# OpenCalc (open-source utility app)

> OpenCalc is a free, open-source utility app for Android. Simple and beautiful calculator for Android. It has 1,537 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid and Google Play.

A simple and beautiful calculator for Android Features * Lightweight (APK ~2MB) * No unnecessary permissions * Dark, Light, Amoled and Material You theme * Scientific mode * History * Portrait and landscape orientation * Quick Settings Tile * More...

## Key facts

| Fact | Value |
|---|---|
| Repository | https://github.com/clementwzk/OpenCalc |
| Platforms | Android |
| Built with | Kotlin |
| GitHub stars | 1,537 |
| License | GPL-3.0-only (open source) |
| F-Droid | https://f-droid.org/packages/com.darkempire78.opencalculator/ (package com.darkempire78.opencalculator) |
| F-Droid anti-features | none flagged |
| Google Play | https://play.google.com/store/apps/details?id=com.darkempire78.opencalculator |
| App Store | not linked |
| Website | none listed |
| Official | no |
| Category | Utilities |
| Latest release | v3.2.1 (Sep 21, 2025) |
| Last commit | Jul 10, 2026 |

F-Droid builds its apps from source and flags anti-features: https://f-droid.org/en/docs/Anti-Features/

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