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Open Sudoku

Open Sudoku is an Open Source Sudoku game.
New in version 4.11.1
- Edge-to-edge layout updates for Play Console requirements [Bart Uliasz]
- Translations updates [Andreas Pettersson, Bart Uliasz, bittin, Muha Aliss, RainSlide]
Open Sudoku is an Open Source Sudoku game.

Features:
• Without ads
• Puzzles can be downloaded from web, entered by hand or generated on the project's homepage
• Game stats (time spent, mistakes)
• Next step hints with multiple strategies suggestions
• Import to and export from a file
• Visual themes including custom theme editor
• Several input modes (finger-friendly numpad, popup, keyboard etc.)
• Double pencil marks
…and much more.

More information (including how to report ideas and issues) can be found on the project's home page: http://opensudoku.moire.org.

Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 4.11.1 (20260923) suggested Added on Sep 26, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.

    Download APK 40 MiB PGP Signature | Build Log

  • New in version 4.11.0
    - New "Hint" strategies: SDC (Sue de Coq) Type 1 and Type 2 [Rainer Popella]
    - New 'Sort puzzles by rating' feature [Rainer Popella]
    - Translations updates [Andreas Pettersson, Bart Uliasz, bittin, hamburger2048, Laur, Rainer Popella]
  • Version 4.11.0 (20260920) - Added on Sep 22, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.

    Download APK 40 MiB PGP Signature | Build Log

  • New in version 4.10.0
    - Add 'Validate pencil marks' feature to highlight invalid marks [Bart Uliasz]
    - Fix landscape pop-up keypad visibility and button sizing [Bart Uliasz]
    - Refactor SudokuBoardView measurement and update landscape layout [Bart Uliasz]
    - Optimize BaseThemeColor and 'Modify Cell Coloring Colors' dialogs for landscape mode [Bart Uliasz]
    - Improve theme selection UI and primary color preview in custom themes [Bart Uliasz]
    - Performance optimizations: caching game stats, batch updates for commands, and
  • Version 4.10.0 (20260817) - Added on Aug 21, 2026

    arm64-v8a

    This version requires Android 8.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.

    Download APK 40 MiB PGP Signature | Build Log