Contains adsIn-app purchases
594K reviews
Content rating
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About this game

You won’t be looking for a paper puzzle ever again!

With 4 difficulty levels, intuitive interface, and all the functions right at your fingertips, this Sudoku app is sure to be your favorite. Interrupted? Exit Sudoku, and the puzzle is saved exactly as you see it!

Want to know how you stack up against other Sudoku players? Upload your results to our servers and see for yourself, or take part in a weekly Sudoku competition.

* 4 difficulty levels
* 3 input modes: "Digit first", "Cell first", popup
* Pencil marks (a.k.a. Notes) with auto fill / erase option
* Selected digit and various other highlighting options
* Show digit counts option
* Auto-save
* Unlimited Undo and Redo
* Intelligent hints that use only logic
* Two levels of automatic error checking option
* Submit results and track progress online
* Top scores and History
* Real time competitions

Sudoku supports trackball, touch screen, keyboard.

NOTE: This application is ad-supported. You have a choice of ad formats: in-game banners or in-between games interstitials (shown once every three games or so). The screenshots depict playing with the full screen ad style selection.

NOTE: The INTERNET permission is required for competitions and game results upload. The READ and WRITE_EXTERNAL_STORAGE are needed for move-to-SD functionality.

Please contact our support team at if you have any questions, comments, or suggestions about improving this Sudoku app.

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Updated on
Jul 18, 2022

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
This app may collect these data types
Personal info and Device or other IDs
Data is encrypted in transit
You can request that data be deleted
594K reviews
Dmitri Lake
July 30, 2022
Really nice app, i love that the ads are banner style so it doesnt interrupt your game at all. My only criticism is that i wish there were harder puzzles available. The "expert" level (hardest puzzles) have 3 or 4 given numbers per 9-square block at the start of the game, so you start with about 1/3 of the numbers already filled in. Would love to have a harder game. Thanks!
38 people found this review helpful
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Chris Smith
August 10, 2022
I've used this app for years. Lately the ads have become increasingly distracting and malicious, with no way to report or close the suspect ads. The current ad blasts a red flag continuously, and if you try to cancel the banner, then it basically routes you to a sketchy Chinese site that is indecipherable. I have to keep closing the app because it will not go away. I guess it's time to find a new app and delete what has become a malicious app. Fun while it lasted. Now garbage. Update: garbage
50 people found this review helpful
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August 10, 2022
We take the quality of advertisements that go into out apps very seriously. The behavior you are describing is certainly not intended nor allowed. Would you be willing to work with us on identifying the offending ads and correcting this problem? If so, please email us to Update: still waiting to hear from you via email.
Steve Claflin
June 21, 2022
Generally good. Would be nice if more distinction between initial cells and my entries. Bold/not isn't much different on my screen. Only other option is TOO different. Bug on my android, which has tiny menu bar along upper right edge of screen: touching it while tapping digit into one of the cells it partly covers (col 9, rows 1,2,3) puts digit into row 1 col 7. Would like to see the full process of hint logic. Usually a few pencil steps I can follow, a pause, then a number, not always clear why
8 people found this review helpful
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What's new

- Introducing a new menu option to switch between Night and Day modes.
- Bug fixes and performance improvements.