gp3 covers, Graviton…", "pages": 2, "launched": "2026-10-02" }, { "slug": "rds-instance-rightsizer", "name": "Is your RDS instance too big?", "url": "https://marisstella.app/rds-instance-rightsizer/", "category": "CI checks & developer gates", "description": "Paste CloudWatch CPU, freeable memory and connection numbers (or describe-db-instances JSON) and see which RDS and Aurora instances are over- or under-provisioned, the next class…", "pages": 2, "launched": "2026-10-02" }, { "slug": "real-estate-agent-photo-app", "name": "MLS Listing Photo Preflight — free listing photo checker", "url": "https://marisstella.app/real-estate-agent-photo-app/", "category": "Compliance checks & evidence records", "description": "Free preflight check for MLS listing photos: resolution, file size, format, aspect ratio, branding filenames, and staged-photo pairing. Reads photo headers in your browser —…", "pages": 3, "launched": "2026-08-18" }, { "slug": "real-estate-photographer-shoot-profit-calculator", "name": "Real Estate Photographer Shoot Profit Calculator — free, private", "url": "https://marisstella.app/real-estate-photographer-shoot-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for real estate photographers: what each listing package really earns per hour after drive, shoot, editing and admin time, the fee that hits your hourly target…", "pages": 1, "launched": "2026-10-10" }, { "slug": "real-estate-professional-status-calculator", "name": "Do I qualify as a real estate professional? Free calculator", "url": "https://marisstella.app/real-estate-professional-status-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator: do your hours pass the real estate professional 750-hour and more-than-half tests, are your rentals materially participated in, and what is turning a rental loss…", "pages": 1, "launched": "2026-10-08" }, { "slug": "recipe-costing-calculator", "name": "What does this recipe really cost per portion? Free recipe costing calculator", "url": "https://marisstella.app/recipe-costing-calculator/", "category": "Service business pricing & quotes", "description": "Free recipe costing: type your pantry prices and recipes, get cost per portion, food cost percentage and the menu price that hits your target. Handles trim yield, sub-recipes…", "pages": 1, "launched": "2026-10-08" }, { "slug": "recompete-radar", "name": "Which federal contracts in my niche expire next?", "url": "https://marisstella.app/recompete-radar/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free tool for small government contractors: list the federal contracts in your NAICS code and state that end in the next 6 to 24 months, who holds them, how concentrated the…", "pages": 1, "launched": "2026-10-16" }, { "slug": "redirect-chain-check", "name": "Redirect Chain Checker", "url": "https://marisstella.app/redirect-chain-check/", "category": "CI checks & developer gates", "description": "Free tool: paste the hops a URL's redirects actually took (from your browser's Network tab, or a curl -sI trace) and check for a redirect loop, a chain longer than the recommended…", "pages": 4, "launched": "2026-09-11" }, { "slug": "redirect-map-check", "name": "Redirect Map Check — free, private, in your browser", "url": "https://marisstella.app/redirect-map-check/", "category": "Compliance checks & evidence records", "description": "Free 301 redirect map checker for site migrations: finds redirect loops, chains, conflicting duplicates, mass redirects to the homepage, spaces and fragments in URLs, targets…", "pages": 1, "launched": "2026-10-05" }, { "slug": "referral-keeper", "name": "Referral Keeper — a self-hosted affiliate program for Stripe sellers", "url": "https://marisstella.app/referral-keeper/", "category": "Self-hosted business apps", "description": "Run an affiliate or referral program on your own Stripe account: tracking link, recurring commissions, refund clawbacks, payout CSV. Plan what a program will cost you in your…", "pages": 1, "launched": "2026-10-15" }, { "slug": "referrer-permissions-policy-check", "name": "Referrer-Policy & Permissions-Policy Checker", "url": "https://marisstella.app/referrer-permissions-policy-check/", "category": "CI checks & developer gates", "description": "Check your site's Referrer-Policy and Permissions-Policy headers for unsafe-url, invalid syntax and wildcard camera or microphone access. Nothing uploaded.", "pages": 1, "launched": "2026-09-25" }, { "slug": "regex-redos-check", "name": "Which regexes in your code can hang your server?", "url": "https://marisstella.app/regex-redos-check/", "category": "CI checks & developer gates", "description": "A free static ReDoS scanner for JS, TS and Python with a CI-ready CLI and an optional timing probe. No account, no upload.", "pages": 2, "launched": "2026-10-01" }, { "slug": "release-notes-generator", "name": "Changelog from git commits, in your browser", "url": "https://marisstella.app/release-notes-generator/", "category": "CI checks & developer gates", "description": "Generate release notes and a CHANGELOG.md entry from git log: grouped by Conventional Commit type, breaking changes first, with a suggested semantic version bump. Free, runs in…", "pages": 2, "launched": "2026-10-12" }, { "slug": "renewal-rent-optimizer", "name": "Renewal Rent Optimizer — free, private, in your browser", "url": "https://marisstella.app/renewal-rent-optimizer/", "category": "Back-office money & contracts", "description": "Free lease renewal rent calculator for small landlords. Paste your past renewal offers (current rent, offered rent, renewed or left) to see how your tenants' chance of staying…", "pages": 1, "launched": "2026-09-30" }, { "slug": "rent-increase-notice-checker", "name": "Rent increase caps and notice periods, checked for every unit — free, private", "url": "https://marisstella.app/rent-increase-notice-checker/", "category": "Service business pricing & quotes", "description": "Free rent increase checker for small landlords: paste a rent roll, see which units are over the California, Oregon, Washington or New York cap, the notice days each needs, the…", "pages": 1, "launched": "2026-10-06" }, { "slug": "rent-roll-delinquency-analyzer", "name": "Rent Roll Delinquency Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/rent-roll-delinquency-analyzer/", "category": "Back-office money & contracts", "description": "Free analyzer for small landlords: load your rent ledger and see who owes what and how old it is, which units pay late, monthly collection rate and a late-fee upper bound. Runs in…", "pages": 1, "launched": "2026-09-29" }, { "slug": "rent-vs-buy-breakeven-calculator", "name": "Rent vs buy break-even calculator", "url": "https://marisstella.app/rent-vs-buy-breakeven-calculator/", "category": "Creator & solo earner income", "description": "Free rent vs buy calculator: month-by-month comparison with the down payment invested, closing and selling costs, PMI and the itemized-deduction test. Shows the break-even year…", "pages": 1, "launched": "2026-10-08" }, { "slug": "rental-dscr-calculator", "name": "Rental Property DSCR Calculator — free, private, in your browser", "url": "https://marisstella.app/rental-dscr-calculator/", "category": "Back-office money & contracts", "description": "Free rental property DSCR calculator for investors. Enter price, rent, loan terms and costs to see DSCR both ways, cash-on-cash, cap rate, break-even occupancy, the largest loan a…", "pages": 1, "launched": "2026-09-30" }, { "slug": "rental-fleet-size-optimizer", "name": "Rental Fleet Size Optimizer — free, private, in your browser", "url": "https://marisstella.app/rental-fleet-size-optimizer/", "category": "Service business pricing & quotes", "description": "Free rental fleet size optimizer for tent, equipment, kayak, tool and party rental businesses. Enter your seasons, rental lengths, price and what a unit costs to own; it finds the…", "pages": 2, "launched": "2026-10-01" }, { "slug": "rental-ledger", "name": "Rental Ledger — free landlord Schedule E and depreciation, private", "url": "https://marisstella.app/rental-ledger/", "category": "Creator & solo earner income", "description": "Free private rental property ledger: log rent and expenses per property, get Schedule E by property, 27.5-year depreciation, the $25,000 passive loss allowance, a monthly rent…", "pages": 3, "launched": "2026-10-07" }, { "slug": "rental-property-schedule-e-categorizer", "name": "Rental Property Schedule E Categorizer — free, private, in your browser", "url": "https://marisstella.app/rental-property-schedule-e-categorizer/", "category": "Back-office money & contracts", "description": "Free tool for landlords: drop in your bank or card CSV and get rental income and expenses sorted into Schedule E lines per property, with mortgage interest split out…", "pages": 1, "launched": "2026-09-29" }, { "slug": "rental-rent-optimizer", "name": "Rental Rent Optimizer — free, private, in your browser", "url": "https://marisstella.app/rental-rent-optimizer/", "category": "Back-office money & contracts", "description": "Free rental rent optimizer for small landlords. Paste your past listings (asking rent, days on market, leased or still vacant) to see how fast your units lease at each rent, the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "repository-branch-hygiene", "name": "Safe Git branch cleanup review", "url": "https://marisstella.app/repository-branch-hygiene/", "category": "Compliance checks & evidence records", "description": "Paste a branch snapshot and see which stale Git branches are delete candidates and which still hold unique work. Runs in your browser; nothing is uploaded and nothing is deleted.", "pages": 3, "launched": "2026-08-24" }, { "slug": "required-checks-drift-check", "name": "Is a required status check stuck forever on your repo?", "url": "https://marisstella.app/required-checks-drift-check/", "category": "CI checks & developer gates", "description": "Paste your branch protection required status checks and your GitHub Actions workflow YAML to find every required check name no job can ever report again — the reason a pull…", "pages": 3, "launched": "2026-09-17" }, { "slug": "requirements-pin-check", "name": "Is your requirements.txt actually reproducible?", "url": "https://marisstella.app/requirements-pin-check/", "category": "CI checks & developer gates", "description": "Paste your requirements.txt and see every unpinned version, missing hash, extra index URL and unpinned git dependency. Free pip requirements pin checker, runs in your browser…", "pages": 2, "launched": "2026-10-03" }, { "slug": "reseller-books", "name": "Reseller Books — all your marketplaces in one set of books", "url": "https://marisstella.app/reseller-books/", "category": "Marketplace seller tools", "description": "Free private tool for resellers: drop your eBay, Etsy, Poshmark, Whatnot and Shopify reports and get one monthly profit and loss, what each channel really keeps, and a Schedule C…", "pages": 1, "launched": "2026-10-16" }, { "slug": "restaurant-delivery-commission-analyzer", "name": "Restaurant Delivery Commission Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/restaurant-delivery-commission-analyzer/", "category": "Marketplace seller tools", "description": "Free analyzer for restaurants: drop in your DoorDash, Uber Eats or Grubhub payout or order-level CSV and see the real take rate per platform and per order, net after food cost and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "restaurant-labor-cost-daypart-analyzer", "name": "Restaurant Labor Cost Analyzer — free, private, in your browser", "url": "https://marisstella.app/restaurant-labor-cost-daypart-analyzer/", "category": "Restaurant, bar & food truck pricing", "description": "Free tool for restaurant owners: drop in your hourly sales and time-entry exports and see labor % of sales and sales per labor hour by daypart, weekday and hour, plus the labor…", "pages": 1, "launched": "2026-09-29" }, { "slug": "restaurant-pos-menu-mix-analyzer", "name": "Restaurant POS Menu Mix Analyzer — free, private, in your browser", "url": "https://marisstella.app/restaurant-pos-menu-mix-analyzer/", "category": "Restaurant, bar & food truck pricing", "description": "Free tool for restaurant owners: drop in your POS item-sales export and see every menu item as a Star, Plowhorse, Puzzle or Dog, the dollar impact of a price rise on Plowhorses…", "pages": 1, "launched": "2026-09-29" }, { "slug": "restaurant-tip-pool-calculator", "name": "Split restaurant tips by hours, points or tip-out — free, private", "url": "https://marisstella.app/restaurant-tip-pool-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free restaurant tip pool calculator: paste a shift list and split tips by hours, by role points or by server tip-out. Card fee, owner and manager exclusion, payroll CSV. Private…", "pages": 1, "launched": "2026-10-06" }, { "slug": "retainage-cashflow-calculator", "name": "Construction Retainage Calculator", "url": "https://marisstella.app/retainage-cashflow-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free construction retainage calculator for contractors and subcontractors. See retainage withheld, unpaid cash, carrying cost, when retainage typically releases, and copy a…", "pages": 4, "launched": "2026-08-25" }, { "slug": "retaining-wall-bid-calculator", "name": "Retaining Wall Bid Calculator", "url": "https://marisstella.app/retaining-wall-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a retaining wall from face area, drain-stone volume, geogrid layers, corners, and the engineer/permit step a per-linear-foot quote hides — then see price per foot, crew…", "pages": 4, "launched": "2026-08-26" }, { "slug": "retirement-plan-startup-credit-calculator", "name": "Retirement plan startup credit calculator. Free, private", "url": "https://marisstella.app/retirement-plan-startup-credit-calculator/", "category": "Compliance checks & evidence records", "description": "Free calculator for the SECURE 2.0 small-employer retirement plan startup credit: setup costs, employer contribution and auto-enrollment credits over five years, with the net…", "pages": 1, "launched": "2026-10-13" }, { "slug": "retirement-withdrawal-sequencer", "name": "Retirement Withdrawal Sequencer — free, private, in your browser", "url": "https://marisstella.app/retirement-withdrawal-sequencer/", "category": "Restaurant, bar & food truck pricing", "description": "Free retirement withdrawal calculator. Enter your taxable, traditional and Roth balances, spending and Social Security; it compares withdrawal orders and bracket-filling Roth…", "pages": 2, "launched": "2026-10-01" }, { "slug": "retreat-profit-pricing-calculator", "name": "Retreat and workshop profit calculator", "url": "https://marisstella.app/retreat-profit-pricing-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for retreat, workshop and group-trip organizers: break-even guests, profit by turnout, the cost of a venue guaranteed minimum and of early-bird seats, and the…", "pages": 1, "launched": "2026-10-09" }, { "slug": "returns-policy-cost-analyzer", "name": "What do returns really cost your store?", "url": "https://marisstella.app/returns-policy-cost-analyzer/", "category": "Marketplace seller tools", "description": "Paste your orders and refunds and see what each return really costs, which product categories lose money after returns, and whether a return fee or restocking fee would pay. Free…", "pages": 2, "launched": "2026-10-02" }, { "slug": "rev-rec", "name": "Rev Rec — Stripe deferred revenue schedule, self-hosted", "url": "https://marisstella.app/rev-rec/", "category": "Self-hosted business apps", "description": "Turn Stripe invoices into a monthly revenue recognition schedule: billings, revenue recognised, deferred revenue and journal entries for your bookkeeper. Paste an invoice export…", "pages": 1, "launched": "2026-10-15" }, { "slug": "revenue-target-lead-planner", "name": "Revenue Target Lead Planner — free, private, in your browser", "url": "https://marisstella.app/revenue-target-lead-planner/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free revenue target lead planner for freelancers, agencies and small sales teams. Paste your past weeks or months of leads, deals won and revenue to see your real conversion rate…", "pages": 1, "launched": "2026-09-30" }, { "slug": "reverb-fee-calculator", "name": "Reverb Fee Calculator", "url": "https://marisstella.app/reverb-fee-calculator/", "category": "Marketplace seller tools", "description": "See what a Reverb sale leaves after fees, shipping and gear cost, and whether to take an offer, consign, take a shop cash offer or accept a partial refund.", "pages": 11, "launched": "2026-08-26" }, { "slug": "review-reply-desk", "name": "Review Reply Desk — reply to every review in minutes, free and private", "url": "https://marisstella.app/review-reply-desk/", "category": "Service business pricing & quotes", "description": "Free review response generator. Paste your Google, Yelp or Facebook reviews and get a ready-to-post reply to each one: rating-aware, specific, safe around legal, health-privacy…", "pages": 3, "launched": "2026-10-17" }, { "slug": "revolut-business-statement-to-journal", "name": "Revolut statement to Xero / QuickBooks journal with realised FX — free, private", "url": "https://marisstella.app/revolut-business-statement-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Revolut Business to QuickBooks and Xero journal converter for multi-currency balances: values every row in your base currency at your rates, tracks average cost, books…", "pages": 1, "launched": "2026-10-06" }, { "slug": "rfp-compliance-matrix", "name": "RFP Compliance Matrix Generator", "url": "https://marisstella.app/rfp-compliance-matrix/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Paste an RFP, RFQ or tender. Get a compliance matrix of every shall/must/required obligation with section numbers, categories and owner/status columns, plus the page limits, due…", "pages": 2, "launched": "2026-10-15" }, { "slug": "rmd-calculator", "name": "RMD Calculator — free, private, in your browser", "url": "https://marisstella.app/rmd-calculator/", "category": "Back-office money & contracts", "description": "Free RMD calculator for IRAs and 401(k)s. Get this year's required minimum distribution, a year-by-year projection, the cost of delaying the first RMD to April 1, qualified…", "pages": 1, "launched": "2026-09-29" }, { "slug": "roofing-bid-calculator", "name": "Roofing Bid Calculator", "url": "https://marisstella.app/roofing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a residential reroof from roof squares, pitch, waste, and tear-off layers — labor, material, dump, overhead, and the walk-away number. Free, runs in your browser.", "pages": 5, "launched": "2026-08-26" }, { "slug": "roofing-insurance-supplement-finder", "name": "What did the adjuster's roof estimate leave out? Free supplement finder", "url": "https://marisstella.app/roofing-insurance-supplement-finder/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Free roofing insurance supplement calculator: compare your measurement report with the adjuster's estimate, price missing drip edge, starter, steep-slope, waste and permit lines…", "pages": 1, "launched": "2026-10-08" }, { "slug": "roommate-rent-splitter", "name": "Roommate Rent Splitter — fair rent for unequal rooms", "url": "https://marisstella.app/roommate-rent-splitter/", "category": "Creator & solo earner income", "description": "Free roommate rent calculator for rooms that are not equal. Everyone says what each room is worth to them; the