About WealthDeck

WealthDeck is a free, private collection of personal finance calculators that run entirely in your browser — no account, no server, no data collection.

Our mission

Good financial tools should not be locked behind paywalls, subscriptions, or forced sign-ups. Most personal finance software collects your data, sells it to advertisers, or nudges you toward financial products that benefit them, not you.

WealthDeck was built on a different principle: every calculation happens locally on your device using JavaScript. Your portfolio allocation, retirement savings, income, and spending figures never leave your browser. There is no backend, no database, and no way for us to see what you enter.

What you can do with WealthDeck

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Portfolio Stress-Tester
Simulate how Fed rate hikes and inflation shocks affect your portfolio in real time. See Sharpe ratio, volatility, and stress drawdown change as you adjust macro dials.
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Retirement Calculator
Project your retirement savings using compound growth. See nominal and inflation-adjusted values, plus your monthly income using the 4% safe withdrawal rule.
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FIRE Calculator
Calculate your FIRE number (25× annual spending), savings rate, and the number of years until you reach financial independence — all in real, inflation-adjusted dollars.

Privacy by design

Every WealthDeck tool uses a local-first architecture. This means:

✓ No account required ✓ No data leaves your device ✓ No cookies for inputs ✓ Works offline after first load ✓ No personal data stored

We use Google Analytics (anonymised pageviews only) and Google AdSense (which sets advertising cookies). See our Privacy Policy for full details.

Who is this for?

WealthDeck is designed for individual investors, people planning their retirement, and anyone curious about the FIRE movement who wants a fast, honest calculator that doesn't try to sell them anything.

The tools are built for educational purposes. They use well-established financial models (multi-factor beta sensitivities, the 4% safe withdrawal rule, compound growth formulas) with sensible defaults. They are not a substitute for professional financial advice.

Technology

WealthDeck is built with React and TypeScript, bundled with Vite, styled with Tailwind CSS, and hosted on Cloudflare Pages. All financial calculations are implemented directly in the browser using standard JavaScript — there is no external API, no data pipeline, and no third-party financial data provider.

Contact

Questions, feedback, or ideas for new tools? Reach us at dormidontjs@gmail.com.