Sudoku (Privacy Friendly)
Sudoku (Privacy Friendly) is a free, open-source game for Android. (SECUSO) Privacy Friendly Sudoku without permissions or advertising. It has 207 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
github.com/SecUSo/privacy-friendly-sudoku (opens in a new tab)
- Android
- Java
- Games
- Maintained
About Sudoku (Privacy Friendly)
Privacy Friendly Sudoku is a logic puzzle game. The goal is to fill the complete board with numbers. Every number may only occur once in every column, row and subsection. Privacy Friendly Sudoku has three different game modes: 1. a 6x6 game field with 2x3 subsections 2. a 9x9 game field with 3x3 subsections 3. a 12x12 game field with 3x4 subsections For each game mode there are four different difficulty levels that are not measured by the number of preset values, but rather by the solving strategies needed to solve the game. The generator always tries to provide a game that has the minimum amount of preset values needed to solve the game.
Privacy and F-Droid
F-Droid builds Sudoku (Privacy Friendly) 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 Sudoku (Privacy Friendly)?
Sudoku (Privacy Friendly) is a free, open-source game for Android. (SECUSO) Privacy Friendly Sudoku without permissions or advertising. It has 207 GitHub stars and is released under the GPL-3.0-only license, and you can install it from F-Droid.
Is Sudoku (Privacy Friendly) free and open source?
Yes. Sudoku (Privacy Friendly)'s source code is public on GitHub under the GPL-3.0-only 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 Sudoku (Privacy Friendly)?
You can install Sudoku (Privacy Friendly) from F-Droid (package org.secuso.privacyfriendlysudoku); the links are on this page. Its GitHub repository also publishes releases (latest: v3.2.6).
Is Sudoku (Privacy Friendly) still maintained?
The repository's most recent commit was on Apr 17, 2026. Its F-Droid listing was last updated on Feb 24, 2026. appsgit only lists apps whose repository had a commit in the last six months.