Brainium Studios LLC

Price Category Version Released Last Updated Size Compatibility Age
Free Games 2.3.16 Feb 10, 2011 Dec 11, 2017 174.5 MB iOS 8.0 or later 4+
New in version 2.3.16

Thanks for all your support, and for playing Sudoku!
- Updated game saves to increase reliability
- Adjustments to make the 'Floating Keys' feature more usable


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 :-)

For the latest exciting news and updates on Brainium games:

LIKE us on Facebook

Follow us on Twitter

Or visit us at:

Thanks for playing!

iPad Screenshots
Are you a new app developer?
Tapnova can help put your app in front of hundreds of app enthusiasts! Contact us for more information.
Excellent Sudoku
Ashforder on 5/24/2018
I look for sudoku that has hint feature that suggests thought process, not just filling in answers. This does, with minimal ads. My new favorite free sudoku.
Bella_Gwin on 5/20/2018
Though I wish it had different size modes (ex. 6x6 grids) it's still a good way to play.
Ads lockup app
lukeswr on 5/16/2018
Pros: I like the way notes are managed and possible locations are colored. Scoring accounts for both play time and accuracy. Cons: You cannot buy the app to get rid of ads. Ads have become increasingly obnoxious and lockup the game. I have to reboot phone to unlock game. It is difficult to clearly know which numbers are completed on the board.
Awesome but Easy
Shagows on 5/15/2018
I love sudoko and all of the other apps count my “mistakes” and after a certain amount of “mistakes” the game was over. The thing about it was even though there was two places it could go in it would count it wrong if I didn’t put it in the spot the computer was supposed to know. This one doesn’t have that. I did expert and I’m 11.
cetacus on 5/13/2018
Ad freezes app
Jiang Fan on 5/13/2018
The app works when it does. However, some ads freeze the app.
Good fun for a time.
Tumbleweed2015 on 5/13/2018
I was playing all the levels, at least once a day. Today I got to middle level, and somehow ended up with a blacked out screen. Unable to clear, so I had to delete the app and reload. I was about to finish round 50. Update: when I finished a game and went to the next level, another game shows up to try. In my case, a video slot machine shows up and an arrow is pointing to the start button. There is no “x” to exit out. When I touch the black border, it just shows a blacked out screen with no way to exit. I am then forced to delete the app, and then reload it. I enjoy the game, but not this side effect. Please fix this.
Very cool!
Oldirtybaffler on 5/13/2018
Neat interface. Actually explains advanced strategies and tactics. Very easy UI to learn and use. Expert is EXTREMELY challenging! Wish I could load my own games though.
5 ßtærß
McMeghan on 5/11/2018
I’s fun and challenging and also a addictive game really fun to play and just saying I’m very smart so to me it is a little to easy
Jennyb9 on 5/11/2018
A million ads
Charlie19440504 on 5/11/2018
Latest version has bug that allows ad to blank screen and cannot recover.
Used to be the best
The Monkey Eats Custard ;o) on 5/11/2018
The was the best Sudoku ever! Now the worst! The new ad campaign has taken over. Casino ad forces you to go thru the motions of the ad (play) then forces you to open the Play Store. In other words, there is no “x” to quit the ad! That’s absolutely ludicrous! I don’t mind ads, I realize this is how the developers make money. But forced play within any ad is not worth it, therefore I will not play this game until this issue is resolved. I’m sorely disappointed.
Good game with optional hint
jaoKai on 5/8/2018
I have a hard time telling apart different block, column, and row colors maybe due to not enough contrasts.
Ads are annoying
Settlersue on 5/8/2018
Ads are annoying but otherwise the game is good. It is free
Great App
Namaste911 on 5/7/2018
Easy to see the screen, helpful hints and nicely done coding.
Very good, too many ads
kbcmdba on 5/3/2018
Reduce the amount of ads in order to get 5 stars. :-)
pixie 56 on 4/30/2018
Having fun recognizing numbers. Being dyslexic and 81 year old the game stimulates my mind and hand eye coordination. Thank you.❤️🌈💥💥
Good game, but intrusive ads
PipsFan on 4/30/2018
I enjoy the game, but the ads are really annoying. I’d be willing to pay $1-2 to get rid of them, but I don’t see an option for that. Otherwise, the interface is very user-friendly and intuitive, and the puzzle difficulty is pretty accurate and standardized.
