Financial Tools
Sixteen tools, from everyday money decisions to backtesting a strategy against real market history. Each opens in its own distraction-free page.
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Emergency Fund
Work out how big your safety net should be, and how long it takes to build. -
Tax Bracket Explainer
See how progressive brackets really work, and how much of a raise you keep. -
Credit Card Trap
See how long a balance really takes at the minimum payment. -
Net Worth Tracker
Add up what you own and what you owe. Saved on your device only. -
True Cost of Debt
See what a debt really costs, and whether paying it down beats investing. -
Rent vs Buy
Compare net worth both ways, including what the down payment would have earned. -
Loan & APR Checker
Find a loan's true cost once fees are included. -
Options Visualizer
See how options actually work: payoff shapes, time value, and the Greeks. -
Monte Carlo Simulator
See the whole range of outcomes for a savings plan, not one false-precision number. -
Strategy Backtester
Test an investing rule against real market history, measured against buy-and-hold. -
Compound Interest
See how a lump sum grows over time as interest compounds. -
Loan & Amortization
Estimate your monthly payment and see the full payoff schedule. -
Savings Goal
See how long it takes to reach a savings target. -
50/30/20 Budget
Split your take-home pay into needs, wants, and savings using the 50/30/20 rule. -
ROI
See how much an investment gained or lost against what you put in. -
Inflation-Adjusted Value
See what money from the past is worth in today's purchasing power.