Sudoku by Brainium is the #1 classic Sudoku game you know and love for your phone and tablet, and the best way to learn and improve your skills in this classic puzzle game.

With our Sudoku app, not only will you play a beautiful user-friendly Sudoku, but you’ll have access to the world’s most friendly and complete mobile Sudoku learning system.

With every puzzle, our “Hint” button can teach you the techniques you need to make progress. The instructions are easy to understand and unique for every puzzle with helpful animations, and colorful visuals. The hints don’t just give you the answer, they help you learn “why” the answer is what it is. This feature will help you learn all the techniques you need to solve Sudoku puzzles whether you’re a complete novice playing your first game, all the way to the expert difficulty.

Enjoy a clear, easy to read and customizable Sudoku board with visual guides that make glancing at the possibilities a breeze. 

Our input system is designed to make entering solutions and notes magically simple and our friendly scoring system allows you to compete with yourself or your friends regardless of skill level.

Sudoku by Brainium is the most beautiful, learnable, and user-friendly Sudoku game you've ever played before.

• The world’s most advanced Sudoku learning tool
• The hints will give you the answer but also explain and teach you why the answer is what it is
• Five perfectly balanced difficulty levels from beginner to expert
• Two beautiful grid styles
• Choose light or dark grid fonts with adjustable size
• Endless collection of masterfully crafted puzzles
• Useful statistics to keep track of your progress
• Unlimited Undo/Redo
• Auto-Fill Notes Option
• Auto-Clear Notes Option
• Auto Error-Checking Option
• Portrait and Landscape Views
• Advanced game options and notes
• Five gorgeous themes
• Universal App looks great on iPhone and iPad
• Global and friend leader boards
• Portrait and landscape play options
• Right or left handed option in landscape

We hope you enjoy Sudoku by Brainium, and please contact our five star support if you have any questions :-)

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Thanks for playing!

What's New

Version 2.3.30

We'd like to thank all of our players for being so awesome. Here's another update for you!
- Bug fixes and performance improvements

Ratings and Reviews

4.7 out of 5
71.4K Ratings
71.4K Ratings

Best sudoku app I’ve ever seen, with a tiny quibble

I love the features here, like the number paint tool and the auto fill so I can get right into the meat of the puzzle, and I love how the hints are educational about the puzzle theory, instead of just telling me what goes in that square. I appreciate that the ad plays before the puzzle instead of part way through breaking my concentration, or after the puzzle and downing the happiness of solving it. I also like that the majority of the ads either have no sound, or are muted by default. I love this app so much!!

The only issue I have is what I think is just a bug, where on my iphone 6, I can’t access the leaderboard, but I can see it just fine on my ipad. When I click the scores button, it just flashes the animation, but doesn’t actually take me to the screen. Since I mostly do this from my phone, it’s kinda disappointing, so I would love if that was fixed sometime.


Love the game

This is a very fun and addicting game. Some of the hints actually teach you strategies to solve the puzzle. I like that it's all digitized and orderly. The only reason I didn't give it 5 stars is that the little possibility numbers are white and hard to see against the light background. My suggestion would be to fix that AND have an auto fill button. Sometimes, after solving one square, it eliminates numbers in other squares, leaving one number in a square so you solved THAT square too so you solve THAT square and it leaves one number in another square...etc. why not have an auto fill option so you can have the game automatically make the obvious little numbers big numbers. Also, and idk if this is possible, but I bought the full version but I'm still seeing ads. Any way of taking them off?

Developer Response

Hi Mrsshepherd- Thank you for the fantastic feedback! The paid version is actually a separate app, so it sounds like you're accidentally still using the free version. If you search your iPhone or iPad for "Sudoku" you should see two icons- one with a gold border (the paid version) and one without. Delete the one without a gold border and you'll be good to go!
To search your iPhone/iPad just drag your finger downwards anywhere on the home screen, and a search bar will appear at the top.
To delete an app just press the icon on your home screen and hold until it starts to wiggle and a little "x" appears in the corner- press the "x" to delete it. It's possible the paid version was accidentally deleted, but you'll be able to download it again for free using the original purchasing Apple ID.


Good puzzles, frustrating interface

The puzzles are good overall, although Hard puzzles can be solved by looking mostly at naked pairs and simple elimination. Expert level puzzles utilized swordfish a lot, at least in the puzzles I played. There are a lot of Sudoku games out there and ultimately for me it comes down to interface. I found myself hitting the wrong number multiple times and the highlighted squares blend so well with the background it makes them difficult to see. Since you are playing against the clock to boost your score, this can be quite frustrating. Undo is a two step process. Finally, there is no way to purchase your way out of seeing the pop up ads, so those are there for you to enjoy forever. The hint system is quite good and educational, truly the best part of the app.

Developer Response

Hi AnimalRN- Thank you so much for the feedback! If you go to "THEMES" on the main menu you can choose a white and black Grid Style that should make the darker background of incorrect squares much easier to see. We do have a paid, completely ad-free version of Sudoku available! Here's the link:


Brainium Studios LLC
177.7 MB
Requires iOS 8.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Brainium Studios


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