tool assigns rooms and sets rents that add up to the total so that…", "pages": 2, "launched": "2026-10-11" }, { "slug": "roth-conversion-bracket-fill-calculator", "name": "Roth Conversion Calculator 2026 — fill your bracket, free", "url": "https://marisstella.app/roth-conversion-bracket-fill-calculator/", "category": "Back-office money & contracts", "description": "Free 2026 Roth conversion calculator: see exactly how much to convert to fill the 12%, 22% or 24% bracket, the tax it costs, the 65+ senior-deduction phase-out and the Medicare…", "pages": 1, "launched": "2026-09-29" }, { "slug": "route-account-pruner", "name": "Route Account Pruner — free, private, in your browser", "url": "https://marisstella.app/route-account-pruner/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free tool for lawn, pool, pest, cleaning and other recurring route businesses. Paste your accounts (price, visits, minutes on site, drive minutes) to rank them by profit per route…", "pages": 1, "launched": "2026-09-30" }, { "slug": "route-stop-optimizer", "name": "Route Stop Optimizer — free, private, in your browser", "url": "https://marisstella.app/route-stop-optimizer/", "category": "Logistics, freight & cloud cost", "description": "Free route optimizer for service businesses, couriers and sales reps. Paste your stops with service times and customer time windows to get the order that cuts drive time, split…", "pages": 1, "launched": "2026-09-30" }, { "slug": "rsu-withholding-gap-calculator", "name": "RSU Tax Withholding Calculator 2026 — is 22% enough?", "url": "https://marisstella.app/rsu-withholding-gap-calculator/", "category": "Back-office money & contracts", "description": "Free 2026 RSU withholding calculator: see how much federal tax your vest really adds versus the flat 22% your employer withholds, the shortfall you will owe in April, and the…", "pages": 1, "launched": "2026-09-29" }, { "slug": "rule-72t-sepp-calculator", "name": "Rule 72(t) SEPP Calculator — free, private, in your browser", "url": "https://marisstella.app/rule-72t-sepp-calculator/", "category": "Back-office money & contracts", "description": "Free Rule 72(t) SEPP calculator. Enter your age, IRA balance and interest rate to see substantially equal periodic payments under the RMD method and fixed amortization, how long…", "pages": 1, "launched": "2026-09-30" }, { "slug": "rush-job-sequencer", "name": "Rush job sequencer", "url": "https://marisstella.app/rush-job-sequencer/", "category": "Creator & solo earner income", "description": "Free job sequencing tool for small shops: list your jobs with hours, due times and late penalties, and get the order with the lowest total lateness cost, checked exactly, plus…", "pages": 1, "launched": "2026-10-09" }, { "slug": "rv-boat-storage-lot-calculator", "name": "RV and boat storage lot calculator: will the lot pay back? Free, private", "url": "https://marisstella.app/rv-boat-storage-lot-calculator/", "category": "Service business pricing & quotes", "description": "Free RV and boat storage lot calculator: acres, land and site cost, rent per space and occupancy become the number of spaces, net operating income, yield on cost, loan coverage…", "pages": 1, "launched": "2026-10-12" }, { "slug": "rv-rental-host-profit-calculator", "name": "RV rental profit calculator: is renting out your camper worth it? Free, private", "url": "https://marisstella.app/rv-rental-host-profit-calculator/", "category": "Marketplace seller tools", "description": "Free profit calculator for people who rent out an RV, camper or trailer: nightly rate, nights booked, platform fee, cleaning, wear, loan, insurance, storage and depreciation…", "pages": 1, "launched": "2026-10-06" }, { "slug": "s-corp-basis-tracker", "name": "S-Corp Shareholder Basis Tracker — free, private, in your browser", "url": "https://marisstella.app/s-corp-basis-tracker/", "category": "Compliance checks & evidence records", "description": "Free S corporation shareholder basis calculator. Enter each year's K-1 figures and get stock basis, debt basis and suspended losses carried forward in Form 7203 order, with…", "pages": 6, "launched": "2026-10-17" }, { "slug": "s-corp-reasonable-compensation-calculator", "name": "S-Corp Reasonable Compensation Calculator", "url": "https://marisstella.app/s-corp-reasonable-compensation-calculator/", "category": "Back-office money & contracts", "description": "Free browser calculator for single-shareholder S-corp owners: compare your planned W-2 salary against a comparable-wage figure you supply, see the FICA-tax cost of closing the…", "pages": 4, "launched": "2026-09-24" }, { "slug": "s3-bucket-exposure-check", "name": "S3 Bucket Exposure Checker", "url": "https://marisstella.app/s3-bucket-exposure-check/", "category": "CI checks & developer gates", "description": "Free tool: paste an S3 bucket name and it sends two real, unsigned GET requests -- one asking the bucket to list its own contents, one asking to read its ACL -- to name whether…", "pages": 3, "launched": "2026-09-23" }, { "slug": "s3-storage-class-advisor", "name": "Is your S3 bucket in the wrong storage class?", "url": "https://marisstella.app/s3-storage-class-advisor/", "category": "CI checks & developer gates", "description": "Paste per-bucket S3 size, object count and read activity and see the monthly cost in Standard, Standard-IA, Intelligent-Tiering and Glacier Instant Retrieval, with the…", "pages": 2, "launched": "2026-10-02" }, { "slug": "s3-storage-class-savings", "name": "Will an S3 lifecycle rule actually save money?", "url": "https://marisstella.app/s3-storage-class-savings/", "category": "CI checks & developer gates", "description": "Paste an S3 Inventory CSV and see current monthly cost by storage class and the net 12-month saving of moving objects to Standard-IA, Glacier or Intelligent-Tiering after…", "pages": 2, "launched": "2026-10-01" }, { "slug": "saas-annual-plan-discount-calculator", "name": "SaaS Annual Plan Discount Calculator — break-even prepay discount, free", "url": "https://marisstella.app/saas-annual-plan-discount-calculator/", "category": "Back-office money & contracts", "description": "Free SaaS annual plan discount calculator: find the annual-prepay discount you can offer before it costs more than it brings in, given gross margin, monthly churn, renewal rate…", "pages": 1, "launched": "2026-09-29" }, { "slug": "saas-cac-payback-calculator", "name": "SaaS CAC Payback Calculator — churn-adjusted payback and LTV:CAC, free", "url": "https://marisstella.app/saas-cac-payback-calculator/", "category": "Back-office money & contracts", "description": "Free SaaS CAC payback calculator: churn-adjusted payback months, LTV, LTV:CAC and the most you can spend to acquire a customer for a target payback. Runs in your browser, nothing…", "pages": 1, "launched": "2026-09-29" }, { "slug": "saas-efficiency-metrics-calculator", "name": "SaaS burn multiple, magic number and Rule of 40 calculator, free", "url": "https://marisstella.app/saas-efficiency-metrics-calculator/", "category": "Back-office money & contracts", "description": "Free SaaS efficiency calculator: burn multiple, magic number, Rule of 40 and runway from your quarterly numbers, with benchmark bands and what it takes to reach a 1.5 burn…", "pages": 1, "launched": "2026-10-03" }, { "slug": "saas-feature-packaging-optimizer", "name": "SaaS feature packaging optimizer", "url": "https://marisstella.app/saas-feature-packaging-optimizer/", "category": "Service business pricing & quotes", "description": "Free SaaS packaging tool: paste what surveyed customers would pay for each feature and get which features belong in which plan, the plan prices that earn the most profit, who…", "pages": 1, "launched": "2026-10-09" }, { "slug": "saas-renewal-planner", "name": "Which SaaS renewals should you negotiate first, and by when?", "url": "https://marisstella.app/saas-renewal-planner/", "category": "Back-office money & contracts", "description": "Paste your SaaS subscriptions and get the last day to give notice before each auto-renewal, which renewals to negotiate first, a floor and stretch target price, a calendar file…", "pages": 2, "launched": "2026-10-02" }, { "slug": "saas-seat-true-up", "name": "SaaS seat true-up calculator", "url": "https://marisstella.app/saas-seat-true-up/", "category": "Back-office money & contracts", "description": "Calculate unused SaaS seats and avoidable renewal spend privately in your browser. No account or upload required.", "pages": 5, "launched": "2026-08-26" }, { "slug": "saas-tier-price-optimizer", "name": "SaaS tier price optimizer", "url": "https://marisstella.app/saas-tier-price-optimizer/", "category": "Service business pricing & quotes", "description": "Free SaaS pricing tool: paste what surveyed customers would pay for each plan and get the Good-Better-Best prices that earn the most profit, who lands on each plan, and what you…", "pages": 1, "launched": "2026-10-09" }, { "slug": "safe-dilution-calculator", "name": "SAFE Dilution Calculator — free, private, no signup", "url": "https://marisstella.app/safe-dilution-calculator/", "category": "Back-office money & contracts", "description": "Free SAFE dilution calculator for startup founders. Model post-money and pre-money SAFEs with caps and discounts converting in a priced round with an option pool top-up: your cap…", "pages": 1, "launched": "2026-09-30" }, { "slug": "saints-by-candlelight", "name": "Saints by Candlelight: a free bedtime podcast of saints, angels and Bible stories", "url": "https://marisstella.app/saints-by-candlelight/", "category": "Learning & practice", "description": "Free bedtime story podcast of Catholic and Orthodox saints, angels and patriarchs: lighthearted, faithful, 30 to 60 minute episodes with full scripts and an honest note on what is…", "pages": 63, "launched": "2026-10-20" }, { "slug": "salary-range-posting-check", "name": "Does your job posting state a pay range?", "url": "https://marisstella.app/salary-range-posting-check/", "category": "Compliance checks & evidence records", "description": "Paste a job posting and pick the states it could be filled from. Instantly see whether the text appears to state a pay range, and which of those states currently require one by…", "pages": 3, "launched": "2026-09-24" }, { "slug": "sales-agent", "name": "Sales Agent — sort sales replies, update your list, approve the drafts", "url": "https://marisstella.app/sales-agent/", "category": "Creator & solo earner income", "description": "Free AI sales agent for the replies to your outreach. Paste them in: it spots unsubscribes, bounces, out-of-office and not-now replies, updates your list, and drafts answers to…", "pages": 2, "launched": "2026-10-21" }, { "slug": "sales-cadence-builder", "name": "Sales Cadence Builder — a prospecting sequence for every lead, checked before you send", "url": "https://marisstella.app/sales-cadence-builder/", "category": "Creator & solo earner income", "description": "Free sales cadence builder and outreach sequence planner. Paste your prospect list and get a multi-channel cadence (email, phone call with voicemail script, LinkedIn note, mailed…", "pages": 2, "launched": "2026-10-20" }, { "slug": "sales-call-notes-desk", "name": "Sales Call Notes Desk — notes in, CRM fields and follow-up out, free and private", "url": "https://marisstella.app/sales-call-notes-desk/", "category": "Compliance checks & evidence records", "description": "Free sales call notes to CRM tool. Paste your notes or transcript and get the CRM fields, what BANT and MEDDIC still miss, dated next steps and a checked follow-up email. Runs in…", "pages": 2, "launched": "2026-10-17" }, { "slug": "sales-commission-plan-comparison-calculator", "name": "Sales Commission Plan Comparison Calculator — free, private, in your browser", "url": "https://marisstella.app/sales-commission-plan-comparison-calculator/", "category": "Back-office money & contracts", "description": "Free sales commission plan comparison calculator. Enter two offers with base, target variable, threshold, accelerator, cap, signing bonus and ramp, and see pay at every quota…", "pages": 1, "launched": "2026-09-30" }, { "slug": "sales-export-to-journal", "name": "Any sales export to a Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/sales-export-to-journal/", "category": "Compliance checks & evidence records", "description": "Free sales export to journal converter for Airbnb, Amazon, eBay, Etsy, Gumroad, DistroKid, YouTube AdSense, Amazon KDP, PayPal, Shopify, Square and Stripe: drop the CSV, the page…", "pages": 1, "launched": "2026-10-05" }, { "slug": "sales-quota-capacity-planner", "name": "Sales Quota Capacity Planner", "url": "https://marisstella.app/sales-quota-capacity-planner/", "category": "Service business pricing & quotes", "description": "How many quota-carrying reps must you hire, and by when, to hit next year's bookings target? Month-by-month ramped capacity, attrition, hiring lead time, a latest-start date per…", "pages": 1, "launched": "2026-10-12" }, { "slug": "sales-seasonality-forecaster", "name": "Sales Seasonality Forecaster — free, private, in your browser", "url": "https://marisstella.app/sales-seasonality-forecaster/", "category": "Back-office money & contracts", "description": "Free seasonal sales forecaster for small shops and restaurants. Paste your monthly sales to get a 12-month forecast with ranges, your slow and peak months, a back-test against…", "pages": 1, "launched": "2026-09-30" }, { "slug": "salesforce-lead-import-csv-check", "name": "Salesforce Lead Import CSV Check — free, private, in your browser", "url": "https://marisstella.app/salesforce-lead-import-csv-check/", "category": "Compliance checks & evidence records", "description": "Catch what makes Salesforce reject or duplicate imported leads, with the line number, before you run the import. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "salt-cap-calculator", "name": "SALT Deduction Cap Calculator — free, 2025-2026", "url": "https://marisstella.app/salt-cap-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the SALT (state and local tax) itemized deduction cap under the One Big Beautiful Bill Act — applies the 2025/2026 $40,000/$40,400 cap, the 30%-of-excess-MAGI…", "pages": 3, "launched": "2026-09-25" }, { "slug": "sauna-cold-plunge-install-bid-calculator", "name": "What should I bid on a backyard sauna or cold plunge install? Free calculator", "url": "https://marisstella.app/sauna-cold-plunge-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Free sauna and cold plunge install bid calculator: build and prep hours, crew pay, equipment and materials, electrician subcontract, drive and target margin in; a bid price…", "pages": 1, "launched": "2026-10-08" }, { "slug": "sawmill-custom-sawing-calculator", "name": "Sawmill Custom Sawing Calculator — free, private", "url": "https://marisstella.app/sawmill-custom-sawing-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free custom sawing rate calculator for portable sawmill operators: true cost per sawing hour, break-even and target quote per board foot or per hour, and which log sizes lose…", "pages": 1, "launched": "2026-10-10" }, { "slug": "sba-loan-capacity-calculator", "name": "How much SBA loan can your business carry? Free DSCR loan sizer", "url": "https://marisstella.app/sba-loan-capacity-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free SBA loan capacity calculator. Enter cash flow, existing debt, rate, term and fees; see the largest loan a 1.25x DSCR supports, your coverage on the loan you want, and what a…", "pages": 1, "launched": "2026-10-07" }, { "slug": "sbir-budget-builder", "name": "SBIR / STTR budget builder", "url": "https://marisstella.app/sbir-budget-builder/", "category": "Service business pricing & quotes", "description": "Free SBIR and STTR proposal budget builder: personnel, fringe, MTDC indirect, subawards and fee in SF424 R&R lines, with checks on the small-business share of work, the STTR…", "pages": 1, "launched": "2026-10-09" }, { "slug": "sbom-diff-check", "name": "What changed between two SBOMs?", "url": "https://marisstella.app/sbom-diff-check/", "category": "CI checks & developer gates", "description": "Paste two CycloneDX or SPDX SBOM JSON files and see exactly which packages were added, removed, or changed version between two builds. Free, runs in your browser, nothing uploaded.", "pages": 4, "launched": "2026-09-16" }, { "slug": "schengen-90-180-day-calculator", "name": "Schengen 90/180 day calculator: days left and last exit date. Free, private", "url": "https://marisstella.app/schengen-90-180-day-calculator/", "category": "Creator & solo earner income", "description": "Free Schengen 90/180 day rule calculator: paste your past stays to see days used and left, the date your allowance returns, the longest trip from a planned entry date and your…", "pages": 1, "launched": "2026-10-13" }, { "slug": "scope-creep-change-order-calculator", "name": "Scope Creep Change Order Calculator — price the extra requests", "url": "https://marisstella.app/scope-creep-change-order-calculator/", "category": "Back-office money & contracts", "description": "Price a client's extra requests on a fixed-price project as a change order, see what absorbing them would cost your hourly rate, and copy a client-ready message. Free, private…", "pages": 2, "launched": "2026-10-03" }, { "slug": "scrap-gold-buy-price-calculator", "name": "Scrap gold buy price calculator for buyers", "url": "https://marisstella.app/scrap-gold-buy-price-calculator/", "category": "Service business pricing & quotes", "description": "Free scrap gold buying calculator for pawn shops and estate buyers: type the karat and weight of each piece and your refiner's terms to see the highest offer that still pays after…", "pages": 1, "launched": "2026-10-09" }, { "slug": "scrap-metal-yard-payout-calculator", "name": "Scrap Metal Yard Payout Calculator — which yard nets more, split the load, strip the wire", "url": "https://marisstella.app/scrap-metal-yard-payout-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free scrap metal calculator: type your lots, each yard's per-pound or per-ton prices, the miles and minutes to get there, and see what the load nets at each yard after fuel, time…", "pages": 2, "launched": "2026-10-12" }, { "slug": "screen-print-job-quote-calculator", "name": "Screen Print Job Quote Calculator — free, private", "url": "https://marisstella.app/screen-print-job-quote-calculator/", "category": "Service business pricing & quotes", "description": "Free screen printing quote calculator: price per piece from blanks, screens, ink and press time, a price-break ladder, and the smallest order that pays at your current price. Runs…", "pages": 1, "launched": "2026-10-10" }, { "slug": "screened-porch-bid-calculator", "name": "Screened Porch Bid Calculator", "url": "https://marisstella.app/screened-porch-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a residential screened porch or lanai from the wall-screen square feet a floor-square-foot special cannot see, the knee wall, the roof, and the mesh — plus walk-away price…", "pages": 4, "launched": "2026-08-26" }, { "slug": "search-api-pricing-calculator", "name": "What will hosted search cost for your records and monthly searches, and who is cheapest?", "url": "https://marisstella.app/search-api-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter your record count and monthly searches and see what Algolia, Meilisearch Cloud, Typesense Cloud, Elastic Cloud and a self-hosted box cost, the 12-month spend under your…", "pages": 