Ninja Sudoku – Hints & Solver
Contains adsIn-app purchases
4.5star
461 reviews
50K+
Downloads
Everyone
info
About this game
Ninja Sudoku: The ultimate offline Sudoku app!
Enjoy classic Sudoku, Killer Sudoku, Jigsaw, and X Sudoku — over 300,000 puzzles from easy to expert. Play ad-free, scan puzzles with your camera, get unlimited smart hints, and improve your skills with built-in logic strategy explanations.
🧠 Features:
✓ 300,000+ puzzles in 5 difficulty levels
✓ No ads while playing
✓ Scan Sudoku from camera or image
✓ Play Classic, X, Jigsaw & Killer Sudoku
✓ Smart solver with logical step-by-step hints
✓ Clean UI, fast input, auto-candidates
✓ Notes, undo/redo, highlight duplicates
✓ Learn techniques: X-Wing, Y-Wing, Naked Pairs, and more
💡 Brain Boosting Benefits:
Playing Sudoku daily improves memory, reduces stress, and sharpens focus. It’s the perfect mental workout for all ages.
Install Ninja Sudoku now and train your brain the smart way — anytime, anywhere!
Enjoy classic Sudoku, Killer Sudoku, Jigsaw, and X Sudoku — over 300,000 puzzles from easy to expert. Play ad-free, scan puzzles with your camera, get unlimited smart hints, and improve your skills with built-in logic strategy explanations.
🧠 Features:
✓ 300,000+ puzzles in 5 difficulty levels
✓ No ads while playing
✓ Scan Sudoku from camera or image
✓ Play Classic, X, Jigsaw & Killer Sudoku
✓ Smart solver with logical step-by-step hints
✓ Clean UI, fast input, auto-candidates
✓ Notes, undo/redo, highlight duplicates
✓ Learn techniques: X-Wing, Y-Wing, Naked Pairs, and more
💡 Brain Boosting Benefits:
Playing Sudoku daily improves memory, reduces stress, and sharpens focus. It’s the perfect mental workout for all ages.
Install Ninja Sudoku now and train your brain the smart way — anytime, anywhere!
Updated on
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.
This app may share these data types with third parties
App info and performance and Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted
Ratings and reviews
4.4
432 reviews
Ramakant Kulkarni
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July 25, 2025
Earlier app was very good. In new app we cannot load data manually. Scanned image sometimes show error.
m00nlight
August 1, 2025
Hi Ramakant, we just released a new version which add old manual input method to input a game. Hope this will resolve your issue. If you have any other suggestion or feedback, you're welcome to contact us in the app(using send feedback button) or leave comment here. Thanks for your feedback. Really appreciate.
Ravi J S Bhat
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June 30, 2020
Good sudoku app! In the couple of other sudoku apps that I've tried the difficult levels were too easy. This app is not so. Some features that ie would like to see: 1. When I click a cell the row, column and that square are highlighted. Would like some way to disable that. 2. When I click a cell and then hit notes it won't start entering the notes in the cell. I have to click the cell again. 3. Hints do not take into account the possibilities that I've already eliminated.
16 people found this review helpful
m00nlight
June 30, 2020
Hi, thanks for your feedback. We will add 1) in future release. For problem 2), we actually fix the problem in the latest release. And for 3), you could enable "generate notes when start" in advanced setting to get more consistent hint experience. So for 2) and 3), could you please discuss with us through m00nlight.appdev@gmail.com if possible?
terry fetzer
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June 8, 2025
love your sudoku game but have a question. if you have solved all the puzzles on one level is there a way you can reset the level to play them all again?
m00nlight
June 9, 2025
Hi Terry, thanks a lot for your review! 😊 Glad you're enjoying the game. You can clear your playing records in the Statistics section—just tap the three-dot button at the bottom and you will see it. Just note it will erase all records, not just for one level. Hope that helps!
What’s new
1. Add support for manual input for the custom game and solver.
2. Number first mode add feature to un-select selected number by tapping it again when selected.
2. Number first mode add feature to un-select selected number by tapping it again when selected.
App support
About the developer
Yushi Wang
m00nlight.appdev@gmail.com
Hermitage 134
1506 TX Zaandam
Netherlands
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