package icon

Open Sudoku

Open Sudoku is an Open Source Sudoku game.
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
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 4.10.0 (20260817) suggested 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

  • New in version 4.9.0
    - Experimental Puzzle Scanning feature improvements (portrait scanning support, new 'Edit' button, OCR engine migrated to FOSS-compatible TensorFlow Lite) [Bart Uliasz]
    - New 'with mistakes' and 'with hints' filter options [Bart Uliasz]
    - Improved primary color selection for custom themes [Bart Uliasz]
    - Full edge-to-edge support for all major screens [Bart Uliasz]
    - Updated targetSdk to 37 [Bart Uliasz]
    - Translations updates [Bart Uliasz, Andreas Pettersson, hamburger2048]
  • Version 4.9.0 (20260803) - Added on Aug 14, 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 4.7.0
    - New Puzzle Rating feature [Rainer Popella]
    - New feature to select fonts for digits [Andras Porjesz]
    - New translation to Greek! [Michalis]
    - Bugfixes/improvements [Bart Uliasz]
    - Existing translations updates [大王叫我来巡山, Andreas Pettersson, Bart Uliasz, Joan Montané, Michalis, ssantos, Ștefan Zaharia]
  • Version 4.7.0 (20260625) - Added on Jun 26, 2026

    This version requires Android 8.0 or newer.

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

    No permissions

    Download APK 3.1 MiB PGP Signature | Build Log