2, "launched": "2026-10-04" }, { "slug": "seasonal-buy-quantity-optimizer", "name": "Seasonal Buy Quantity Optimizer — free, private, in your browser", "url": "https://marisstella.app/seasonal-buy-quantity-optimizer/", "category": "Back-office money & contracts", "description": "Free newsvendor calculator for sellers of seasonal, holiday and one-time products. Enter past seasons or a low, likely and high guess, your price, cost and supplier price breaks…", "pages": 1, "launched": "2026-09-30" }, { "slug": "secret-santa-draw", "name": "Secret Santa Draw — free, private, in your browser", "url": "https://marisstella.app/secret-santa-draw/", "category": "Restaurant, bar & food truck pricing", "description": "Free Secret Santa generator with no sign-up and no emails. Keep couples apart, skip last year's pairs, forbid swaps or force one big loop, and let the organizer play without…", "pages": 4, "launched": "2026-10-11" }, { "slug": "section-1256-futures-tax-calculator", "name": "Section 1256 60/40 futures tax calculator — free, private", "url": "https://marisstella.app/section-1256-futures-tax-calculator/", "category": "Creator & solo earner income", "description": "Free Section 1256 60/40 tax calculator for futures and index option traders: enter Form 1099-B boxes 8, 9 and 10, see the aggregate, the 60% long-term and 40% short-term split…", "pages": 1, "launched": "2026-10-08" }, { "slug": "section-174a-catchup-calculator", "name": "Section 174A Catch-Up Calculator — 1-year vs. 2-year, free", "url": "https://marisstella.app/section-174a-catchup-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the Section 174A domestic R&E catch-up deduction (OBBBA, Rev.", "pages": 3, "launched": "2026-09-25" }, { "slug": "section-83b-election-calculator", "name": "83(b) Election Calculator — free, private, in your browser", "url": "https://marisstella.app/section-83b-election-calculator/", "category": "Back-office money & contracts", "description": "Free 83(b) election calculator for founders and startup employees with vesting stock. See tax due at grant, tax at each vest date, the break-even sale value, the tax wasted if you…", "pages": 1, "launched": "2026-09-30" }, { "slug": "security-camera-bid-calculator", "name": "Security Camera Installation Bid Calculator", "url": "https://marisstella.app/security-camera-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price an IP security camera install from the drops, the cable, and the labour — and check the three things a camera bid gets wrong: days of recording the drives actually hold, PoE…", "pages": 5, "launched": "2026-08-28" }, { "slug": "security-deposit-return-calculator", "name": "Security Deposit Refund & Prorated Rent Calculator — free, no sign-up", "url": "https://marisstella.app/security-deposit-return-calculator/", "category": "Back-office money & contracts", "description": "Free security deposit refund calculator: itemize deductions against a tenant's deposit and see the refund or balance due. Plus a prorated rent calculator for a partial first or…", "pages": 4, "launched": "2026-09-08" }, { "slug": "security-headers-check", "name": "Security Headers Checker", "url": "https://marisstella.app/security-headers-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends one real request to your site, then paste the JSON here for a plain-English report on missing clickjacking protection, X-Frame-Options: ALLOW-FROM…", "pages": 4, "launched": "2026-09-10" }, { "slug": "security-questionnaire-matcher", "name": "Security Questionnaire Answer Matcher", "url": "https://marisstella.app/security-questionnaire-matcher/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Paste a customer security questionnaire and your saved answers. Each question is matched to your closest past answer, risky matches (changed hours, negations) are flagged, and…", "pages": 2, "launched": "2026-10-15" }, { "slug": "security-txt-check", "name": "security.txt Checker (RFC 9116)", "url": "https://marisstella.app/security-txt-check/", "category": "CI checks & developer gates", "description": "Checks a security.txt against RFC 9116 — including the expiry date that quietly turns a valid file into a stale one, which is the state most published security.txt files are in.", "pages": 4, "launched": "2026-09-16" }, { "slug": "self-employed-health-insurance-deduction-calculator", "name": "Self-Employed Health Insurance Deduction Calculator — free, private, in your browser", "url": "https://marisstella.app/self-employed-health-insurance-deduction-calculator/", "category": "Back-office money & contracts", "description": "Free self-employed health insurance deduction calculator. Enter net profit and premiums to see the Schedule 1 deduction after the profit ceiling, employer-plan months and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "self-employed-schedule-c-categorizer", "name": "Self-Employed Schedule C Categorizer — free, private, in your browser", "url": "https://marisstella.app/self-employed-schedule-c-categorizer/", "category": "Back-office money & contracts", "description": "Free tool for freelancers, sole proprietors and gig workers: drop in your bank or card CSV and get income and expenses sorted into Schedule C lines, with estimated-tax payments…", "pages": 1, "launched": "2026-09-29" }, { "slug": "self-employment-tax-calculator", "name": "Self-Employment Tax Calculator 2026 — free, in your browser", "url": "https://marisstella.app/self-employment-tax-calculator/", "category": "Back-office money & contracts", "description": "Free 2026 self-employment tax calculator for freelancers and sole proprietors: Social Security and Medicare, the $184,500 wage base, W-2 wages, Additional Medicare Tax, and how…", "pages": 1, "launched": "2026-09-29" }, { "slug": "self-hosted-saas-stack", "name": "Self-Hosted SaaS Stack: Open-Source Alternatives to Calendly, Sentry, LaunchDarkly and Help Scout", "url": "https://marisstella.app/self-hosted-saas-stack/", "category": "Self-hosted business apps", "description": "28 open-source, self-hosted tools that replace the small-SaaS subscriptions a founder pays for: booking, help center, error tracking, feature flags, analytics, email, referrals…", "pages": 1, "launched": "2026-10-16" }, { "slug": "self-serve-dog-wash-profit-calculator", "name": "Self-serve dog wash calculator: how many washes a day to break even? Free, private", "url": "https://marisstella.app/self-serve-dog-wash-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free self-serve and full-service dog wash calculator: tubs, wash price, washes per tub by weekday, weekend and season, water, supplies, labor, build-out and a loan become…", "pages": 1, "launched": "2026-10-12" }, { "slug": "self-storage-rate-increase-calculator", "name": "Self-Storage Rate Increase Calculator", "url": "https://marisstella.app/self-storage-rate-increase-calculator/", "category": "Back-office money & contracts", "description": "Price an existing-customer rate increase (ECRI) at your storage facility: what one induced move-out really costs once the unit re-rents at street rate, and the move-out rate at…", "pages": 4, "launched": "2026-09-10" }, { "slug": "self-storage-unit-mix-optimizer", "name": "Self-storage unit mix optimizer", "url": "https://marisstella.app/self-storage-unit-mix-optimizer/", "category": "Logistics, freight & cloud cost", "description": "Free self-storage unit mix optimizer: enter rentable square feet, rates, occupancy and demand limits per unit size to find the mix that earns the most net operating income, and…", "pages": 1, "launched": "2026-10-09" }, { "slug": "seller-net-sheet", "name": "Seller Net Sheet Calculator", "url": "https://marisstella.app/seller-net-sheet/", "category": "Back-office money & contracts", "description": "Free seller net sheet: see cash at closing after listing commission, optional buyer-broker compensation, concessions, title, and payoff. Compare two offers — the higher price is…", "pages": 7, "launched": "2026-08-26" }, { "slug": "senior-deduction-calculator", "name": "Senior Deduction Calculator — free OBBBA $6,000 estimator", "url": "https://marisstella.app/senior-deduction-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the new federal 'senior bonus' deduction (One Big Beautiful Bill Act, tax years 2025-2028): up to $6,000 per qualifying taxpayer age 65+ ($12,000 if both…", "pages": 3, "launched": "2026-09-24" }, { "slug": "sep-ira-contribution-calculator", "name": "SEP-IRA Contribution Calculator — free, 2026", "url": "https://marisstella.app/sep-ira-contribution-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for the 2026 SEP-IRA contribution limit for a sole proprietor or single-member LLC — 20% of net self-employment earnings (the self-employed equivalent of the 25%…", "pages": 1, "launched": "2026-09-28" }, { "slug": "sep-ira-vs-solo-401k-calculator", "name": "SEP-IRA vs Solo 401(k) Calculator — free, 2026", "url": "https://marisstella.app/sep-ira-vs-solo-401k-calculator/", "category": "Back-office money & contracts", "description": "Free 2026 calculator comparing a SEP-IRA and a Solo 401(k) for a sole proprietor or single-member LLC: how much each lets you contribute, the dollar gap, the tax it is worth at…", "pages": 1, "launched": "2026-10-05" }, { "slug": "sepa-pain001-validator", "name": "SEPA pain.001 Validator — free, private, in your browser", "url": "https://marisstella.app/sepa-pain001-validator/", "category": "Back-office money & contracts", "description": "Free SEPA XML checker for pain.001 credit transfer and pain.008 direct debit files: recomputes NbOfTxs and CtrlSum, checks IBAN and BIC, EUR, TARGET2 execution dates, field…", "pages": 1, "launched": "2026-10-04" }, { "slug": "sepa-pain002-status-reader", "name": "SEPA pain.002 Status Reader — free, private, in your browser", "url": "https://marisstella.app/sepa-pain002-status-reader/", "category": "Back-office money & contracts", "description": "Free SEPA pain.002 reader: which payments your bank rejected, what each code (AC04, AM04, MD01) means, what to fix. In your browser.", "pages": 1, "launched": "2026-10-04" }, { "slug": "sepa-payment-file-validator", "name": "SEPA Payment File Validator — free, private, in your browser", "url": "https://marisstella.app/sepa-payment-file-validator/", "category": "Back-office money & contracts", "description": "Free SEPA credit transfer file checker for pain.001 XML: finds invalid IBANs, wrong NbOfTxs and CtrlSum, bad execution dates, characters the bank will reject and malformed XML…", "pages": 1, "launched": "2026-10-04" }, { "slug": "septic-pumping-bid-calculator", "name": "Septic Pumping Bid Calculator", "url": "https://marisstella.app/septic-pumping-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a septic tank pump from buried lids, hose run, extra tanks, baffles, risers, inspection, dump tickets, and after-hours dispatch — not a published $325 pump special. See the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "service-hourly-yield-analyzer", "name": "Service Hourly Yield Analyzer — free, private, in your browser", "url": "https://marisstella.app/service-hourly-yield-analyzer/", "category": "Back-office money & contracts", "description": "Free tool for salons, barbers, spas, trainers, tutors and detailers: drop in your booking or sales export and see revenue per booked hour by service, stylist, weekday and hour…", "pages": 1, "launched": "2026-09-29" }, { "slug": "service-van-stock-optimizer", "name": "Service Van Stock Optimizer — free, private, in your browser", "url": "https://marisstella.app/service-van-stock-optimizer/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free truck stock planner for HVAC, plumbing, electrical and appliance technicians. Paste your parts list and past jobs to get the van inventory that finishes the most jobs on the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "severance-package-calculator", "name": "Severance package calculator", "url": "https://marisstella.app/severance-package-calculator/", "category": "Marketplace seller tools", "description": "Free severance package calculator: compare your offer to the usual weeks per year of service, see your net as a lump sum now, a lump sum in January or salary continuation, the…", "pages": 1, "launched": "2026-10-08" }, { "slug": "sewer-hydrojet-bid-calculator", "name": "Hydro-Jet and Sewer Camera Bid Calculator", "url": "https://marisstella.app/sewer-hydrojet-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a sewer camera inspection or hydro-jet from extra footage past the included run, cleanout versus toilet pull, roots and grease, hose distance from the truck, and a camera…", "pages": 4, "launched": "2026-08-26" }, { "slug": "sewer-line-replace-bid-calculator", "name": "Sewer Line Replacement Bid Calculator", "url": "https://marisstella.app/sewer-line-replace-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a sewer line replacement from open-cut, pipe bursting, or CIPP lining: footage, bury depth, laterals, and the surface you have to put back — not a published $125-a-foot…", "pages": 4, "launched": "2026-08-26" }, { "slug": "sg-freelancer-tax-set-aside-calculator", "name": "Singapore Freelancer Tax Set-Aside Calculator. Free, private", "url": "https://marisstella.app/sg-freelancer-tax-set-aside-calculator/", "category": "Back-office money & contracts", "description": "Free Singapore freelancer tax calculator: enter income and expenses to see income tax after earned income relief, a MediSave flag and how much of every invoice to set aside. Runs…", "pages": 1, "launched": "2026-10-14" }, { "slug": "shared-kitchen-rate-planner", "name": "What should a shared kitchen charge per hour? Free planner", "url": "https://marisstella.app/shared-kitchen-rate-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free planner for shared and commissary kitchen owners. Enter rent, costs, stations, hourly rate and memberships; get break-even rate, break-even utilization, member effective rate…", "pages": 1, "launched": "2026-10-07" }, { "slug": "shaved-ice-stand-profit-calculator", "name": "Shaved Ice Stand Profit Calculator — free, private", "url": "https://marisstella.app/shaved-ice-stand-profit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free calculator for shaved ice, lemonade and frozen-treat stands: margin per cup by size, cups to break even, profit on a hot, normal and rainy day, and the most booth fee an…", "pages": 1, "launched": "2026-10-10" }, { "slug": "shed-designer", "name": "Shed Designer: drag out a gable shed, get the plans and the cut list", "url": "https://marisstella.app/shed-designer/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Design a gable shed by dragging: get framing plans for the foundation, floor, four walls and roof, a 3D view, a lumber cut sheet using real 2x4 to 2x12 sizes and 8 to 16 ft…", "pages": 22, "launched": "2026-10-29" }, { "slug": "shed-install-bid-calculator", "name": "Shed Install Bid Calculator", "url": "https://marisstella.app/shed-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Concrete, masonry & site work", "description": "Price a backyard shed install from pad, delivery miles, crane versus forklift, and extras — plus the walk-away price a $2,499 drop-and-set special cannot see.", "pages": 4, "launched": "2026-08-26" }, { "slug": "sheep-goat-flock-profit-planner", "name": "Is raising sheep or goats profitable? Free flock profit planner", "url": "https://marisstella.app/sheep-goat-flock-profit-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free sheep and goat farm profit calculator. Project your flock, lambs or kids sold, hay cost and profit year by year; see what weaning rate, hay price and market price do, plus…", "pages": 1, "launched": "2026-10-07" }, { "slug": "shift-cover-optimizer", "name": "Shift-Cover Optimizer — free, private, in your browser", "url": "https://marisstella.app/shift-cover-optimizer/", "category": "Restaurant, bar & food truck pricing", "description": "Free staff scheduling calculator for restaurants, cafes, salons and shops. Paste the staff or demand each open hour needs to get the cheapest set of shifts that covers every hour…", "pages": 1, "launched": "2026-09-30" }, { "slug": "shift-roster-builder", "name": "Shift Roster Builder — free, private, in your browser", "url": "https://marisstella.app/shift-roster-builder/", "category": "Restaurant, bar & food truck pricing", "description": "Free employee schedule maker for restaurants, cafes, salons, shops and clinics. List the shifts to cover and your staff's availability, hour limits and wages; get a weekly roster…", "pages": 20, "launched": "2026-10-01" }, { "slug": "shift-rotation-schedule-generator", "name": "Rotating shift schedule to calendar, in your browser", "url": "https://marisstella.app/shift-rotation-schedule-generator/", "category": "Restaurant, bar & food truck pricing", "description": "Generate a rotating shift schedule for Pitman 2-2-3, 4-on-4-off, 3-on-3-off, DuPont and 24/48 patterns: see hours per week, weekends off and days off per year, find your crew, and…", "pages": 2, "launched": "2026-10-12" }, { "slug": "shipping-box-size-optimizer", "name": "Shipping Box Size Optimizer — free, private, in your browser", "url": "https://marisstella.app/shipping-box-size-optimizer/", "category": "Logistics, freight & cloud cost", "description": "Free shipping box size optimizer for online sellers. Enter your products and the cartons you could buy; it solves which 1 to 10 box sizes to stock so every order ships in its…", "pages": 2, "launched": "2026-10-01" }, { "slug": "shoe-repair-shop-profit-calculator", "name": "Shoe Repair Shop Profit Calculator — free, private", "url": "https://marisstella.app/shoe-repair-shop-profit-calculator/", "category": "Marketplace seller tools", "description": "Free shoe repair shop calculator: enter heel, repair and rework prices, bench minutes, supplies, cobbler pay and rent, and see profit per job and per bench hour, break-even volume…", "pages": 1, "launched": "2026-10-11" }, { "slug": "shop-rate-calculator", "name": "Shop Rate Calculator", "url": "https://marisstella.app/shop-rate-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Work out your real labor burden, your overhead rate on direct cost, and the hourly rate a trade job has to be sold at — from your own payroll, vehicles, office and materials…", "pages": 5, "launched": "2026-08-28" }, { "slug": "shopify-a11y-evidence", "name": "Shopify Accessibility Evidence Report", "url": "https://marisstella.app/shopify-a11y-evidence/", "category": "Compliance checks & evidence records", "description": "Turn a Shopify storefront's axe-core JSON export into a dated, readable accessibility evidence record. Runs locally in your browser.", "pages": 5, "launched": "2026-08-24" }, { "slug": "shopify-customer-csv-check", "name": "Shopify Customer CSV Check — free, private, in your browser", "url": "https://marisstella.app/shopify-customer-csv-check/", "category": "Marketplace seller tools", "description": "Catch what breaks a Shopify customer import, with the line number, before you import. