Free tools
Tools worth bookmarking
Practical calculators and checkups that run entirely in your browser. No accounts, no tracking, nothing sent anywhere.
Mortgage Calculator
Monthly payment, full amortization schedule, extra-payment and biweekly payoff analysis, and a refinance breakeven check.
Open the calculatorInfinite Banking Calculator
Model Nelson Nash's Infinite Banking Concept: build cash value in a dividend-paying whole life policy and compare policy loans against bank loans.
Open the calculatorCode Doctor
Is your AI-built app safe to launch? Paste your code for a free doctor's report: exposed secrets, broken logins, SQL injection, rate limits, leaky errors.
Examine my appMore tools are on the way. These are educational tools, not professional advice.