NerdCalci
NerdCalci is a free, open-source utility app for Android. Calculator for nerds with variables, syntax highlighting, and file sessions. It has 213 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid and Google Play.
- Android
- Kotlin
- Utilities
- Actively maintained
About NerdCalci
NerdCalci is a powerful calculator designed for nerds and power users who need more than basic arithmetic. Features: - Offline - Works without internet - Variable support - Define variables and reuse them in calculations - Percentage calculations - Natural syntax like "20% of 50000" or "15% off 1000" - Unit conversions - Natural syntax like "10 m in feet" or "100 kmph to mph" - Calendar-aware date and time engine with timezone support - Custom functions - Define your own functions with multi-statement support and scope isolation - Dynamic variables - Quickly compute block sums (total) and averages (avg) - Syntax highlighting - Color-coded numbers, variables, operators, and comments - Smart…
Privacy and F-Droid
F-Droid builds NerdCalci 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 NerdCalci?
NerdCalci is a free, open-source utility app for Android. Calculator for nerds with variables, syntax highlighting, and file sessions. It has 213 GitHub stars and is released under the GPL-3.0-or-later license, and you can install it from F-Droid and Google Play.
Is NerdCalci free and open source?
Yes. NerdCalci's source code is public on GitHub under the GPL-3.0-or-later 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 NerdCalci?
You can install NerdCalci from F-Droid (package com.vishaltelangre.nerdcalci) and from Google Play; the links are on this page. Its GitHub repository also publishes releases (latest: v4.9.7).
Is NerdCalci still maintained?
The repository's most recent commit was on Aug 26, 2026. Its F-Droid listing was last updated on Aug 27, 2026. appsgit only lists apps whose repository had a commit in the last six months.