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "shopify-discount-leakage-analyzer", "name": "Shopify Discount Leakage Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/shopify-discount-leakage-analyzer/", "category": "Marketplace seller tools", "description": "Free Shopify discount code analyzer: drop in your orders export and see how much each code gave away, the share of its orders that must be new sales to pay for itself, refund…", "pages": 1, "launched": "2026-09-29" }, { "slug": "shopify-fee-calculator", "name": "Shopify Fee Calculator — Payments vs PayPal, plan upgrade volume", "url": "https://marisstella.app/shopify-fee-calculator/", "category": "Marketplace seller tools", "description": "Free Shopify fee calculator: see order profit after Shopify Payments or PayPal/Stripe, including the extra Shopify third-party transaction fee. Then compare Basic, Grow, Advanced…", "pages": 22, "launched": "2026-08-24" }, { "slug": "shopify-inventory-csv-check", "name": "Shopify Inventory CSV Check — free, private, in your browser", "url": "https://marisstella.app/shopify-inventory-csv-check/", "category": "Marketplace seller tools", "description": "Catch what makes a Shopify inventory import update nothing or set the wrong stock, with the line number, before you import. Nothing leaves your device.", "pages": 1, "launched": "2026-10-04" }, { "slug": "shopify-inventory-reorder-planner", "name": "Inventory Reorder Planner — free, private, CSV in your browser", "url": "https://marisstella.app/shopify-inventory-reorder-planner/", "category": "Marketplace seller tools", "description": "Free reorder planner for Shopify and other small online stores: load an orders export and a stock export and see each SKU's reorder point, how many to order, revenue at risk from…", "pages": 1, "launched": "2026-09-29" }, { "slug": "shopify-payments-fee-analyzer", "name": "Shopify Payments Fee Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/shopify-payments-fee-analyzer/", "category": "Marketplace seller tools", "description": "Free Shopify Payments fee analyzer: drop in your Transactions export CSV and see your real effective rate, fees by card brand and card source, refund and chargeback cost, and…", "pages": 1, "launched": "2026-09-29" }, { "slug": "shopify-payout-profit-analyzer", "name": "Shopify Payout Profit Analyzer — free, private, CSVs in your browser", "url": "https://marisstella.app/shopify-payout-profit-analyzer/", "category": "Marketplace seller tools", "description": "Free Shopify payout analyzer: drop in your Shopify Payments Transactions CSV and Orders export and get a fee waterfall, net to bank per order, profit per product, discount code…", "pages": 1, "launched": "2026-09-29" }, { "slug": "shopify-payout-to-journal", "name": "Shopify payout report to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/shopify-payout-to-journal/", "category": "Marketplace seller tools", "description": "Free Shopify payout to journal converter: proves the transactions add up to the payout, splits gross sales, Shopify Payments fees, refunds, chargebacks and shipping labels by…", "pages": 1, "launched": "2026-10-05" }, { "slug": "shopify-permission-drift", "name": "Shopify Permission Drift Record — compare app scopes and webhooks", "url": "https://marisstella.app/shopify-permission-drift/", "category": "Compliance checks & evidence records", "description": "Free Shopify permission drift checker: paste two customer-authorized app inventory exports and see which scopes, webhooks, or authorization states changed. Runs in your browser —…", "pages": 3, "launched": "2026-08-24" }, { "slug": "shopify-product-csv-check", "name": "Shopify Product CSV Check — free, private, in your browser", "url": "https://marisstella.app/shopify-product-csv-check/", "category": "Marketplace seller tools", "description": "Free Shopify product CSV checker: finds blank handles, split products, duplicate variants, bad prices, wrong barcode check digits, broken image URLs, Excel-damaged SKUs and…", "pages": 1, "launched": "2026-10-04" }, { "slug": "shopify-to-woocommerce-converter", "name": "Shopify to WooCommerce Product CSV Converter — free, private, in your browser", "url": "https://marisstella.app/shopify-to-woocommerce-converter/", "category": "Marketplace seller tools", "description": "Free Shopify to WooCommerce product CSV converter: variants become variable products with variations, Compare At Price becomes Regular and Sale price, inventory, weight, images…", "pages": 1, "launched": "2026-10-04" }, { "slug": "siding-bid-calculator", "name": "Siding Bid Calculator", "url": "https://marisstella.app/siding-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a vinyl, fiber-cement, or engineered-wood siding job from wall area, waste, openings, stories, and tear-off — not a flat price per square foot. See labor hours, walk-away…", "pages": 4, "launched": "2026-08-26" }, { "slug": "sign-keeper", "name": "Sign Keeper — self-hosted e-signature with a verifiable certificate", "url": "https://marisstella.app/sign-keeper/", "category": "Self-hosted business apps", "description": "Send a signing link, collect a typed signature with consent, and keep a certificate anyone can re-verify. A free, open-source, self-hosted alternative to per-envelope e-signature…", "pages": 1, "launched": "2026-10-16" }, { "slug": "sign-language-interpreter-rate-calculator", "name": "Sign Language Interpreter Rate Calculator — free, no sign-up", "url": "https://marisstella.app/sign-language-interpreter-rate-calculator/", "category": "Service business pricing & quotes", "description": "Turn an assignment request's hours, travel, and setting into a defensible interpreting fee, plus a late-cancellation fee calculator. Entirely client-side.", "pages": 4, "launched": "2026-09-23" }, { "slug": "sign-shop-job-pricing-calculator", "name": "Sign shop job pricing calculator", "url": "https://marisstella.app/sign-shop-job-pricing-calculator/", "category": "Service business pricing & quotes", "description": "Free sign shop pricing calculator: enter size, quantity, material, print and install time and your shop rate to get the price that earns your margin, your break-even, and the…", "pages": 1, "launched": "2026-10-09" }, { "slug": "sitemap-lastmod-freshness-check", "name": "Sitemap lastmod Freshness Check", "url": "https://marisstella.app/sitemap-lastmod-freshness-check/", "category": "CI checks & developer gates", "description": "Paste a sitemap.xml and check its lastmod dates for the freshness-faking patterns Google warns about: bad formats, future dates and uniform dates. Nothing uploaded.", "pages": 3, "launched": "2026-09-11" }, { "slug": "ski-snowboard-tune-shop-profit-calculator", "name": "Ski and Snowboard Tune Shop Profit Calculator — free, private", "url": "https://marisstella.app/ski-snowboard-tune-shop-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free ski and snowboard tune shop calculator: enter tune prices, bench minutes, materials, technician pay, grinder and rent, and see profit per tune and per bench hour, break-even…", "pages": 1, "launched": "2026-10-11" }, { "slug": "skill-manifest-check", "name": "Skill Manifest Check", "url": "https://marisstella.app/skill-manifest-check/", "category": "CI checks & developer gates", "description": "Lint a SKILL.md for missing frontmatter, a description too vague to trigger, overlapping triggers and body size. Free, runs in your browser.", "pages": 3, "launched": "2026-09-24" }, { "slug": "skylight-install-bid-calculator", "name": "Skylight Install Bid Calculator", "url": "https://marisstella.app/skylight-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a skylight install from unit count, tubular versus fixed versus solar-venting, replace-existing versus new cut-in, asphalt versus tile/metal versus low-slope, and extras —…", "pages": 5, "launched": "2026-08-26" }, { "slug": "slo-burn-rate-alerts", "name": "SLO burn-rate alerts, generated", "url": "https://marisstella.app/slo-burn-rate-alerts/", "category": "CI checks & developer gates", "description": "Enter your SLO and get the error budget in minutes of downtime, multi-window multi-burn-rate alert thresholds, how fast each alert fires in an outage, and a Prometheus rules file…", "pages": 2, "launched": "2026-10-01" }, { "slug": "slopsquatting-check", "name": "Did an AI assistant just suggest a package that doesn't exist?", "url": "https://marisstella.app/slopsquatting-check/", "category": "CI checks & developer gates", "description": "Paste your package.json and this offline check flags any dependency name that looks like a one- or two-letter typo of a famous npm package -- the same shape as a hallucinated name…", "pages": 4, "launched": "2026-09-24" }, { "slug": "slot-keeper", "name": "Slot Keeper — a booking page you host yourself", "url": "https://marisstella.app/slot-keeper/", "category": "Self-hosted business apps", "description": "A booking page you host yourself: weekly hours, buffers, notice, your calendar's busy time respected, time zones, calendar invites, reminders and cancel or reschedule links. Open…", "pages": 1, "launched": "2026-10-16" }, { "slug": "small-batch-run-size-optimizer", "name": "Small-batch run size optimizer", "url": "https://marisstella.app/small-batch-run-size-optimizer/", "category": "Creator & solo earner income", "description": "Free batch size calculator for candle, soap, sauce, print and baked-goods makers: enter setup cost, holding cost and shelf life, and get the run size with the lowest yearly cost…", "pages": 1, "launched": "2026-10-09" }, { "slug": "small-business-acquisition-calculator", "name": "Can I afford to buy this business? DSCR and cash-to-close, free and private", "url": "https://marisstella.app/small-business-acquisition-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for buying a small business: enter the asking price, SDE and financing and see DSCR, cash needed at close, owner take-home, the highest price that still clears a…", "pages": 1, "launched": "2026-10-06" }, { "slug": "sms-segment-cost-calculator", "name": "Why does this text bill as 3 segments?", "url": "https://marisstella.app/sms-segment-cost-calculator/", "category": "CI checks & developer gates", "description": "Paste a text message to see whether it is GSM-7 or UCS-2, how many segments it bills as, what it costs per month at your volume, and which curly quote or emoji to swap to cut the…", "pages": 2, "launched": "2026-10-03" }, { "slug": "snow-plow-contract-calculator", "name": "Per push or seasonal? What each snow plow contract pays you in a low, normal and high snow year", "url": "https://marisstella.app/snow-plow-contract-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Compare per-push, seasonal flat, capped and hybrid snow plow contracts across low, normal and high snow years, with break-even storms and a walk-away price.", "pages": 2, "launched": "2026-10-03" }, { "slug": "snow-removal-bid-calculator", "name": "Snow Removal Bid Calculator", "url": "https://marisstella.app/snow-removal-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a snow-removal winter from route minutes, truck cost, salt, and expected storms. Compare per-push vs seasonal, see the ice-event drain, and the storm count where a cheap…", "pages": 4, "launched": "2026-08-26" }, { "slug": "snowflake-warehouse-cost-advisor", "name": "Why is your Snowflake bill so high?", "url": "https://marisstella.app/snowflake-warehouse-cost-advisor/", "category": "CI checks & developer gates", "description": "Paste your Snowflake warehouses (size, credits used, AUTO_SUSPEND, resumes) and get what each costs, the AUTO_SUSPEND tail you are paying for, idle warehouses and a bounded…", "pages": 2, "launched": "2026-10-02" }, { "slug": "soc2-readiness-checker", "name": "SOC 2 Readiness Checker — free, private, no signup", "url": "https://marisstella.app/soc2-readiness-checker/", "category": "CI checks & developer gates", "description": "Free SOC 2 readiness checker: answer the controls auditors test, get a readiness score, the gaps ranked by value per day of effort, and a rough timeline to a Type I date and a…", "pages": 1, "launched": "2026-10-10" }, { "slug": "social-preview-check", "name": "Social Preview Checker", "url": "https://marisstella.app/social-preview-check/", "category": "CI checks & developer gates", "description": "Free tool: run a CLI that sends real requests to your page and its og:image/twitter:image, then paste the JSON here for a plain-English report on missing tags, a relative og:image…", "pages": 5, "launched": "2026-09-10" }, { "slug": "social-security-benefits-tax-calculator", "name": "Is my Social Security taxable? Free calculator with the tax torpedo, private", "url": "https://marisstella.app/social-security-benefits-tax-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for how much of your Social Security is taxable: enter benefits and other income, see provisional income, the 0/50/85% taxable share, the tax, and the effective…", "pages": 1, "launched": "2026-10-06" }, { "slug": "social-security-claiming-age-calculator", "name": "Social Security Claiming Age Calculator — free, private, in your browser", "url": "https://marisstella.app/social-security-claiming-age-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the best age to claim Social Security, for one person or a couple. Compares claiming at 62 to 70, shows break-even ages, and models spousal and survivor…", "pages": 1, "launched": "2026-09-29" }, { "slug": "social-security-earnings-test-calculator", "name": "Social Security earnings test calculator: how much is withheld if you work? Free, private", "url": "https://marisstella.app/social-security-earnings-test-calculator/", "category": "Creator & solo earner income", "description": "Free Social Security earnings test calculator: if you claim before full retirement age and keep working, see how many months of benefits are withheld each year, the net dollars…", "pages": 1, "launched": "2026-10-06" }, { "slug": "social-security-survivor-spousal-benefit-calculator", "name": "Social Security survivor and spousal benefit calculator. Free, private", "url": "https://marisstella.app/social-security-survivor-spousal-benefit-calculator/", "category": "Back-office money & contracts", "description": "Free Social Security widow(er) and spousal benefit calculator: see the survivor benefit at every age from 60, whether to take survivor first and your own at 70, and a spousal…", "pages": 1, "launched": "2026-10-13" }, { "slug": "sod-install-bid-calculator", "name": "Sod Installation Bid Calculator", "url": "https://marisstella.app/sod-install-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a sod install from fescue, bermuda, or zoysia: lawn size, whole pallets, soil prep, delivery, slope, and watering — plus the walk-away price a $0.55-a-foot special cannot…", "pages": 4, "launched": "2026-08-26" }, { "slug": "soffit-fascia-bid-calculator", "name": "Soffit and Fascia Bid Calculator", "url": "https://marisstella.app/soffit-fascia-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price soffit and fascia from eave lineal feet, aluminum wrap versus vinyl replace versus wood replace, 1-story versus 2-story versus 3-story access, and extras — plus the…", "pages": 4, "launched": "2026-08-26" }, { "slug": "solar-land-lease-offer-calculator", "name": "Solar Land Lease Offer Calculator — free, private", "url": "https://marisstella.app/solar-land-lease-offer-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free solar lease calculator for landowners: present value of an option-plus-term solar lease against what your land earns now, the break-even rent and escalator, and rent as a…", "pages": 1, "launched": "2026-10-10" }, { "slug": "solar-panel-cleaning-quote-planner", "name": "How much to charge to clean solar panels, free calculator", "url": "https://marisstella.app/solar-panel-cleaning-quote-planner/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free solar panel cleaning quote calculator. Enter your rate, speed per panel and costs; get a price per job and per panel at your target margin, a day route pack, and a payback…", "pages": 1, "launched": "2026-10-07" }, { "slug": "solar-payback-calculator", "name": "Solar Payback Calculator — free, private, in your browser", "url": "https://marisstella.app/solar-payback-calculator/", "category": "Back-office money & contracts", "description": "Free solar panel payback calculator for homeowners. Enter system cost, incentives, production and your electricity rates to see payback year, 25-year net gain, NPV and IRR, and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "solar-pv-bid-calculator", "name": "Solar PV Install Bid Calculator", "url": "https://marisstella.app/solar-pv-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a rooftop solar install from module count, roof difficulty, panel upgrades, permits, and margin — then see dollars per watt, crew hours, and the walk-away number a cheaper…", "pages": 4, "launched": "2026-08-26" }, { "slug": "solo-401k-contribution-calculator", "name": "Solo 401(k) Contribution Calculator — free, 2026", "url": "https://marisstella.app/solo-401k-contribution-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the 2026 Solo 401(k) contribution limit for a sole proprietor or single-member LLC — employee elective deferral (up to $24,500, or $32,500/$35,750 with…", "pages": 2, "launched": "2026-09-28" }, { "slug": "source-map-leak-check", "name": "Source Map Leak Checker", "url": "https://marisstella.app/source-map-leak-check/", "category": "CI checks & developer gates", "description": "Free tool: paste your site's URL (or a list of JS file URLs), and it finds every script's sourceMappingURL comment, fetches the map, and names which ones are publicly readable and…", "pages": 3, "launched": "2026-09-23" }, { "slug": "speaker-fee-calculator", "name": "Speaker fee calculator", "url": "https://marisstella.app/speaker-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free speaker fee calculator: the keynote fee you need to hit an income goal after bureau commission and travel, plus a stacked quote with add-ons, virtual pricing and net per…", "pages": 1, "launched": "2026-10-08" }, { "slug": "speech-to-text-pricing-calculator", "name": "What will transcription cost for your audio hours, and who is cheapest?", "url": "https://marisstella.app/speech-to-text-pricing-calculator/", "category": "CI checks & developer gates", "description": "Type your monthly audio hours and growth, get every speech-to-text API priced side by side and the volume where self-hosting Whisper starts to win. No account, no upload.", "pages": 2, "launched": "2026-10-04" }, { "slug": "sponsor-ready", "name": "Sponsor Ready", "url": "https://marisstella.app/sponsor-ready/", "category": "Creator & solo earner income", "description": "Free, no-signup checklist that scores a public GitHub repo against the signals that correlate with attracting GitHub Sponsors, and tells you exactly what to fix first.", "pages": 3, "launched": "2026-08-27" }, { "slug": "sports-official-game-fee-calculator", "name": "Referee & Umpire Pay Calculator — free, private", "url": "https://marisstella.app/sports-official-game-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free pay calculator for referees, umpires and game officials: what you keep per game and per hour after the assignor fee, driving and taxes, how many games you need for a…", "pages": 1, "launched": "2026-10-10" }, { "slug": "spray-foam-bid-calculator", "name": "Spray Foam Bid Calculator", "url": "https://marisstella.app/spray-foam-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price residential spray foam from the board feet an attic-square-foot special cannot see, the rim, the cell, and the ignition coating — plus walk-away price and proposed-price…", "pages": 4, "launched": "2026-08-26" }, { "slug": "sql-migration-lock-check", "name": "Will this migration take your database down?", "url": "https://marisstella.app/sql-migration-lock-check/", "category": "CI checks & developer gates", "description": "Paste a PostgreSQL migration to find statements that lock the table: CREATE