Amortize — this site as an offline app

Amortize puts every calculator from this site into a free mobile app: mortgage, refinance, auto, personal and business loans, reverse mortgage, and payoff planners for a mortgage or a car loan you already have.

Every calculation gives you the same depth as the site:

• A full amortization schedule with yearly subtotals
• A chart of principal, interest and taxes you can tap year by year
• The exact payoff date and total interest over the life of the loan
• Extra payments — see how many years and how much interest they save
• CSV export of the whole schedule

The app is built for one-handed use: a numeric keypad made for money, a one-tap switch between dollars and percent, and results that slide in from the side. Your inputs are saved between sessions, and the app follows your light or dark appearance.

There is no account and no sign-up. Calculations run entirely on your device — the same math engine as this site, so the numbers always match — and they work even without an internet connection. A calculation can be shared as a link that opens right back in the calculators here.

Amortize is free on the App Store for iPhone and on Google Play for Android phones.