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
Alice Fontes
January 12, 2023
App works well and is easy to use. Ads are unobtrusive which I like. The down side is the puzzles are too easy. I'm not good a sudoku, when I get a sudoku book or have used other apps, the best I can do without helpers is usually medium. Here, however, I can solve an "extreme" difficulty puzzle while multitasking at work fairly quickly. Even without using the pencil feature at all. Sometimes i use the autofil to speed run and can do that in about 3 minutes. Good app, needs harder puzzles.
3 people found this review helpful
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Suzi Grant
January 1, 2023
Ad banner at the top of the screen, easily ignored. Great setting features for highlighting, adding notes, and keeping track of numbers. I haven't found a sudoku app I like more. My sister loves to do hard puzzles and she said the experts feel like real hard puzzles, while the hard feel more like medium, but she's been doing difficult sudokus for years. I've loved the easy, medium, and hard sudoku puzzles of this app. You won't be disapponted!
6 people found this review helpful
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Rose Athena (Nightshade)
February 1, 2023
Amazing game! No internet needed, good puzzle difficulty ranking, unobtrusive adds -- only issue is it seems you can't really switch scores between devices (bye-bye 1:46 extreme D : you will be remembered) Also if the game crashes (only happened on my old kindle, not a big issue) then you can open the last puzzle but reset, so if you remember what the right numbers are you can just fill them in and do the puzzle really quickly lol
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What's new

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