ArityCalc
ArityCalc is a free, open-source utility app for Android. Scientific calculator for Android 5+. It has 200 GitHub stars and is released under the Apache-2.0 license, and you can install it from F-Droid.
- Android
- Java
- Utilities
- Actively maintained
About ArityCalc
Scientific calculator with complex numbers and 2D/3D graphing of user-defined functions. - Trigonometric functions - Combinatorial functions - Complex numbers - Binary, octal, hexadecimal numbers - Animated 3D graphing - Graphing multiple 2D function on a single graph - Graphing of derivatives for 2D functions - Screenshots of the graphs
Privacy and F-Droid
F-Droid builds ArityCalc from its published source code and flags anti-features such as ads, tracking or reliance on non-free services.
No anti-features flagged on the latest F-Droid build.
Screenshots
Screenshots from the app's F-Droid listing.
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What is ArityCalc?
ArityCalc is a free, open-source utility app for Android. Scientific calculator for Android 5+. It has 200 GitHub stars and is released under the Apache-2.0 license, and you can install it from F-Droid.
Is ArityCalc free and open source?
Yes. ArityCalc's source code is public on GitHub under the Apache-2.0 license, which is OSI-approved or FSF-free. F-Droid, which builds it from source, flags no anti-features such as ads or tracking on its latest build.
How do I install ArityCalc?
You can install ArityCalc from F-Droid (package org.woheller69.arity); the links are on this page. Its GitHub repository also publishes releases (latest: V1.59).
Is ArityCalc still maintained?
The repository's most recent commit was on Sep 29, 2026. Its F-Droid listing was last updated on Oct 2, 2026. appsgit only lists apps whose repository had a commit in the last six months.