Open Sudoku

528 reviews
Content rating
Everyone
10K+
Downloads
Content rating
Everyone
Learn more
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About this 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
Open Sudoku is an Open Source Sudoku game.
Updated on
Aug 8, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

Ratings and reviews

492 reviews
Per Nystrom
July 27, 2020
So happy to have found this! It fixes the "problems" with the original from Roman MaŔek. And when I say problems, I mean that over the years the Android OS broke backward compatibility and you could no longer get to the menu. I don't blame the developer at all for this, but I'm thrilled that someone has taken it up and modernized it. Thank you!!!
18 people found this review helpful
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--
February 4, 2022
Open Sudoku, how did I not know about you before now?! Thank goodness I found you. I was still playing on the original, after it lost many of it's features. 1- you are fully functioning: filter out completed games, choose the theme colors, choose the kind of keypad, add my own puzzles, 2-no ads !!! 3- no intrusive permissions!!! Thank you so so much.
12 people found this review helpful
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Steve Shanafelt
August 28, 2026
Ideal sudoku experience. Customizeable, easy to access community content, no ads or permissions. It just works.
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What’s new

- New 'Puzzle info' option in game screen menu [Bart Uliasz]
- New 'Experimental Functions' option in Settings [Bart Uliasz]
- New cell value overwrite confirmation [Bart Uliasz]
- New 'Apply' button for hint function [Rainer Popella]
- Added random puzzle folder info toast [Bart Uliasz]
- Caching SUID and solutions [Bart Uliasz]
- Bugfixes and stability improvements [Bart Uliasz, Rainer Popella]
- Translations updates [Bart Uliasz, hamburger2048, Luan M. D. Lima, Rainer Popella]