INDEX without CONCURRENTLY, SET NOT NULL, a missing lock_timeout. No database connection.", "pages": 4, "launched": "2026-09-16" }, { "slug": "square-catalog-csv-check", "name": "Square Catalog CSV Check — free, private, in your browser", "url": "https://marisstella.app/square-catalog-csv-check/", "category": "Marketplace seller tools", "description": "Free Square item library CSV checker: finds repeated or damaged Tokens, duplicate SKUs and variation names, bad prices, Y/N flags, wrong GTIN check digits, Excel-damaged SKUs and…", "pages": 1, "launched": "2026-10-04" }, { "slug": "square-sales-to-journal", "name": "Square sales to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/square-sales-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Square transactions to journal converter: checks every payment, books gross sales, discounts, sales tax, tips, refunds and Square fees separately by month, totals each…", "pages": 1, "launched": "2026-10-05" }, { "slug": "squarespace-product-csv-check", "name": "Squarespace Product CSV Check — free, private, in your browser", "url": "https://marisstella.app/squarespace-product-csv-check/", "category": "Marketplace seller tools", "description": "Free Squarespace product CSV checker: finds variant rows that start new products, duplicate SKUs and Product URLs, bad prices, On Sale without a Sale Price, wrong Yes/No flags…", "pages": 1, "launched": "2026-10-04" }, { "slug": "sri-check", "name": "Subresource Integrity (SRI) Checker & Hash Generator", "url": "https://marisstella.app/sri-check/", "category": "CI checks & developer gates", "description": "Free tool: generate a sha384 integrity= hash for any script or stylesheet, or run a CLI that checks a page's cross-origin tags for a missing integrity attribute, a missing…", "pages": 4, "launched": "2026-09-10" }, { "slug": "staffing-markup-calculator", "name": "Staffing Markup Calculator", "url": "https://marisstella.app/staffing-markup-calculator/", "category": "Service business pricing & quotes", "description": "Price a staffing placement properly: employer burden per hour, the real gross margin behind your markup, the break-even markup, and the markup a target margin needs. Free…", "pages": 4, "launched": "2026-09-10" }, { "slug": "stair-lift-bid-calculator", "name": "Stair Lift Bid Calculator", "url": "https://marisstella.app/stair-lift-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a stair lift from lift count, straight versus landing versus outdoor versus curved rail, perch versus standard versus power-swivel versus power-pack versus heavy-duty chair…", "pages": 6, "launched": "2026-08-25" }, { "slug": "standby-generator-bid-calculator", "name": "Standby Generator Installation Bid Calculator", "url": "https://marisstella.app/standby-generator-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a residential standby generator install from the nameplate feeder, transfer switch, pad, gas or propane line, and setback — plus walk-away price, dollars per kW, and how…", "pages": 4, "launched": "2026-08-26" }, { "slug": "standby-generator-install-price-calculator", "name": "Standby Generator Install Price Calculator — free, private", "url": "https://marisstella.app/standby-generator-install-price-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Free standby generator install price calculator: enter the equipment, gas and electrical runs, permit, crew hours and callback risk, and get a price, the cash you need before…", "pages": 1, "launched": "2026-10-11" }, { "slug": "startup-exit-waterfall-calculator", "name": "Startup Exit Waterfall Calculator — free, private, in your browser", "url": "https://marisstella.app/startup-exit-waterfall-calculator/", "category": "Back-office money & contracts", "description": "Free startup exit waterfall calculator. Enter the sale price and your cap table (common, options, preferred series with liquidation preference, participation caps, seniority and…", "pages": 1, "launched": "2026-09-30" }, { "slug": "startup-option-value-calculator", "name": "Startup Stock Option Value Calculator — free, private, in your browser", "url": "https://marisstella.app/startup-option-value-calculator/", "category": "Back-office money & contracts", "description": "Free startup stock option calculator. See what an offer's options are really worth after dilution, liquidation preferences, vesting cliff, exercise cost and tax, weighted by the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "state-residency-day-counter", "name": "State Residency Day Counter — free, private, in your browser", "url": "https://marisstella.app/state-residency-day-counter/", "category": "Back-office money & contracts", "description": "Free multi-state residency day counter. Enter where you spent the year, see days per state against the 183-day and other statutory residency tests, the room you have left, the…", "pages": 11, "launched": "2026-10-01" }, { "slug": "status-keeper", "name": "status-keeper — your own status page, free", "url": "https://marisstella.app/status-keeper/", "category": "Self-hosted business apps", "description": "A free, self-hosted status page with uptime monitoring, 90-day bars, incidents, maintenance windows and alerts. An open-source alternative to Statuspage, Instatus and Better…", "pages": 1, "launched": "2026-10-15" }, { "slug": "stocker-cattle-margin-calculator", "name": "Stocker Cattle Margin Calculator — free, private", "url": "https://marisstella.app/stocker-cattle-margin-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free stocker and backgrounding calculator: margin per head, break-even sale price and purchase price, cost of gain against value of gain with a price slide, death loss and…", "pages": 1, "launched": "2026-10-10" }, { "slug": "stockx-seller-payout-calculator", "name": "StockX Seller Payout Calculator", "url": "https://marisstella.app/stockx-seller-payout-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for StockX sneaker, streetwear, and card sellers: find real net payout and net profit after the seller fee (which drops by seller level), the Fast Shipping…", "pages": 5, "launched": "2026-09-17" }, { "slug": "storage-auction-max-bid-calculator", "name": "Storage Auction Max Bid Calculator — What the Cost Stack Actually Supports", "url": "https://marisstella.app/storage-auction-max-bid-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for storage-unit auction bidders: prices the buyer's premium, realistic resale recovery, resale fees, dump and labor cost, and holding cost, then reports the bid a…", "pages": 4, "launched": "2026-09-17" }, { "slug": "str-arbitrage-lease-calculator", "name": "Rental arbitrage calculator: will a sublet Airbnb earn back its furniture? Free, private", "url": "https://marisstella.app/str-arbitrage-lease-calculator/", "category": "Marketplace seller tools", "description": "Free rental arbitrage calculator: rent, utilities, furnishing, nightly rate, occupancy, commission and turnovers become monthly profit, break-even occupancy, the month furnishing…", "pages": 1, "launched": "2026-10-12" }, { "slug": "str-cleaning-fee-pricing-calculator", "name": "Short-Term Rental Cleaning Fee Calculator — free", "url": "https://marisstella.app/str-cleaning-fee-pricing-calculator/", "category": "Marketplace seller tools", "description": "Free cleaning fee calculator for Airbnb and VRBO hosts: the fee that covers your cleaner, host profit and guest total price by stay length, and whether to roll the fee into the…", "pages": 1, "launched": "2026-09-29" }, { "slug": "str-host-payout-calculator", "name": "Airbnb vs Vrbo host payout calculator", "url": "https://marisstella.app/str-host-payout-calculator/", "category": "Marketplace seller tools", "description": "Free short-term rental host payout calculator: compare Airbnb’s 15.5% 2026 host-only fee with Vrbo (5% + 3%) and direct booking. See annual take-home, the nightly raise that…", "pages": 7, "launched": "2026-08-26" }, { "slug": "str-nightly-rate-optimizer", "name": "STR Nightly Rate Optimizer — free, private, in your browser", "url": "https://marisstella.app/str-nightly-rate-optimizer/", "category": "Marketplace seller tools", "description": "Free nightly rate calculator for Airbnb and VRBO hosts. Paste your listed nightly prices and whether each night booked to see how your booking chance falls as price rises, and the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "str-occupancy-tax-calculator", "name": "STR Occupancy Tax Calculator", "url": "https://marisstella.app/str-occupancy-tax-calculator/", "category": "Marketplace seller tools", "description": "Split a short-term rental stay's occupancy tax into what Airbnb or Vrbo already collects and what is left for the host to remit directly, layer by layer -- state, county, city…", "pages": 4, "launched": "2026-09-24" }, { "slug": "str-tax-loophole-calculator", "name": "STR Tax Loophole Calculator — free, 2026", "url": "https://marisstella.app/str-tax-loophole-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for short-term rental owners: does your Airbnb or VRBO escape rental-activity status (average stay of 7 days or less) and qualify as non-passive through material…", "pages": 1, "launched": "2026-09-29" }, { "slug": "str-turnover-crew-planner", "name": "Which turnovers should a cleaning crew take today, and which crew?", "url": "https://marisstella.app/str-turnover-crew-planner/", "category": "Marketplace seller tools", "description": "Paste the day's vacation-rental turnovers and get the most profitable set of cleans, which of your one to three crews does each and in what order, with checkout and check-in…", "pages": 2, "launched": "2026-10-02" }, { "slug": "str-turnover-scheduler", "name": "Airbnb turnover cleaning schedule and crew size — free, private", "url": "https://marisstella.app/str-turnover-scheduler/", "category": "Marketplace seller tools", "description": "Free Airbnb and VRBO turnover cleaning scheduler: paste your iCal calendars and get a cleaner schedule, same-day turnover warnings, double-booking checks and the number of…", "pages": 1, "launched": "2026-10-07" }, { "slug": "stripe-churn-cohort-analyzer", "name": "Stripe Churn and Cohort Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/stripe-churn-cohort-analyzer/", "category": "Back-office money & contracts", "description": "Free Stripe churn and cohort analyzer: drop in your Stripe subscriptions CSV and get MRR, new vs churned MRR, monthly churn and a cohort retention table. Runs in your browser, the…", "pages": 2, "launched": "2026-09-29" }, { "slug": "stripe-failed-payment-recovery-analyzer", "name": "Stripe Failed Payment Recovery Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/stripe-failed-payment-recovery-analyzer/", "category": "Back-office money & contracts", "description": "Free Stripe failed payment recovery analyzer: drop in your Stripe payments CSV and see how much failed-payment revenue you recover, what you lose, by decline reason and how fast…", "pages": 1, "launched": "2026-09-29" }, { "slug": "stripe-payout-to-journal", "name": "Stripe payout report to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/stripe-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Stripe payout reconciliation to journal converter: proves the rows add up to the payout, splits gross sales, Stripe fees, refunds and disputes by month, and downloads a…", "pages": 1, "launched": "2026-10-05" }, { "slug": "structured-data-drift-check", "name": "Does your structured data match what's actually on the page?", "url": "https://marisstella.app/structured-data-drift-check/", "category": "CI checks & developer gates", "description": "Paste a page's HTML and see whether its JSON-LD (FAQPage, HowTo, Article, Product, LocalBusiness/Organization, Review) actually says, word for word, what the page's own visible…", "pages": 4, "launched": "2026-09-09" }, { "slug": "structured-settlement-buyout-calculator", "name": "What rate is the settlement buyer charging you? Free calculator", "url": "https://marisstella.app/structured-settlement-buyout-calculator/", "category": "Creator & solo earner income", "description": "Free structured settlement buyout calculator: type the payments you would sell and the cash offered, and see the yearly discount rate the buyer is charging, what the payments are…", "pages": 1, "launched": "2026-10-08" }, { "slug": "stucco-repair-bid-calculator", "name": "Stucco / EIFS Repair Bid Calculator", "url": "https://marisstella.app/stucco-repair-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price a stucco or EIFS repair from crack linear feet, hollow area, tear-off to the substrate, stories and scaffolding, window flashing, color match, and moisture investigation —…", "pages": 4, "launched": "2026-08-26" }, { "slug": "student-loan-rap-ibr-standard-calculator", "name": "Student loan RAP vs IBR vs Standard calculator", "url": "https://marisstella.app/student-loan-rap-ibr-standard-calculator/", "category": "Creator & solo earner income", "description": "Free student loan calculator: compare the new Repayment Assistance Plan (RAP), Income-Based Repayment (IBR) and the tiered Standard plan. Monthly payment, total paid, amount…", "pages": 1, "launched": "2026-10-08" }, { "slug": "studio-class-slot-optimizer", "name": "Studio Class Slot Optimizer — free, private, in your browser", "url": "https://marisstella.app/studio-class-slot-optimizer/", "category": "Creator & solo earner income", "description": "Free class timetable optimizer for fitness, yoga, pilates and dance studios. Paste your attendance log to see which slots lose money, your break-even class size, and which classes…", "pages": 1, "launched": "2026-09-30" }, { "slug": "stump-grinding-price-calculator", "name": "How much should I charge to grind a stump? Free bid calculator", "url": "https://marisstella.app/stump-grinding-price-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Free stump grinding price calculator. Stump diameters, wood hardness, grinder speed, crew, machine and drive time in; price per stump, minimum charge, per-inch quote check and…", "pages": 1, "launched": "2026-10-07" }, { "slug": "subcontractor-cashflow-planner", "name": "Subcontractor Cash Flow Planner", "url": "https://marisstella.app/subcontractor-cashflow-planner/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free subcontractor cash flow planner: see the funding gap from payment terms, retention and late payment — what bridging it costs, and which lever closes it.", "pages": 4, "launched": "2026-08-26" }, { "slug": "subdomain-takeover-check", "name": "Subdomain Takeover Checker", "url": "https://marisstella.app/subdomain-takeover-check/", "category": "CI checks & developer gates", "description": "Free tool: paste a hostname and it follows its real CNAME chain, then -- if the chain ends at a known takeover-prone provider (S3, Heroku, GitHub Pages, Azure, and 20 more) --…", "pages": 3, "launched": "2026-09-23" }, { "slug": "subpath-robots-check", "name": "Your GitHub Pages sitemap is probably never read", "url": "https://marisstella.app/subpath-robots-check/", "category": "CI checks & developer gates", "description": "A site published at a URL subpath — user.github.io/repo/, gitlab.io/project/, a CDN subdirectory — cannot govern its own robots.txt, so its sitemap is never auto-discovered and…", "pages": 3, "launched": "2026-09-17" }, { "slug": "subscription-audit-from-statement", "name": "Subscription Audit From Your Bank Statement — free, private, in your browser", "url": "https://marisstella.app/subscription-audit-from-statement/", "category": "Back-office money & contracts", "description": "Free tool: drop in your bank or card statement CSV and see every subscription and recurring charge with its monthly and yearly cost, price increases, double charges, upcoming…", "pages": 1, "launched": "2026-09-29" }, { "slug": "subscription-price-impact", "name": "SaaS Price Increase Churn Calculator", "url": "https://marisstella.app/subscription-price-impact/", "category": "Back-office money & contracts", "description": "Test a SaaS price increase and see the maximum churn your recurring revenue can absorb before the change stops paying off.", "pages": 3, "launched": "2026-08-26" }, { "slug": "subscription-proration-calculator", "name": "Subscription proration calculator: what is owed after a mid-cycle change? Free, private", "url": "https://marisstella.app/subscription-proration-calculator/", "category": "Service business pricing & quotes", "description": "Free proration calculator for SaaS and subscription businesses: enter the billing period, what was billed and the mid-cycle changes, and see each day-count segment, the credit or…", "pages": 1, "launched": "2026-10-12" }, { "slug": "substack-subscriber-export-analyzer", "name": "Substack Subscriber Export Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/substack-subscriber-export-analyzer/", "category": "Back-office money & contracts", "description": "Free analyzer for Substack writers: drop in your subscribers export CSV and see paid, free and former subscribers, free-to-paid conversion, paid retention, revenue by plan, annual…", "pages": 1, "launched": "2026-09-29" }, { "slug": "sump-pump-bid-calculator", "name": "Sump Pump Bid Calculator", "url": "https://marisstella.app/sump-pump-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a sump-pump install from pit type, extra discharge past the included first fifteen feet, battery or water-powered backup, alarm, and freeze protection — not a published $450…", "pages": 4, "launched": "2026-08-26" }, { "slug": "sunroom-bid-calculator", "name": "Sunroom Bid Calculator", "url": "https://marisstella.app/sunroom-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a residential sunroom or three-season room from the glazed-wall square feet a floor-square-foot special cannot see, the thermal floor, the insulated roof, and HVAC — plus…", "pages": 4, "launched": "2026-08-26" }, { "slug": "supabase-bill-estimator", "name": "What will your Supabase bill be, and what cuts it most?", "url": "https://marisstella.app/supabase-bill-estimator/", "category": "CI checks & developer gates", "description": "Estimate a monthly Supabase Pro bill from your own usage (compute, database disk, egress, storage, monthly active users, Edge Functions, Realtime) at editable list prices, and see…", "pages": 2, "launched": "2026-10-03" }, { "slug": "supabase-rls-check", "name": "Supabase RLS Exposure Checker", "url": "https://marisstella.app/supabase-rls-check/", "category": "CI checks & developer gates", "description": "Free, in-browser tool: paste your Supabase project URL and anon key, and it sends a real read-only request to every table it can see, naming which ones return real rows to an…", "pages": 4, "launched": "2026-09-23" }, { "slug": "supplier-price-creep-checker", "name": "Find the supplier price creep hiding in your invoices — free, private", "url": "https://marisstella.app/supplier-price-creep-checker/", "category": "Restaurant, bar & food truck pricing", "description": "Free supplier price creep checker for restaurants, cafes and shops: paste invoice lines, see which items crept up, which invoice was a one-off overcharge, what it costs a year…", "pages": 1, "launched": "2026-10-06" }, { "slug": "support-agent", "name": "Support Agent — AI customer service that knows when to hand off", "url": "https://marisstella.app/support-agent/", "category": "Self-hosted business apps", "description": "An open-source AI support agent you host yourself: it answers customers from your own help articles, cites them, offers articles when unsure