Mortgages, loans, savings, budgets, conversions, health, home projects and kids' math practice. ALL 212 Calculators in one app that runs on your device.
Android APK or web app for iPhone and desktop. $14.99 each.
Move the sliders. It is the same math the app uses.
Estimate for planning. Excludes taxes, insurance and fees. Your lender's terms will differ.
Every calculator shows its answer, the steps behind it, a chart where it helps, and the formula and assumptions. Light and dark themes included.
Inputs on the left, results, charts and tables on the right. Copy a result, print it, export it as CSV, or save a scenario to compare later.
Same calculators in both plans. Choose the one that fits your device.
An app file for Android phones and tablets.
You may need to allow installs from your browser or files app, since this APK does not come from the Play Store.
For iPhone, iPad, Mac, Windows and Chromebook.
On iPhone, open the link in Safari, tap Share, then Add to Home Screen.
Only to download or open it the first time. After that, the calculators run on your device and work offline.
On your device only. Favorites, history, saved scenarios and kids' quiz scores stay in the app and are never sent anywhere. You can delete them from the History page.
The math is tested against known answers. Results for loans, taxes, health and materials are still estimates, because real lenders, tax rules and products differ. Each calculator lists its assumptions.
No. The currency, VAT and paycheck tools use rates you enter yourself, so you always know what the answer is based on.
Each plan is for its own platform: the APK for Android, the web app for iPhone and desktop browsers. Buy the plan that matches the device you want to use.
The Kids Learning Center collects no names or personal information and shows no ads. Scores stay on the device.