Sudoku Clean is a truly ad-free Sudoku app that teaches you to solve with logic, not guesswork.
Stuck? Get a gentle nudge first, then the full reasoning: which number goes where, and exactly why. Every hint explains the technique behind the move, so you get a little better with every puzzle.
FEATURES
• Truly ad-free: no banners, no video ads, no interruptions
• Step-by-step hints that explain the logic behind every move
• Advanced techniques explained clearly: X-Wing, XY-Wing, Two-String Kite, chains and more
• 60+ technique drills to practice one skill at a time
• 40+ illustrated guides, from the basic rules to expert strategies
• Killer Sudoku with cage-sum hints
• Puzzles from easy to expert, plus curated 17-clue challenge seasons
• Snap a photo of a paper puzzle and solve it step by step, recognized on your device with no upload
• 12 built-in themes, dark mode, or design your own
• Notes, auto notes, undo, statistics and game history
• Play offline, anytime
FOR EVERY LEVEL
New to Sudoku? Start with the basics and learn at your own pace. Already an expert? Take on hard puzzles and master advanced techniques.
No ads. No distractions. Just Sudoku, logic and steady progress.
I’ve played a lot of Sudoku games, but this one really stands out. The integration of prime numbers adds a whole new layer of depth and strategy to the puzzle. It’s challenging without being frustrating. If you love logic puzzles and want to give your brain a real workout, I highly recommend downloading this. A refreshing take on the genre!
Developer Response
Thank you for your support. ❤️
Okay but not easy to use for different play styles
Selina Feldmann
I really wish that when I clicked on the numbers selection of the screen: that the game would then allow me to enter the number into multiple spots on the game board that I would click on the spot to choose where I want to place that number. It would make entering all of the same number onto the board a lot easier. Which in turn would make my game playing time go down and the game easier to complete faster.
Developer Response
Hi, I get what you mean. I will add this feature in the near future. Thank you so much for your feedback.Hi, the function has been added. Please update to the latest version to enable the lock input mode in the settings. Thank you for your feedback.
Surprisingly Tough!
Kindajdh
Really smooth to play, and the puzzles get hard fast. Great pick if you like a real challenge.
Developer Response
🤓Thanks
Sudoku Clean
Skysailer
Great app. Nice colors and text sizes can be modified. I can't find landscape mode anywhere, that I my only criticism.
Developer Response
Hi,Portrait mode is only supported on the iPad, not on phones. It automatically triggers when the screen is unlocked and in portrait orientation.
Introducing Daily Challenges! Take on a new Sudoku puzzle every day, starting November 1.
Version 2.7.0
The developer, 哲庆 史, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
The developer indicated that this app supports the following accessibility features. Learn More
