Just Sudoku is exactly what the name suggests: simply a sudoku game, where the game itself is the center of focus. Just Sudoku's interface is straight forward and simple in the right spots. This way you won't be overwhelmed by visual effects, but instead can concentrate on the numbers.

Are you a sudoku veteran? Can you solve even the toughest puzzles by simply glancing at them? Try our jigsaw sudoku puzzles! Different boxes force your head to concentrate in a different manner. In addition jigsaw sudoku puzzles also add a splash of color in your everyday gaming.

No matter if you just discovered the pleasure of sudoku or if you are a true professional when it comes to combining numbers, Just Sudoku is the ideal app to follow your number passion. Just Sudoku is like a fitness studio for your brain. Your fitness coach with the matching workouts to train your logic throughout the day or to stay mentally fit and agile with age.

Did you just get started in the world of sudoku? Just Sudoku will help you get a good foothold: marking errors, giving hints, add pencil markings and much more.
Choose from 4 difficulties - an easy level for a quick training now and then or a more difficult level for a true brain-teaser.

Important features in a quick list:
- classic and jigsaw sudoku variants
- 4 difficulty settings
- night mode, so that your eyes don't get strained at night or so that your partner can continue to sleep
- many different help functions, each individually selectable
- make the interface your own, with a large selection of fonts and font-sizes
- no matter if you play on iPhone or iPad, portrait and landscape modes are supported

Just Sudoku is free and ad-supported. If you choose to purchase Just Sudoku Premium to remove ads, payment will be charged to your iTunes account, and your account will be charged for renewal 24 hours prior to the end of the current period. Auto-renewal may be turned off at any time by going to your settings in the iTunes Store after purchase. Current price for the yearly subscription is $9.99 USD, and may vary from country to country.

Just Sudoku's privacy policy:

What’s New

Version 2019.13

bug fixes and UI improvements

Ratings and Reviews

4.6 out of 5
1.3K Ratings

1.3K Ratings

Dolau Fan Kid ,


The method of putting numeric place holders is very frustrating. Holding down the number to enter a numerical place holder on many occasions was difficult to achieve, for some reason it entered a number which maybe wrong or right making it feel like cheating if right and annoying if wrong. Otherwise a great game as you have two choices of layout for the game.

I think a second key press is neededto enter a place holder

Developer Response ,

Hi, just wanted to keep you up to date. In the new version (4.0.4) there is a pencil markings button. This should solve your problem. :) Please check the AppStore for an update. //// Original Response from August 2017: Hi there, thanks for the feedback. I am currently looking into multiple possibilities to make pencil marking better. There should be an update in the fall, that will address this. If you would like to be a beta tester for the new features, just send me a mail to Thanks

Cynebobbles ,

Fantastic brain wake up

I make sure I do at least one sudoku every day. I set the settings to meet my needs, no cheating allowed, no help and away I go. I am 68 and my kids keep telling me I’m forgetting things so, doing a free great sudoku every day, some times more, I know I’m a long way off not knowing what I’m doing.

oldfort ,

keeps me sharp

I enjoy my soduko, as a retired person of 72 I like to keep my brain active as other parts of me cease to work properly and bits fall off now and again. I enjoy the challenges.


Keitgen GmbH
46.2 MB

Requires iOS 9.3 or later. Compatible with iPhone, iPad and iPod touch.


English, Danish, Dutch, Finnish, French, German, Italian, Japanese, Korean, Norwegian Bokmål, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Swedish

Age Rating
In-App Purchases
  1. Just Sudoku Premium £8.99
  2. Just Sudoku Premium £0.79


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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