pHeguvu6 on 4/30/2018
Very nice
Ge246 on 4/26/2018
Very challenging and is lots of fun. I recommend it.
Great game BUT...
Ileya on 4/24/2018
...too many ads. Exit an ad and the same one, part 2, pops up. Over and over.
Eve$ter on 4/24/2018
cmakeart on 4/18/2018
Love it
Mtn Wildflower on 4/18/2018
I really enjoy this game except if you accidentally hit a wrong key, it can’t be changed or erased and points are taken away. I will delete this app for that reason.
Can’t put the game down once I pick it up
sister beautiful on 4/17/2018
Love it
Lost feature
RattyMom1979 on 4/17/2018
I had this app on my Android and I used the paint option constantly, allowing me to repeat a number so easily. Now I've had to switch to an iPhone and that feature is no longer available. Any reason why? You'd get a 5 otherwise.
Tracy92 on 4/15/2018
Great App, very clean and easy to use!
vaysj on 4/8/2018
It’s too hard to see the little numbers in the boxes showing possible solutions.
Tough puzzles
IppySue on 4/8/2018
The Extreme level is no joke
Pbrenewell on 4/4/2018
As a senior I feel that it is important to challenge myself daily. This game helps.
John zong on 4/2/2018
Lo mejor
Papirau on 4/1/2018
Excelente para ejercitar la mente y ayudarnos a ocupar los momentos de espera de la señora mientras hace sus compras y no desesperarnos y así dañar el día Abrazos
Time Killer
criley8832 on 3/29/2018
Good, fun, time killer. Hate the ads.
Great game
Techasaurus on 3/27/2018
All the ads get annoying but the game is good. 😊
dan!elle 👾 on 3/23/2018
I love playing this game, so relaxing :) love the little sound effects and music. Another great thing about it is the ads aren’t too long at all either!
Best sudoku app I've ever used
Cannotstopplaying on 3/22/2018
I learned many new strategies from this app. I've never seen such features from many many other apps I played before. Thank you!
Best Sudoko app
Who's On First? on 3/21/2018
Tried several apps. This one is most user friendly! Has time on/off, pencil toggle on/off, various levels and I even used hint once it was very helpful. As easy or as difficult as you desire.
If you like ads...
Carmine Lucabratsi on 3/20/2018
Don’t pay a cent for this unless you like lots of ads. It’s a fun game when you’re not bombarded with ads for other games.
A classic
Chicagolawgrrl on 3/19/2018
Free, basic functionality, won’t kill your battery
Heart Happy Jim on 3/19/2018
To many adds it’s a pain
Add A lot of the Time don’t show the X icon
railerswim on 3/15/2018
On iPhone X it’s impossible for me to get out if some of the ads. I’m fine with ads, but if I can get out of them then screw this.
Love it
Everest1220 on 3/7/2018
So - I really enjoy Sudoku. The branium version is awesome. Best I've used. The only issue I can think of- and I've had to work to think of a problem - is that, while it gives me what my ranking is (49k for Breezy) I don't know how many people play this version overall so, I could be in last place or in the top 10% - no way of knowing. Truly, though, that's a SMALL issue. Great job people!
Best sudoku app I’ve ever seen, with a tiny quibble
Nivella on 3/6/2018
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.
Great game , challenging.
Laufacts on 3/6/2018
Great game, challenging
Game not for me
MagnoliaWildpuff on 3/4/2018
Obviously different people are wired differently. The “easy” games are really hard for me.
Great app but ads are cumbersome
GeauxDoc on 3/3/2018
One of the better sudoku apps but the ads are very annoying. Many multi page ads that distract from enjoyment of this app.
First Time
Henry Goldman on 3/3/2018
It’s my first time playing sudoku and this is amazing 😉
Great game
VickieFaye on 3/2/2018
Great game.
CadenceMatah on 2/28/2018
Our world is overrun with commercials and ads. They are on apps, tv, radio, and YouTube. Life is short and these constant interruptions of people begging for money is becoming increasingly stressful. Can’t develop apply some restraint to these commercials and ads and give the world some relief.
lyn in hotlanta on 2/28/2018
I’m a newbie to sudoku and this app helped me teach myself! Very comprehensive with lots of options for looking fo the correct move including the option to get a hint in order to move forward.
Add a Comment