● Catalog
All spreadsheets and kits
Every formula recalculated and checked against an independent calculation before listing. Each one comes with a filled-in sample file.
Budgets and saving5 tested
Monthly Budget Planner (50/30/20)
Your own split, up to 30 categories, month and year views, budget vs actual with overspending flagged, and your real savings rate.
✓ 0 formula errors · every month, bucket and category checked independently$9
Paycheck Budget Planner
Every bill assigned to the paycheck before it's due, with what's left and your running balance for 12 months.
✓ 3,776 formulas · 0 errors · every bill's paycheck regenerated independently$8
Sinking Funds Tracker
Every irregular bill in one place: what to set aside each month, which funds are on track, and what's short.
✓ 1,074 formulas · 0 errors · every balance and status recomputed independently$7
Subscription Tracker
True monthly and yearly cost of every subscription, next renewal dates, and what cancelling saves.
✓ 0 formula errors · costs and renewal dates checked independently$7
Net Worth Tracker
One balance per account per month: net worth, monthly and 12-month change, and where your money and debt sit.
✓ 440 formulas · 0 errors · dashboard recomputed independently in 8 scenarios$7Debt, home, car and retirement4 tested
Debt Payoff Planner: Snowball vs Avalanche
Up to 15 debts: debt-free date and total interest for both methods, with the minimum rollover done right.
✓ 45,556 formulas · 0 errors · matches an independent month-by-month simulation$9
Mortgage Payoff Planner
What extra payments really save: new payoff date, interest and time saved, and the monthly extra that hits your goal.
✓ 6,261 formulas · 0 errors · matches an independent simulation to the cent$9
Rent vs Buy Calculator
Month by month: mortgage, PMI, taxes, upkeep and selling costs vs rent, with the difference invested. What you'd have, and the year buying starts to win.
✓ 5,883 formulas · 0 errors · 30 years checked against an independent simulation$9
Car Loan vs Lease Calculator
Put a loan offer and a lease offer side by side: real lease math, the true cost over the lease term and over the years you'd keep the car.
✓ 779 formulas · 0 errors · every figure checked to the cent in 9 scenarios$8Life events1 tested
Freelancers, Etsy sellers and landlords6 tested
Freelancer Bookkeeping & Tax Set-Aside Tracker
Log income and expenses; see monthly profit, your tax set-aside at your own rate, and the uneven IRS estimated-tax periods.
✓ 2,147 formulas · 0 errors · dashboard checked against an independent calculation$12
Freelancer Invoice Tracker
Who owes you what, how overdue each invoice is (1–30 / 31–60 / 61–90 / 90+), partial payments, and average days to get paid.
✓ 3,763 formulas · 0 errors · every invoice's status and aging checked independently$9
Etsy Profit & Fee Calculator
Every Etsy fee, your real profit per item, and the exact price for a target margin, with Offsite Ads and its $100 cap.
✓ 0 formula errors · fees match an independent calculation to the cent$8
Maker Inventory & Cost Tracker
True cost per handmade item from recipes and real material prices, Etsy fees, profit, and reorder alerts.
✓ 1,540 formulas · 0 errors · costs, stock and profit checked independently$12
Rental Property Cash-Flow Tracker
Up to 10 properties: NOI, cap rate and cash-on-cash computed correctly, with the mortgage calculated and capex kept out of NOI.
✓ 0 formula errors · mortgage and every metric checked independently$12
Short-Term Rental Host Tracker
Occupancy, payout per night and net income per month for Airbnb, Vrbo and direct stays, with stays that cross months split correctly.
✓ 4,598 formulas · 0 errors · matches a night-by-night calculation$12Server and Claude Code3 tested
Agent Ops Kit
Run Claude Code as a long-lived server admin: standing rules, preflight audit, Telegram check-ins and a tax-reserving ledger.
✓ every script run on a live Ubuntu 24.04 server$19
Single-VPS Self-Hosting Starter
Uptime Kuma, Vaultwarden, Umami, Forgejo, n8n and ntfy behind Caddy HTTPS, with backups whose restore has been tested.
✓ 6 apps up with 0 public ports · backup, destroy and restore tested$12
CLAUDE.md Template Pack
4 project templates, path-scoped rules, a safe settings.json and tested hooks that block rm -rf, force pushes and reading .env.
✓ hook blocks 22/22 test cases · end-to-end tested in Claude Code$9