and hands off to a person on refunds…", "pages": 2, "launched": "2026-10-21" }, { "slug": "support-desk", "name": "Support Desk — a help desk you host yourself", "url": "https://marisstella.app/support-desk/", "category": "Self-hosted business apps", "description": "A shared support inbox you host yourself: email and contact-form tickets, saved replies with suggestions, first-reply targets and a customer portal. Open source, MIT, no per-agent…", "pages": 1, "launched": "2026-10-15" }, { "slug": "support-staffing-planner", "name": "How many agents does your support queue need, and what is the cheapest schedule?", "url": "https://marisstella.app/support-staffing-planner/", "category": "Back-office money & contracts", "description": "Paste contacts per half hour and get the agents each interval needs (Erlang C, shrinkage, occupancy cap) and the cheapest shifts that cover them, plus what each service target…", "pages": 2, "launched": "2026-10-02" }, { "slug": "surety-bond-capacity-calculator", "name": "Surety bond premium and bonding capacity calculator", "url": "https://marisstella.app/surety-bond-capacity-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free bid bond and performance bond cost calculator for contractors: price the premium into your bid, check single-job and aggregate bonding capacity from working capital, see when…", "pages": 1, "launched": "2026-10-09" }, { "slug": "survey-keeper", "name": "Survey Keeper — an NPS survey that says why the score is what it is", "url": "https://marisstella.app/survey-keeper/", "category": "Self-hosted business apps", "description": "Run surveys and Net Promoter Score on a server you own: NPS with a 95% range, the words detractors use, results by source, CSV export and an alert on every detractor. Open source…", "pages": 1, "launched": "2026-10-17" }, { "slug": "swim-lesson-pool-rental-profit-calculator", "name": "Swim Lesson Profit Calculator — free, private", "url": "https://marisstella.app/swim-lesson-pool-rental-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free swim lesson calculator: enter private, semi-private and group lesson prices, class sizes, pool rental per hour, instructor pay and cancellations, and see profit per lesson…", "pages": 1, "launched": "2026-10-11" }, { "slug": "syndication-waterfall-calculator", "name": "Syndication Waterfall Calculator — free", "url": "https://marisstella.app/syndication-waterfall-calculator/", "category": "Back-office money & contracts", "description": "Free real estate syndication waterfall calculator: preferred return, IRR hurdles and sponsor promote tiers, with LP and GP IRR, equity multiples and a year-by-year split. Entirely…", "pages": 1, "launched": "2026-10-06" }, { "slug": "tailor-alterations-shop-profit-calculator", "name": "Tailor and Alterations Shop Profit Calculator — free, private", "url": "https://marisstella.app/tailor-alterations-shop-profit-calculator/", "category": "Marketplace seller tools", "description": "Free tailor and alterations shop calculator: enter hem, alteration and rework prices, bench minutes, supplies, tailor pay and rent, and see profit per job and per bench hour…", "pages": 1, "launched": "2026-10-11" }, { "slug": "tattoo-piece-profit-calculator", "name": "Tattoo Piece Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/tattoo-piece-profit-calculator/", "category": "Service business pricing & quotes", "description": "Tattoo piece profit calculator. Enter the hourly take-home you want, your shop commission or booth rent, setup time, supplies and free touch-ups to see the lowest price for each…", "pages": 1, "launched": "2026-10-01" }, { "slug": "tax-deed-auction-max-bid-planner", "name": "Tax Deed Auction Max Bid Planner — the most to bid and still hit your profit", "url": "https://marisstella.app/tax-deed-auction-max-bid-planner/", "category": "Marketplace seller tools", "description": "Free tax deed auction max bid calculator. Enter resale price, repairs, surviving liens, quiet title, occupant, holding and cash costs and your target profit; it shows the maximum…", "pages": 2, "launched": "2026-10-11" }, { "slug": "tax-lien-certificate-yield-calculator", "name": "What does a tax lien certificate really yield? Free calculator", "url": "https://marisstella.app/tax-lien-certificate-yield-calculator/", "category": "Creator & solo earner income", "description": "Free tax lien certificate calculator: enter your county's interest rule, fees, premium and subsequent taxes and see the return by redemption month, the annualized yield and the…", "pages": 1, "launched": "2026-10-08" }, { "slug": "tax-loss-harvesting-calculator", "name": "Tax-Loss Harvesting Calculator — free, private, in your browser", "url": "https://marisstella.app/tax-loss-harvesting-calculator/", "category": "Back-office money & contracts", "description": "Free tax-loss harvesting calculator. Enter your realized gains, carried-forward losses and the positions you could sell at a loss to see the tax saved this year, the $3,000…", "pages": 1, "launched": "2026-09-30" }, { "slug": "tax-lot-sale-optimizer", "name": "Which lots should you sell? Free tax lot optimizer", "url": "https://marisstella.app/tax-lot-sale-optimizer/", "category": "Creator & solo earner income", "description": "Free tax lot optimizer: paste your purchase lots, enter the cash you need, and get the exact shares to sell from each lot for the lowest capital-gains tax, compared with FIFO…", "pages": 1, "launched": "2026-10-08" }, { "slug": "tax-season-client-picker", "name": "Which late-season tax clients should a preparer accept?", "url": "https://marisstella.app/tax-season-client-picker/", "category": "Service business pricing & quotes", "description": "Paste the late-season client engagements you have been offered and get the set that earns the most before the filing and extension deadlines, the order to work them, and the fee…", "pages": 2, "launched": "2026-10-02" }, { "slug": "tcgplayer-fee-calculator", "name": "TCGplayer Fee Calculator", "url": "https://marisstella.app/tcgplayer-fee-calculator/", "category": "Marketplace seller tools", "description": "Free TCGplayer seller fee calculator: 10.75% marketplace commission (capped at $75 per product, charged on cards plus shipping) and 2.5% + $0.30 per-order transaction fee. See…", "pages": 3, "launched": "2026-10-18" }, { "slug": "teachable-payout-to-journal", "name": "Teachable transactions to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/teachable-payout-to-journal/", "category": "Compliance checks & evidence records", "description": "Turn a Teachable transactions export into month-split journal entries. Nothing leaves your device.", "pages": 1, "launched": "2026-10-06" }, { "slug": "teachers-pay-teachers-earnings-analyzer", "name": "Teachers Pay Teachers Earnings Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/teachers-pay-teachers-earnings-analyzer/", "category": "Marketplace seller tools", "description": "Free Teachers Pay Teachers (TPT) seller earnings and fee calculator for teacher-authors: drop in your sales CSV and see the service fee actually taken, take-home per order, net…", "pages": 1, "launched": "2026-10-04" }, { "slug": "tenant-security-deposit-deadline-checker", "name": "Is my landlord late returning my security deposit? Free deadline check and letter", "url": "https://marisstella.app/tenant-security-deposit-deadline-checker/", "category": "Service business pricing & quotes", "description": "Free tool for tenants: pick your state, enter your move-out date and deposit, and see when your landlord's deadline to return it ran out, what the statute says about late…", "pages": 1, "launched": "2026-10-15" }, { "slug": "tender-bid-readiness", "name": "Tender Bid Readiness Checker", "url": "https://marisstella.app/tender-bid-readiness/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Paste a public tender and get a fast bid-readiness checklist for deadlines, bonds, insurance, certifications, questions, and submission instructions. Runs privately in your…", "pages": 3, "launched": "2026-08-26" }, { "slug": "tender-radar", "name": "Tender Radar | Public tender shortlist tool", "url": "https://marisstella.app/tender-radar/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Filter a public tender CSV by trade, minimum value, and deadline. Free, private browser tool for small contractors. Nothing is uploaded.", "pages": 3, "launched": "2026-08-26" }, { "slug": "tent-rental-job-profit-calculator", "name": "Tent Rental Job Profit Calculator — true profit, margin and lowest quote per job", "url": "https://marisstella.app/tent-rental-job-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for tent and party rental companies: true profit, margin and the lowest quote that hits your target margin per job. Private, in your browser.", "pages": 2, "launched": "2026-10-12" }, { "slug": "terraform-plan-blast-radius-check", "name": "Which of these resources is your terraform apply about to destroy?", "url": "https://marisstella.app/terraform-plan-blast-radius-check/", "category": "CI checks & developer gates", "description": "Paste a Terraform plan JSON to see what an apply destroys or replaces, with a loud flag when a database, bucket or DNS record is hit. Runs in your browser.", "pages": 3, "launched": "2026-09-11" }, { "slug": "terraform-plan-cost-estimate", "name": "What will this terraform apply add to the monthly AWS bill?", "url": "https://marisstella.app/terraform-plan-cost-estimate/", "category": "CI checks & developer gates", "description": "Paste a Terraform plan (terraform show -json) and get an approximate monthly AWS cost delta before you apply: top cost drivers, an honest list of what it could not price, and a…", "pages": 2, "launched": "2026-10-03" }, { "slug": "terraform-plan-secret-exposure-check", "name": "Did your Terraform plan just print a secret in plaintext?", "url": "https://marisstella.app/terraform-plan-secret-exposure-check/", "category": "CI checks & developer gates", "description": "Check a Terraform structured plan for secret-shaped values the sensitive flag missed -- deterministic, no account, no upload, with a matching CLI you can run as a CI gate before…", "pages": 5, "launched": "2026-09-11" }, { "slug": "testimonial-keeper", "name": "Testimonial Keeper — collect testimonials and show a wall of love, self-hosted", "url": "https://marisstella.app/testimonial-keeper/", "category": "Self-hosted business apps", "description": "Collect customer testimonials with a link, approve the ones you want, and show them on your site with one script tag. Consent stored with every entry. Open source, MIT, one-click…", "pages": 1, "launched": "2026-10-15" }, { "slug": "tfsa-over-contribution-checker", "name": "TFSA over-contribution checker: room left and cost of an excess. Free, private", "url": "https://marisstella.app/tfsa-over-contribution-checker/", "category": "Back-office money & contracts", "description": "Free TFSA room and over-contribution checker for Canadians: work out your contribution room from 2009, see whether a planned deposit puts you over, and what the CRA's 1% per month…", "pages": 1, "launched": "2026-10-13" }, { "slug": "therapy-8-minute-rule-calculator", "name": "Therapy 8-minute rule calculator", "url": "https://marisstella.app/therapy-8-minute-rule-calculator/", "category": "Service business pricing & quotes", "description": "Free 8-minute rule calculator for physical and occupational therapy clinics: paste each visit's timed CPT minutes, get billable units under the CMS rule, which code gets each…", "pages": 1, "launched": "2026-10-09" }, { "slug": "thrift-haul-buy-picker", "name": "What should you buy to resell, and what's the most to pay for each?", "url": "https://marisstella.app/thrift-haul-buy-picker/", "category": "Marketplace seller tools", "description": "Paste what you found at a thrift store, estate sale or liquidation with your own resale estimates and get which items to buy, the most to pay for each, the sell chance each needs…", "pages": 2, "launched": "2026-10-02" }, { "slug": "thumbtack-lead-roi-calculator", "name": "Are your Thumbtack leads paying for themselves?", "url": "https://marisstella.app/thumbtack-lead-roi-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for home-service pros: what Thumbtack-style paid leads and your quoting time cost per job won, the close rate you need to break even, and the most you can pay for…", "pages": 2, "launched": "2026-10-03" }, { "slug": "ticket-resale-profit-calculator", "name": "What should you list your tickets for?", "url": "https://marisstella.app/ticket-resale-profit-calculator/", "category": "Marketplace seller tools", "description": "Find the list price that breaks even or hits your profit target after StubHub, SeatGeek, Vivid Seats or Ticketmaster seller fees, see whether a listing pays once you allow for the…", "pages": 2, "launched": "2026-10-02" }, { "slug": "tiktok-shop-fee-calculator", "name": "TikTok Shop Fee Calculator", "url": "https://marisstella.app/tiktok-shop-fee-calculator/", "category": "Marketplace seller tools", "description": "Free TikTok Shop profit calculator. See referral fees, creator commission, returns that keep the affiliate payout, and the announced 1 Oct 2026 8% + 1.5% schedule on the same SKU.", "pages": 7, "launched": "2026-08-26" }, { "slug": "tiktok-shop-settlement-analyzer", "name": "TikTok Shop Settlement Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/tiktok-shop-settlement-analyzer/", "category": "Marketplace seller tools", "description": "Free TikTok Shop fee calculator for sellers: drop in your sales CSV and see the service fee actually taken, take-home per order, net revenue per product, repeat buyers, refunds…", "pages": 1, "launched": "2026-09-29" }, { "slug": "tile-layout-optimizer", "name": "Tile Layout Optimizer — free, private, in your browser", "url": "https://marisstella.app/tile-layout-optimizer/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Free tile layout optimizer for tilers, flooring installers and DIYers. Enter the room, any cut-outs and tile sizes; it searches the grid start, tile direction and brick bond…", "pages": 2, "launched": "2026-10-09" }, { "slug": "tile-layout-planner", "name": "Tile Layout Planner — free, private, in your browser", "url": "https://marisstella.app/tile-layout-planner/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Free tile layout planner for installers and DIY. Enter a room, cut-outs and a tile; see the real layout, how many tiles to buy with offcut reuse, the cut list, and the starting…", "pages": 2, "launched": "2026-10-01" }, { "slug": "timber-sale-offer-checker", "name": "Timber Sale Offer Checker — free, private", "url": "https://marisstella.app/timber-sale-offer-checker/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free timber sale offer checker for landowners: enter your logs and a logger's offer, see board feet under Doyle, Scribner and International rules, the value at your own prices…", "pages": 1, "launched": "2026-10-10" }, { "slug": "time-off-request-planner", "name": "Time-Off Request Planner — free, private, in your browser", "url": "https://marisstella.app/time-off-request-planner/", "category": "Restaurant, bar & food truck pricing", "description": "Free vacation and PTO request planner for small teams. Paste your people with roles and the time-off requests you have, set the minimum on duty per role, and see which requests to…", "pages": 2, "launched": "2026-10-01" }, { "slug": "time-tracker", "name": "Time Tracker — free billable hours timer, no signup", "url": "https://marisstella.app/time-tracker/", "category": "Compliance checks & evidence records", "description": "Free time tracker for freelancers and contractors: start a timer or add hours by hand, set a rate per project, round up the way you bill, see unbilled money by client, and turn…", "pages": 1, "launched": "2026-10-07" }, { "slug": "tip-fica-credit-calculator", "name": "How much FICA tip credit are you leaving on the table? Free calculator", "url": "https://marisstella.app/tip-fica-credit-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free FICA tip credit calculator for restaurants, bars and salons: estimate your Form 8846 credit per employee from cash wage, hours and tips, see the after-tax value and what…", "pages": 1, "launched": "2026-10-08" }, { "slug": "tip-pool-compliance-calculator", "name": "Tip Pool Compliance Calculator", "url": "https://marisstella.app/tip-pool-compliance-calculator/", "category": "Back-office money & contracts", "description": "Check a mandatory tip pool against federal FLSA rules: managers and supervisors are never eligible, and back-of-house staff are eligible only if you take no tip credit. See the…", "pages": 3, "launched": "2026-09-24" }, { "slug": "tire-shop-ticket-margin-calculator", "name": "Tire Shop Ticket Margin Calculator — free, private, in your browser", "url": "https://marisstella.app/tire-shop-ticket-margin-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Tire shop ticket margin calculator for owners and managers. Enter tires, alignments, road hazard coverage and fees with price, parts cost, labor minutes and attach rate to see net…", "pages": 1, "launched": "2026-10-01" }, { "slug": "toilet-replacement-bid-calculator", "name": "Toilet Replacement Bid Calculator", "url": "https://marisstella.app/toilet-replacement-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a toilet replacement from toilet count, two-piece versus comfort-height versus one-piece versus bidet-combo, swap-only versus flange-repair, owner-supplied versus…", "pages": 6, "launched": "2026-08-25" }, { "slug": "tournament-pairing-manager", "name": "Tournament Pairing Manager — free, private, in your browser", "url": "https://marisstella.app/tournament-pairing-manager/", "category": "Marketplace seller tools", "description": "Free Swiss pairing generator and bracket maker. Paste your players, get round-by-round Swiss pairings with colour balance, Buchholz and Sonneborn-Berger tiebreaks, or a single or…", "pages": 2, "launched": "2026-10-11" }, { "slug": "tow-motor-club-call-calculator", "name": "Tow Motor Club Call Calculator — free, private, in your browser", "url": "https://marisstella.app/tow-motor-club-call-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free calculator for independent tow and roadside operators: is this Agero, Urgent.ly, Honk or AAA-contractor dispatch worth taking? Cost of the job, profit per truck-hour…", "pages": 1, "launched": "2026-09-29" }, { "slug": "tow-truck-rate-calculator", "name": "Tow truck rate calculator, free", "url": "https://marisstella.app/tow-truck-rate-calculator/", "category": "Logistics, freight & cloud cost", "description": "Price a tow job from your own costs: margin, break-even, ranked levers. Runs in your browser.", "pages": 1, "launched": "2026-10-03" }, { "slug": "trade-bid-studio", "name": "Trade Bid Studio", "url": "https://marisstella.app/trade-bid-studio/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free bid calculator for any trade: turn labor hours, materials, subs, overhead and a target margin into a price, your walk-away number, and what a competitor's lower quote…", "pages": 2, "launched": "2026-10-16" }, { "slug": "trade-show-roi-calculator", "name": "Is that trade show booth worth it?", "url": "https://marisstella.app/trade-show-roi-calculator/", "category": "Back-office money & contracts", "description": "Paste the trade shows and conferences you could exhibit at and get cost per lead, expected deals, ROI and break-even leads for each, plus the exact set of shows that earns the…", "pages": 2, "launched": "2026-10-02" }, { "slug": "training-gpu-pricing-calculator", "name": "What will your GPU workload cost on each GPU cloud, and when is it cheaper to buy the card?", "url": "https://marisstella.app/training-gpu-pricing-calculator/", "category": "CI checks & developer gates", "description": "Enter the GPU, the busy GPU-hours per month and how much of the time it is really busy, and see what RunPod, Lambda, Vast.ai, CoreWeave, AWS, Google Cloud and Modal charge, the…", "pages": 2, "launched": "2026-10-04" }, { "slug": "trampoline-park-profit-calculator", "name": "Trampoline Park Profit Calculator — monthly profit, payback and break-even fill", "url": "https://marisstella.app/trampoline-park-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for trampoline parks and family entertainment centers. Enter jumper capacity, sessions, fill, ticket price, birthday parties, memberships, staff, rent and the…", "pages": 2, "launched": "2026-10-12" }, { "slug": "translation-job-picker", "name": "Which translation jobs should a freelance translator accept?", "url": "https://marisstella.app/translation-job-picker/", "category": "Service business pricing & quotes", "description": "Paste the translation jobs you have been offered and get the set that earns the most before the due dates, the order to work them, and the fee each declined file would need. Free…", "pages": 2, "launched": "2026-10-02" }, { "slug": "translator-project-quote", "name": "Translator Project Quote Calculator", "url": "https://marisstella.app/translator-project-quote/", "category": "Service business pricing & quotes", "description": "Free private translator quote calculator. 