OpenCalc
A lightweight, open-source calculator app for Android with scientific mode, multiple themes, and no unnecessary permissions.
What is OpenCalc?
OpenCalc is an open-source calculator application for Android that provides a simple yet powerful calculation experience. It solves the problem of bloated, permission-heavy calculator apps by offering essential features in a lightweight package that respects user privacy. The app includes scientific functions, calculation history, and multiple theme options while maintaining a small footprint.
Android users who need a reliable, privacy-respecting calculator app without unnecessary bloat or permissions. Particularly suitable for students, professionals, and privacy-conscious individuals who perform basic to advanced mathematical calculations.
Developers choose OpenCalc for its commitment to privacy (no unnecessary permissions), lightweight design (~2MB APK), and fully open-source nature under GPLv3. Unlike many calculator apps, it provides advanced features while maintaining transparency and user control.
Overview
A simple and beautiful calculator for Android downloaded more than 300k times
Use Cases
Best For
- Android users who want a privacy-focused calculator without unnecessary permissions
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