OpenCalc
Simple and beautiful calculator for Android
| AppID: | com.darkempire78.opencalculator |
| Author: | Darkempire |
| License: | GPL-3.0-only |
| Donation: | Webpage |
| InRepoSince: | 2022-07-27 |
| LastRepoUpdate: | 2025-09-22 |
| LastAppUpdate: | 2025-09-21 |
| LastVersion: | 3.2.1 |
| Categories: | Office |
| APK source: | Github |
| Google Play: | Check if it's there |
This modern and beautiful scientific calculator will help you solve all your calculations. It is simple, effective and contains no advertising. It has different themes to suit your phone perfectly.
The app allows you to do simple and quick calculations with many basic functions, including multiplication, division, root, powers, factorials and even trigonometry functions. OpenCalc is customizable to meet all your needs.
Contains no unnecessary ads or permissions. It is fully open source.
Hint: This app is available in both, F-Droid Main and IzzyOnDroid repos.
Anti-Features: NoSourceSince: Upstream source for this app is no longer available. Either the app went commercial, the repo was dropped, or it has moved to a location currently unknown to us. This usual means there won't be further updates unless the source reappears.
While you can download the APKs here directly, you should preferably use an F-Droid client so the app stays up-to-date on your device. Some clients have this repo enabled by default, e.g. Neo Store, Droid-ify, or, of course, the IzzyOnDroid client by Sunil. With others (like the official client) you'll have to add this repo manually (see the hint on top of the package list for how to do that).