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Paste when each SaaS trial started and when that user first paid to see on which day people convert, whether they wait for the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "trial-converter", "name": "Trial Converter — trial-to-paid conversion for Stripe, self-hosted", "url": "https://marisstella.app/trial-converter/", "category": "Self-hosted business apps", "description": "Turn more Stripe free trials into paying customers: card-on-file trials get an honest price-and-date heads-up, card-less trials get escalating add-a-card emails and an optional…", "pages": 1, "launched": "2026-10-15" }, { "slug": "truck-detention-pay-calculator", "name": "Truck Detention Pay Calculator — free", "url": "https://marisstella.app/truck-detention-pay-calculator/", "category": "Logistics, freight & cloud cost", "description": "Free calculator for truck drivers and owner-operators: enter arrival and departure times, free time and the detention rate from your rate confirmation, and get the billable…", "pages": 1, "launched": "2026-10-05" }, { "slug": "trump-account-calculator", "name": "Trump Account Calculator — free growth and withdrawal estimator", "url": "https://marisstella.app/trump-account-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the federal Trump Account child savings account (One Big Beautiful Bill Act, 26 U.S.C. 530A): projects the $1,000 federal seed deposit plus family and employer…", "pages": 3, "launched": "2026-09-24" }, { "slug": "tuckpointing-bid-calculator", "name": "Tuckpointing Bid Calculator", "url": "https://marisstella.app/tuckpointing-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Roofing, siding & gutters", "description": "Price tuckpointing from wall area, grind versus smear, scaffold versus swing stage, and extras — plus the walk-away price an $8 / sq ft special cannot see.", "pages": 4, "launched": "2026-08-26" }, { "slug": "turo-earnings-report-analyzer", "name": "Turo Earnings Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/turo-earnings-report-analyzer/", "category": "Back-office money & contracts", "description": "Free analyzer for Turo hosts: drop in your earnings or trip history CSV and see profit per car and per trip after Turo's fee, cleaning, fuel, delivery and monthly loan, insurance…", "pages": 1, "launched": "2026-09-29" }, { "slug": "turo-host-payout-calculator", "name": "Turo Host Payout Calculator — free, no sign-up", "url": "https://marisstella.app/turo-host-payout-calculator/", "category": "Marketplace seller tools", "description": "Free Turo host payout calculator. 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Free, private", "url": "https://marisstella.app/tutor-effective-hourly-rate-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for private tutors: sessions, rate, prep, travel, cancellations, platform fees and admin time become your real hourly pay, yearly net, and the session rate that…", "pages": 1, "launched": "2026-10-06" }, { "slug": "tutor-package-pricing-calculator", "name": "Tutor Package Pricing Calculator — package vs. pay-per-session, free", "url": "https://marisstella.app/tutor-package-pricing-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for independent tutors and coaches: compares a discounted prepaid session package against pay-per-session pricing on effective hourly pay, not just revenue — the…", "pages": 3, "launched": "2026-09-17" }, { "slug": "tutor-weekly-schedule-optimizer", "name": "Tutor weekly schedule optimizer", "url": "https://marisstella.app/tutor-weekly-schedule-optimizer/", "category": "Creator & solo earner income", "description": "Free lesson scheduler for private tutors, music teachers and coaches: enter each student's fee and the times they can come, and get the weekly timetable that earns the most, with…", "pages": 1, "launched": "2026-10-09" }, { "slug": "tutoring-group-schedule-optimizer", "name": "Tutoring Group Schedule Optimizer — free, private, in your browser", "url": "https://marisstella.app/tutoring-group-schedule-optimizer/", "category": "Creator & solo earner income", "description": "Free group schedule optimizer for tutoring centres, music, swim and language schools. 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Runs…", "pages": 1, "launched": "2026-10-14" }, { "slug": "upholstery-shop-job-profit-calculator", "name": "Upholstery Shop Job Profit Calculator — free, private", "url": "https://marisstella.app/upholstery-shop-job-profit-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free upholstery shop calculator: enter your chair seat, armchair and sofa prices, bench hours, fabric and foam cost, upholsterer pay and rent, and see profit per job and per bench…", "pages": 1, "launched": "2026-10-11" }, { "slug": "upstash-redis-bill-estimator", "name": "What will your Upstash Redis bill be, and should you go fixed?", "url": "https://marisstella.app/upstash-redis-bill-estimator/", "category": "CI checks & developer gates", "description": "Estimate a monthly Upstash Redis bill from your own usage (million commands, storage GB, bandwidth GB) at editable list prices, see where pay-as-you-go crosses over to a fixed…", "pages": 2, "launched": "2026-10-03" }, { "slug": "uptime-monitoring-pricing-calculator", "name": "What will uptime monitoring cost for your monitors and check interval, and who is cheapest?", "url": "https://marisstella.app/uptime-monitoring-pricing-calculator/", "category": "CI checks & developer gates", "description": "Type your monitor count, check interval and growth, get every uptime-monitoring plan priced side by side and the monitor count where the cheapest one changes. No account, no…", "pages": 2, "launched": "2026-10-04" }, { "slug": "upwork-connects-roi-calculator", "name": "Are your Upwork Connects paying for themselves?", "url": "https://marisstella.app/upwork-connects-roi-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for freelancers: what your Connects and proposal-writing time cost per hire, the win rate you need to break even, and the most Connects a proposal can spend before…", "pages": 2, "launched": "2026-10-03" }, { "slug": "upwork-earnings-fee-analyzer", "name": "Upwork Earnings and Fee Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/upwork-earnings-fee-analyzer/", "category": "Creator & solo earner income", "description": "Free analyzer for freelancers: drop in your Upwork transaction history CSV and see the service fee you actually paid, Connects, membership and withdrawal costs, what you keep by…", "pages": 1, "launched": "2026-09-29" }, { "slug": "upwork-earnings-to-journal", "name": "Upwork earnings to Xero / QuickBooks journal — free, private", "url": "https://marisstella.app/upwork-earnings-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Upwork to QuickBooks and Xero journal converter: books hourly, fixed-price and bonus earnings gross, Upwork service fees and Connects as expenses, checks the running balance…", "pages": 1, "launched": "2026-10-06" }, { "slug": "us-freelancer-tax-set-aside-calculator", "name": "US Freelancer Tax Set-Aside Calculator 2026. 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The 183-day weighted count", "url": "https://marisstella.app/us-substantial-presence-test-calculator/", "category": "Back-office money & contracts", "description": "Free calculator for the IRS substantial presence test: enter your days in the US and see the 183-day weighted count (this year + a third of last year + a sixth of the year…", "pages": 2, "launched": "2026-10-19" }, { "slug": "usage-based-pricing-simulator", "name": "Usage-Based Pricing Simulator — free, private, in your browser", "url": "https://marisstella.app/usage-based-pricing-simulator/", "category": "Back-office money & contracts", "description": "Free usage-based pricing simulator. 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Runs entirely…", "pages": 4, "launched": "2026-08-26" }, { "slug": "vendor-change-watch", "name": "See exactly what changed in a vendor's terms", "url": "https://marisstella.app/vendor-change-watch/", "category": "Compliance checks & evidence records", "description": "Paste a vendor's terms, privacy policy, or subprocessor page. Come back later, paste it again, and get a section-by-section diff of what changed. Runs in your browser; nothing is…", "pages": 4, "launched": "2026-08-29" }, { "slug": "vendor-contract-clause-reader", "name": "Find the cancel-by date and bad clauses in a SaaS contract. 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Open source, free, runs from a cron job on your…", "pages": 1, "launched": "2026-10-14" }, { "slug": "vercel-bill-estimator", "name": "What will your Vercel bill be, and what cuts it most?", "url": "https://marisstella.app/vercel-bill-estimator/", "category": "CI checks & developer gates", "description": "Estimate a monthly Vercel Pro bill from your own usage (bandwidth, edge requests, functions, images, builds, seats) at editable list prices, and see which changes cut it most…", "pages": 2, "launched": "2026-10-03" }, { "slug": "veterinarian-associate-pay-calculator", "name": "Veterinarian Associate Pay Calculator — free, private, in your browser", "url": "https://marisstella.app/veterinarian-associate-pay-calculator/", "category": "Back-office money & contracts", "description": "Free veterinarian associate pay calculator. 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Monthly fee for your target margin, margin if members use more than planned, patient savings and yearly…", "pages": 1, "launched": "2026-10-09" }, { "slug": "video-hosting-pricing-calculator", "name": "What will video hosting cost for your minutes stored and watched, and who is cheapest?", "url": "https://marisstella.app/video-hosting-pricing-calculator/", "category": "CI checks & developer gates", "description": "Type your minutes stored, minutes watched per month and growth rate, get every video-hosting platform priced side by side and the viewing level where the cheapest one changes. No…", "pages": 2, "launched": "2026-10-04" }, { "slug": "vineyard-grape-vs-wine-calculator", "name": "Sell Grapes or Make Wine Calculator — free, private", "url": "https://marisstella.app/vineyard-grape-vs-wine-calculator/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Free vineyard calculator: compare selling grapes by the ton with making and selling your own wine. Net profit, cost per bottle, and the direct-sales share where bottling wins…", "pages": 1, "launched": "2026-10-10" }, { "slug": "vinyl-liner-bid-calculator", "name": "Vinyl Liner Bid Calculator", "url": "https://marisstella.app/vinyl-liner-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Landscape, deck & pool", "description": "Price a residential vinyl pool liner from the liner square feet a water-surface special cannot see, the hopper, the stairs, and the track — plus walk-away price and proposed-price…", "pages": 4, "launched": "2026-08-26" }, { "slug": "visit-keeper", "name": "visit-keeper — web analytics you own, free", "url": "https://marisstella.app/visit-keeper/", "category": "Self-hosted business apps", "description": "Free, self-hosted, cookie-free web analytics: visitors, sources, UTM campaigns and goals with revenue by source. An open-source alternative to Plausible, Fathom and Simple…", "pages": 1, "launched": "2026-10-15" }, { "slug": "voiceover-project-rate-calculator", "name": "Voice-Over Project Rate Calculator — free, no sign-up", "url": "https://marisstella.app/voiceover-project-rate-calculator/", "category": "Creator & solo earner income", "description": "Free voice-over rate calculator for freelance VO artists. Price a commercial, e-learning, IVR, or explainer script per word or per finished minute, scaled by usage/licensing term…", "pages": 4, "launched": "2026-09-23" }, { "slug": "volunteer-shift-scheduler", "name": "Volunteer Shift Scheduler — free, private, no sign-up", "url": "https://marisstella.app/volunteer-shift-scheduler/", "category": "Service business pricing & quotes", "description": "Free volunteer shift scheduler for churches, PTAs, food banks and youth sports. Paste your volunteers with the days they can do and their maximum shifts, list the shifts, and get…", "pages": 2, "launched": "2026-10-08" }, { "slug": "vpat-acr-generator", "name": "Free VPAT / Accessibility Conformance Report Generator", "url": "https://marisstella.app/vpat-acr-generator/", "category": "Compliance checks & evidence records", "description": "Fill in your own WCAG 2.1 A/AA conformance answers and get a correctly formatted VPAT 2.5 / Accessibility Conformance Report (ACR) for a federal or enterprise procurement RFP --…", "pages": 4, "launched": "2026-09-11" }, { "slug": "vscode-extension-drift-check", "name": "Did an extension you already trust just change what it does?", "url": "https://marisstella.app/vscode-extension-drift-check/", "category": "CI checks & developer gates", "description": "Paste a snapshot of your installed VS Code, Cursor, Windsurf, or VSCodium extensions and see exactly which ones changed their activation surface -- a new startup trigger, a new…", "pages": 4, "launched": "2026-09-07" }, { "slug": "vsme-report-builder", "name": "VSME Report Builder — Free Sustainability Report for Small Suppliers (Basic Module)", "url": "https://marisstella.app/vsme-report-builder/", "category": "More free tools", "description": "Free VSME Basic Module report builder for small EU suppliers asked for ESG data by customers or banks: fill in energy, emissions, workforce and safety figures, get a draft report…", "pages": 1, "launched": "2026-10-26" }, { "slug": "w2-efw2-file-validator", "name": "W-2 EFW2 File Validator — free, private, in your browser", "url": "https://marisstella.app/w2-efw2-file-validator/", "category": "Back-office money & contracts", "description": "Free EFW2 checker for W-2 electronic wage files: finds records that are not 512 characters, invalid SSNs, RT totals that no longer match the wage lines, wrong RF counts and Social…", "pages": 1, "launched": "2026-10-04" }, { "slug": "wage-garnishment-limit-calculator", "name": "Wage Garnishment Limit Calculator — free, private, in your browser", "url": "https://marisstella.app/wage-garnishment-limit-calculator/", "category": "Back-office money & contracts", "description": "Free tool: enter your pay stub and see the most that can be garnished from your paycheck under federal law for a debt judgment, a defaulted student loan or child support, how much…", "pages": 1, "launched": "2026-09-29" }, { "slug": "waitlist-keeper", "name": "Waitlist Keeper — a self-hosted referral waitlist", "url": "https://marisstella.app/waitlist-keeper/", "category": "Self-hosted business apps", "description": "A free, open-source alternative to Viral Loops and Prefinery: a launch waitlist where confirmed referrals move people up the line, with fraud guards and batch invites. Clean a…", "pages": 1, "launched": "2026-10-15" }, { "slug": "walk-in-shower-bid-calculator", "name": "Walk-In Shower Bid Calculator", "url": "https://marisstella.app/walk-in-shower-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a tiled walk-in shower from tile, waterproofing, linear drain, curbless slope, glass — and whether Saturday still pays after overtime. See the walk-away number before you…", "pages": 7, "launched": "2026-08-26" }, { "slug": "walk-in-tub-bid-calculator", "name": "Walk-In Tub Bid Calculator", "url": "https://marisstella.app/walk-in-tub-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Bid a walk-in tub the way the trade does — alcove, unit, extras, who bought the tub, and whether Saturday still pays — not a published installed dump — and see the margin before…", "pages": 6, "launched": "2026-08-25" }, { "slug": "wall-framing-takeoff", "name": "Wall Framing Takeoff — free, private, in your browser", "url": "https://marisstella.app/wall-framing-takeoff/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Free wall framing calculator for builders and framers. Enter walls, doors and windows; get the stud layout 16 or 24 on center, kings, jacks, headers and cripples, a cut list…", "pages": 7, "launched": "2026-10-21" }, { "slug": "walmart-marketplace-calculator", "name": "Walmart Marketplace WFS vs Seller-Fulfilled Calculator", "url": "https://marisstella.app/walmart-marketplace-calculator/", "category": "Marketplace seller tools", "description": "Free Walmart Marketplace calculator: compare WFS vs seller-fulfilled profit, apply the referral-fee floor, and see whether matching a lower price still leaves money after Buy Box…", "pages": 10, "launched": "2026-08-26" }, { "slug": "warehouse-slotting-optimizer", "name": "Warehouse slotting optimizer", "url": "https://marisstella.app/warehouse-slotting-optimizer/", "category": "Logistics, freight & cloud cost", "description": "Free warehouse slotting tool for small warehouses, 3PLs and online sellers: enter your shelf grid, each SKU's picks and size, and optionally real orders. Get where every SKU…", "pages": 1, "launched": "2026-10-09" }, { "slug": "wash-and-fold-price-calculator", "name": "Wash and Fold Price Per Pound Calculator — cost, break-even & margin", "url": "https://marisstella.app/wash-and-fold-price-calculator/", "category": "Service business pricing & quotes", "description": "Free wash and fold pricing calculator for laundromats and laundry pickup-and-delivery routes: work out your real cost per pound from labour minutes, wash and dry cycles, supplies…", "pages": 4, "launched": "2026-09-10" }, { "slug": "wash-sale-checker", "name": "Wash sale checker across all your accounts — free, private", "url": "https://marisstella.app/wash-sale-checker/", "category": "Back-office money & contracts", "description": "Free wash sale checker: paste your trades and see which losses are disallowed, the loss you can still claim, the adjusted basis of replacement shares, and wash sales across…", "pages": 