Loan & Compound Calculator

Loan & Compound Calculator is the only app that combines auto loan, mortgage, and compound interest calculators into one clean, modern tool. No ads. No subscription. No data collection. THREE CALCULATORS, ONE APP Auto Loan Calculator • Instant monthly payment as you type • 50-state sales tax - pick your state, tax is calculated automatically • Trade-in tax deduction - knows which states allow it (8 don't) • Lease mode - residual value, money factor, depreciation + financing breakdown • Full amortization schedule • Extra payment simulator - see how much interest you save Mortgage Calculator • Principal & Interest monthly payment • PMI auto-calculated when down payment is under 20% • Property tax (state averages built-in, or enter your own) • Home insurance + HOA - see your TRUE monthly cost • Extra payment analysis - save thousands in interest • Full amortization schedule with monthly detail Compound Interest Calculator • Future value with regular deposits • Multiple compounding frequencies (daily, monthly, quarterly, annually) • Reverse solve - 'How much do I need to save monthly to reach $1M?' • Inflation-adjusted real value • Tax-adjusted returns • Rule of 72 quick estimate WHY THIS APP EXISTS Most loan calculator apps were last updated 4 to 12 years ago. They're slow, ugly, and missing critical features like sales tax, PMI, or lease calculations. We built one modern app that does all three - properly. • Real-time calculation - no 'Calculate' button, results update as you type • 50-state tax database - sales tax, trade-in rules, and property tax averages • Dark mode + landscape support • iPad native layout • Everything runs locally on your device - your financial data never leaves your phone FREE vs PRO Free: • Basic monthly payment for auto, mortgage, and compound • Core inputs (price, down payment, rate, term) • Dark mode, landscape, iPad support Pro ($4.99 one-time, all modules unlocked): • Sales tax calculation (50 states) • Trade-in tax deduction logic • Lease calculator • PMI, property tax, insurance, HOA • Full amortization schedules • Extra payment / early payoff analysis • Compound reverse solve, inflation & tax adjustment • Save unlimited plans • Compare two plans side by side • Export to PDF One-time purchase. No subscription. No ads. Ever.