Mechanical Calculator

Want a calculator that lets you see every step? Mechanical Calculator keeps the receipt-style paper tape and classic print feel, then adds built-in tools for unit conversions, bill splitting, and interest calculations.

Why you'll like it

Paper tape history records entries, operations, and results like a receipt.
Calculator with full operator support and percentage functionality.
Bill Splitter tool for splitting costs with even or uneven shares, including tip handling.
Unit Converter supporting common length, weight, volume, and temperature conversions.
Interest Calculator with multiple modes: simple, backwards, compound, and savings scenarios.
Random Generator for creating number sequences and random values.
Optional print animation and sound effects add a mechanical calculator feel.
Landscape mode and export options (TXT, CSV, PNG, JPG, PDF) make reviewing or sharing results easy.

Great when you want to...

Check school, work, or home calculations without losing the trail of how you got there.

It is especially handy when you want a visible running history, a quick unit conversion, a way to compare interest scenarios, or an easier split for a shared bill without jumping between apps.

Privacy at a glance

No account is required.
Calculations, tape history, and tool data stay on the device.
Optional ads use Google AdMob and can be disabled in Settings.
Exports are generated locally before the Android share sheet is opened.

Need the details?

Want the official policy or terms before you use or share the app? Both links are right here.