1, "launched": "2026-10-06" }, { "slug": "water-damage-drying-estimate-calculator", "name": "Water Damage Drying Estimate Calculator — free, private", "url": "https://marisstella.app/water-damage-drying-estimate-calculator/", "category": "Service business pricing & quotes", "description": "Free water damage drying estimate calculator: enter the wet area and water class, get air movers and dehumidifiers, the equipment-day bill, job margin and what an extra drying day…", "pages": 1, "launched": "2026-10-11" }, { "slug": "water-heater-bid-calculator", "name": "Water Heater Replacement Bid Calculator", "url": "https://marisstella.app/water-heater-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a residential water heater replacement from the tank or tankless type, the location, the vent, and the gas or electrical path — plus walk-away price, dollars per gallon, and…", "pages": 4, "launched": "2026-08-26" }, { "slug": "water-softener-bid-calculator", "name": "Water Softener Bid Calculator", "url": "https://marisstella.app/water-softener-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a water-softener install from extra pipe past the included run, copper versus PEX, an iron filter or under-sink RO, the brine drain, haul-away of the old unit, and a brine…", "pages": 4, "launched": "2026-08-26" }, { "slug": "water-well-drilling-bid-calculator", "name": "Water well drilling bid calculator", "url": "https://marisstella.app/water-well-drilling-bid-calculator/", "category": "Service business pricing & quotes", "description": "Free water well drilling bid calculator: depth by formation, casing, grout, pump and tank, trench, mobilization and rig hours, plus a dry-hole allowance, priced to your margin…", "pages": 1, "launched": "2026-10-09" }, { "slug": "waterfront-rental-season-planner", "name": "How many bad-weather days can my kayak or boat rental survive? Free season planner", "url": "https://marisstella.app/waterfront-rental-season-planner/", "category": "Service business pricing & quotes", "description": "Free kayak, paddleboard and boat rental business calculator: fleet, rental length, price, weekday and weekend demand, staff and weather days in; season profit, rainy-day…", "pages": 1, "launched": "2026-10-08" }, { "slug": "webhook-relay", "name": "webhook-relay — keep webhooks safe while your app is down", "url": "https://marisstella.app/webhook-relay/", "category": "Self-hosted business apps", "description": "Never lose a Stripe, GitHub or Shopify webhook because your app was down. Self-hosted relay that verifies signatures, saves events before answering, retries with backoff and…", "pages": 1, "launched": "2026-10-15" }, { "slug": "webhook-signature-debugger", "name": "Why is my webhook signature failing?", "url": "https://marisstella.app/webhook-signature-debugger/", "category": "CI checks & developer gates", "description": "Webhook signature verification failed? Paste the headers, raw body and secret to verify the HMAC for Stripe, GitHub, Shopify, Slack and Svix, and see exactly why it does not…", "pages": 2, "launched": "2026-10-03" }, { "slug": "wedding-budget-allocator", "name": "Wedding budget calculator by guest count, free", "url": "https://marisstella.app/wedding-budget-allocator/", "category": "Service business pricing & quotes", "description": "Free wedding budget calculator: split your total budget across venue, food, photography and more using guest count, region and season, with your top priorities protected and a…", "pages": 1, "launched": "2026-10-03" }, { "slug": "wedding-day-timeline-builder", "name": "Wedding Day Timeline Builder — free, private, in your browser", "url": "https://marisstella.app/wedding-day-timeline-builder/", "category": "Restaurant, bar & food truck pricing", "description": "Free wedding day timeline builder. Enter your date, city, ceremony time and guest count and get a minute-by-minute schedule: hair and makeup, first look, portraits, ceremony…", "pages": 2, "launched": "2026-10-11" }, { "slug": "wedding-florist-proposal-calculator", "name": "Wedding Florist Proposal Calculator — Bunch Rounding, Labour & Margin", "url": "https://marisstella.app/wedding-florist-proposal-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for wedding and event florists: price a proposal from the recipe up, buying whole bunches instead of loose stems, add a shrink allowance before the rounding, price…", "pages": 3, "launched": "2026-09-16" }, { "slug": "wedding-flower-order-optimizer", "name": "Wedding flower order optimizer", "url": "https://marisstella.app/wedding-flower-order-optimizer/", "category": "Service business pricing & quotes", "description": "Free wedding and event florist tool: enter the stems each flower needs and the wholesale pack sizes and prices, and get the cheapest order that covers every stem plus a damage…", "pages": 1, "launched": "2026-10-09" }, { "slug": "wedding-officiant-fee-calculator", "name": "Wedding officiant fee calculator: what do you really earn per hour? Free, private", "url": "https://marisstella.app/wedding-officiant-fee-calculator/", "category": "Service business pricing & quotes", "description": "Free wedding officiant fee calculator: your fee, ceremonies a year, consultation, script writing, rehearsal, driving and yearly costs become real hourly pay, yearly net…", "pages": 1, "launched": "2026-10-07" }, { "slug": "wedding-photographer-profit-calculator", "name": "Wedding Photographer Profit Calculator — free, private, in your browser", "url": "https://marisstella.app/wedding-photographer-profit-calculator/", "category": "Service business pricing & quotes", "description": "Wedding and event photographer profit calculator. Enter packages, coverage hours, editing time and job costs to see profit per hour actually worked, the price that hits your…", "pages": 1, "launched": "2026-10-01" }, { "slug": "wedding-venue-date-pricing-optimizer", "name": "Wedding venue date pricing optimizer", "url": "https://marisstella.app/wedding-venue-date-pricing-optimizer/", "category": "Service business pricing & quotes", "description": "Free wedding venue pricing optimizer: enter dates, current prices, bookings, turned-away enquiries and price sensitivity per date type to find the price that earns the most, and…", "pages": 1, "launched": "2026-10-09" }, { "slug": "wedding-videographer-profit-calculator", "name": "Wedding Videographer Profit Calculator — free", "url": "https://marisstella.app/wedding-videographer-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free calculator for wedding and event videographers: package price, shoot, edit and revision hours, second shooter, travel, gear and fees become your true hourly rate, profit per…", "pages": 1, "launched": "2026-10-05" }, { "slug": "weekly-staff-schedule-maker", "name": "Weekly Staff Schedule Maker — free, private, in your browser", "url": "https://marisstella.app/weekly-staff-schedule-maker/", "category": "Restaurant, bar & food truck pricing", "description": "Free weekly staff schedule maker. List your people, roles, hour limits and days off plus the shifts to cover, and get a fair schedule that respects rest between shifts, with open…", "pages": 2, "launched": "2026-10-12" }, { "slug": "well-pump-bid-calculator", "name": "Well Pump Bid Calculator", "url": "https://marisstella.app/well-pump-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "HVAC, plumbing & electrical", "description": "Price a well-pump replacement from extra drop-pipe footage past the included run, seized versus free pitless, stuck-pump pull, extra well cable, a new pressure tank, and a…", "pages": 4, "launched": "2026-08-26" }, { "slug": "whatnot-sales-report-analyzer", "name": "Whatnot Sales Report Analyzer — free, private, CSV in your browser", "url": "https://marisstella.app/whatnot-sales-report-analyzer/", "category": "Marketplace seller tools", "description": "Free analyzer for Whatnot sellers: load your orders CSV and see profit per sale, show and category after Whatnot commission and payment processing, with effective fee rate, cost…", "pages": 1, "launched": "2026-09-29" }, { "slug": "whatnot-seller-payout", "name": "Whatnot Seller Payout Calculator", "url": "https://marisstella.app/whatnot-seller-payout/", "category": "Marketplace seller tools", "description": "Free Whatnot seller fee calculator. Commission on the hammer, processing on the checkout total (item + shipping + tax) plus $0.30, the $1,500 TCG cap, leftover after the label…", "pages": 7, "launched": "2026-09-07" }, { "slug": "wheelchair-ramp-bid-calculator", "name": "Wheelchair Ramp Bid Calculator — ADA Slope & Landings", "url": "https://marisstella.app/wheelchair-ramp-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Interior finishes & remodels", "description": "Price a residential ADA-slope wheelchair ramp from the rise, the landings a lineal-foot special cannot see, both-side handrails, surface, demo, and permit — plus walk-away price…", "pages": 4, "launched": "2026-08-26" }, { "slug": "where-to-sell-calculator", "name": "Where to Sell Calculator — compare marketplace fees on one item", "url": "https://marisstella.app/where-to-sell-calculator/", "category": "Marketplace seller tools", "description": "Free marketplace fee comparison: enter one item and see net profit after fees and returns on eBay, Etsy, Amazon, Mercari, Reverb and a dozen more.", "pages": 10, "launched": "2026-08-24" }, { "slug": "which-job-first", "name": "Which Job First? — rank your job list by picking one at a time", "url": "https://marisstella.app/which-job-first/", "category": "Trade & contractor bids", "subcategory": "Getting paid & job margin", "description": "Paste your job list, answer a handful of this-or-that questions, and get a ranked work order. Free, private, runs entirely in your browser with no account.", "pages": 4, "launched": "2026-09-03" }, { "slug": "wholesale-line-sheet-maker", "name": "Wholesale Line Sheet Maker — free, no signup", "url": "https://marisstella.app/wholesale-line-sheet-maker/", "category": "Marketplace seller tools", "description": "Free wholesale line sheet maker for makers and small brands: set wholesale prices from MSRP or cost, check your margin and the retailer's margin, simulate boutique orders with…", "pages": 1, "launched": "2026-10-07" }, { "slug": "wholesale-real-estate-offer-calculator", "name": "Wholesale real estate offer calculator", "url": "https://marisstella.app/wholesale-real-estate-offer-calculator/", "category": "Creator & solo earner income", "description": "Free calculator for real estate wholesalers: the most you can offer the seller, the end buyer's ceiling by the 70% rule and by profit, your fee by assignment versus double close…", "pages": 1, "launched": "2026-10-09" }, { "slug": "wholesale-vs-retail-pricing-calculator", "name": "Wholesale vs Retail Pricing Calculator — free, private", "url": "https://marisstella.app/wholesale-vs-retail-pricing-calculator/", "category": "Marketplace seller tools", "description": "Free calculator for makers and small brands: what you keep per unit and per order selling direct, wholesale or on consignment, after fees, shipping, your time and payment terms…", "pages": 1, "launched": "2026-10-10" }, { "slug": "wildlife-exclusion-bid-calculator", "name": "Wildlife Exclusion Bid Calculator", "url": "https://marisstella.app/wildlife-exclusion-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a bat, raccoon, squirrel or bird exclusion job from the visits it really takes — daily trap checks, the height the seal is at, attic decontamination, and a reserve against…", "pages": 4, "launched": "2026-09-10" }, { "slug": "window-cleaning-bid-calculator", "name": "Window Cleaning Bid Calculator", "url": "https://marisstella.app/window-cleaning-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Price a window cleaning job from panes, minutes per pane, stories, and travel time — then see the per-visit price, price per pane, effective hourly rate, and the walk-away number.", "pages": 4, "launched": "2026-08-26" }, { "slug": "window-replacement-bid-calculator", "name": "Window Replacement Bid Calculator", "url": "https://marisstella.app/window-replacement-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Windows, doors & garage", "description": "Price a window replacement job from United Inches, story, and tear-out — not a flat price per window. See walk-away price, average per opening, and the margin a $550-a-window…", "pages": 4, "launched": "2026-08-26" }, { "slug": "window-tinting-bid-calculator", "name": "Window Tinting Bid Calculator", "url": "https://marisstella.app/window-tinting-bid-calculator/", "category": "Trade & contractor bids", "subcategory": "Cleaning, restoration & insulation", "description": "Free bid calculator for independent auto window tinting installers: price a vehicle film job by which windows are being tinted, film tier, waste factor, and old-tint removal —…", "pages": 3, "launched": "2026-09-24" }, { "slug": "winery-excise-tax-calculator", "name": "Winery Excise Tax Calculator — free, private", "url": "https://marisstella.app/winery-excise-tax-calculator/", "category": "Restaurant, bar & food truck pricing", "description": "Free federal wine and hard cider excise tax calculator for wineries and cideries: enter cases, bottles and bulk gallons, see wine gallons, the $1.07 rate, the CBMA credit tiers…", "pages": 1, "launched": "2026-10-10" }, { "slug": "wise-statement-to-journal", "name": "Wise statement to Xero / QuickBooks journal with realised FX — free, private", "url": "https://marisstella.app/wise-statement-to-journal/", "category": "Compliance checks & evidence records", "description": "Free Wise to QuickBooks and Xero journal converter for multi-currency balances: values every row in your base currency at your rates, tracks average cost, books realised FX gain…", "pages": 1, "launched": "2026-10-06" }, { "slug": "wix-product-csv-check", "name": "Wix Product CSV Check — free, private, in your browser", "url": "https://marisstella.app/wix-product-csv-check/", "category": "Marketplace seller tools", "description": "Free Wix Stores product CSV checker: finds variants with no product row, choices that are not in the option list, product names over 80 characters, bad prices, TRUE/FALSE and…", "pages": 1, "launched": "2026-10-04" }, { "slug": "woocommerce-product-csv-check", "name": "WooCommerce Product CSV Check — free, private, in your browser", "url": "https://marisstella.app/woocommerce-product-csv-check/", "category": "Marketplace seller tools", "description": "Free WooCommerce product CSV checker: finds variations with no parent, duplicate SKUs, bad prices and sale dates, wrong GTIN check digits, broken image URLs, Excel-damaged SKUs…", "pages": 1, "launched": "2026-10-04" }, { "slug": "wordpress-plugin-review-check", "name": "WordPress Plugin Review Checker", "url": "https://marisstella.app/wordpress-plugin-review-check/", "category": "CI checks & developer gates", "description": "Free, browser-local checker for WordPress plugin developers: catches a readme.txt Stable tag that doesn't match your plugin's Version header, missing required readme/header…", "pages": 4, "launched": "2026-09-09" }, { "slug": "worker-classification-checker", "name": "Is your 1099 contractor really an employee? Free checker", "url": "https://marisstella.app/worker-classification-checker/", "category": "Service business pricing & quotes", "description": "Free worker classification checker for small business owners. Screen a contractor against the IRS test, the DOL economic reality test and the ABC test, see which facts point to…", "pages": 1, "launched": "2026-10-07" }, { "slug": "workers-comp-audit-dispute-checker", "name": "Workers' Comp Audit Dispute Checker — free", "url": "https://marisstella.app/workers-comp-audit-dispute-checker/", "category": "Marketplace seller tools", "description": "Free tool for small employers: enter your workers' comp premium audit worksheet and your own records, see which lines are worth disputing (overtime, uninsured subcontractors…", "pages": 1, "launched": "2026-10-12" }, { "slug": "workers-comp-premium-calculator", "name": "Workers' Comp Premium Calculator — free, with audit true-up", "url": "https://marisstella.app/workers-comp-premium-calculator/", "category": "Back-office money & contracts", "description": "Free workers' compensation premium calculator for contractors and small employers: class-code rates, experience mod, overtime exclusion, schedule debit, premium discount and the…", "pages": 1, "launched": "2026-09-30" }, { "slug": "workflow-audit", "name": "One GitHub Action, twelve workflow risks checked", "url": "https://marisstella.app/workflow-audit/", "category": "CI checks & developer gates", "description": "Add one free GitHub Action to scan your workflows for script injection, pwn requests, cache and artifact poisoning, leaked secrets, over-broad permissions and more. Read-only…", "pages": 1, "launched": "2026-10-16" }, { "slug": "world-clock-widget", "name": "What time is it there — and are they awake?", "url": "https://marisstella.app/world-clock-widget/", "category": "More free tools", "description": "A free world clock that shows current local time, sunrise, sunset, daylight length and whether each city is awake — for as many cities as you like, side by side. Sunrise and…", "pages": 3, "launched": "2026-09-16" }, { "slug": "xero-bank-statement-csv-check", "name": "Xero Bank Statement CSV Check — free, private, in your browser", "url": "https://marisstella.app/xero-bank-statement-csv-check/", "category": "Compliance checks & evidence records", "description": "Free Xero bank statement CSV checker: finds why a statement will not import or imports with wrong dates (rows above the header, separate Debit/Credit columns, bad amounts, mixed…", "pages": 1, "launched": "2026-10-05" }, { "slug": "xero-contacts-csv-check", "name": "Xero Contacts CSV Check — free, private, in your browser", "url": "https://marisstella.app/xero-contacts-csv-check/", "category": "Back-office money & contracts", "description": "Free Xero contacts CSV checker: finds duplicate contact names, missing columns, emails holding two addresses, bad payment terms, discounts out of range and Excel damage to phone…", "pages": 1, "launched": "2026-10-04" }, { "slug": "xero-invoice-csv-check", "name": "Xero Invoice CSV Check — free, private, in your browser", "url": "https://marisstella.app/xero-invoice-csv-check/", "category": "Back-office money & contracts", "description": "Free Xero sales invoice CSV checker: finds date-order conflicts, invoices whose lines disagree, missing columns, bad amounts, account names in the code column, tax rates typed as…", "pages": 1, "launched": "2026-10-04" }, { "slug": "yoga-pilates-studio-class-profit-calculator", "name": "Yoga & Pilates Studio Class Profit Calculator — free, private", "url": "https://marisstella.app/yoga-pilates-studio-class-profit-calculator/", "category": "Service business pricing & quotes", "description": "Free yoga, pilates and barre studio calculator: enter classes, reservations, the drop-in, pack and membership mix, late cancels, teacher pay and rent, and see profit per class and…", "pages": 1, "launched": "2026-10-11" }, { "slug": "youth-lineup-rotator", "name": "Youth Lineup Rotator — equal playing time, planned in seconds", "url": "https://marisstella.app/youth-lineup-rotator/", "category": "Service business pricing & quotes", "description": "Free youth sports lineup generator for volunteer coaches. Equal playing time, nobody benched twice in a row, goalkeeper turns shared, subs planned per period. 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