15.9K reviews
Content rating
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About this game

OpenSudoku is an open source sudoku game.

- Several input modes (finger-friendly, numpad in the bottom of screen etc.)
- Puzzles can be downloaded from web or entered by hand
- Game time and history
- Export to sdcard
- Themes

Any suggestions? Go to, your feedback is welcome
Updated on
Mar 20, 2011

Data safety

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No information available
15.9K reviews
February 4, 2022
Great features in that you can turn off/on error checking, note taking, etc. No ads is wonderful! The only reason I didn't give 5 stars is that I had to reinstall it (no fault of the app) and it lost the ability to filter the games by whether they were completed or not, and lost the ability to populate a blank grid with a custom puzzle. I really miss both of those features.
1 person found this review helpful
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A Google user
January 22, 2020
Ad Free. Claims you can add more puzzles, but that functionality either doesn't work or is unexplained and unintuitive. Website for support is dead, which means you can't read up on how to do it. Really needs a way to generate new puzzles on the fly, and needs to make it easier to add the new puzzles. Menu IS there in Android 10, just smushed to only one line (but you can scroll it). If I could add more puzzles, this would be a 4.6 star.
5 people found this review helpful
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A Google user
April 12, 2019
With most sudoku apps, it will tell you if you've placed a number incorrectly. This one only checks to see if that number already appears in the same row or block. I thought I found an unsolvable puzzle once, but I later realized that it hadn't told me that one of my numbers was incorrect. The UI is aesthetically unpleasing but functional. Otherwise, the app is fine. I do appreciate that it's completely ad free.
8 people found this review helpful
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What's new

- Fixes crashing on Android 3 (issue #148).