iPhone Screenshots


Take a journey to feudal Japan with Sudoku Free! With beautiful graphics and killer features, Sudoku Free! is the best Sudoku app available for iOS.


Two separate keypads, one for entries and one for notes, allow you to enter values quickly and easily. No more tedious switching between entry mode and note mode to complete your puzzle.


The optional auto-notes feature enters all of the notes into the puzzle for you and keeps them updated as you solve. If you don't want that much help, the optional smart notes feature automatically deletes values from notes you have entered manually when they are no longer valid.


The optional error checker tells you when you have entered an incorrect or illogical value, allowing you to catch errors early and preventing needless frustration.


Five difficulty levels, from easy to insane, ensure that you will be able to find a puzzle that matches your skill level. With 3,000 total puzzles, you won't run out of puzzles any time soon.

Download Sudoku Free! for free today and start playing Sudoku the way it was meant to be played!

What's New

Version 1.60

• New More Games screen
• Minor bug fixes

Ratings and Reviews

4.2 out of 5

349 Ratings

349 Ratings

Sudoku game


This game is a nice challenge, and yet simple enough to share and teach my eight year old. It features the ability to note and eliminate possible solutions in each square. I like that I am able to turn off the sounds and enjoy the game silently, and also to challenge my own best time. However, only the first 100 boards are free. They give you three levels of difficulty on the free boards, and they are satisfyingly challenging; but there are two higher difficulty levels on the paid boards that I’m not going to pay to get. Also, ads seemed to suddenly get much worse after the last iPhone update, including one that keeps interrupting my game and superimposing itself repeatedly over my board. I can’t figure out if this app is the issue, or the update, but I suspect it’s the update.

Sudoku, by far, one enjoyable, challenging games to play!!


I absolutely love this game and THIS version. I was hooked the first puzzle I ever played! It took awhile too get the hang of it but once I did, I couldn't stop! You have to be precise with every number you place in a box or else your whole game puzzle is thrown off!! So exciting! You can start off with easy games and progress to extremely difficult ones. Once you play 100 games you can easily purchase the next set of 100 for only .99 cents. What a deal. You've got to at least TRY this game...you'll love it too!!! Enjoy.


Sylviana Morrigan

One of the more difficult ones to play on. Let me write my own notes but automatically delete a number from the column/row/9x9 section when I make the number so. I don't see why the only option is to either write all your notes for you or do nothing at all. Taking out the number is just tedious, not hard or anything. I've found that little bit of assist really nice in sudoku apps. Too bad this one doesn't have it.

And now with some update you can’t even choose your difficulty level. Look, I’ve been playing Sudoku since I was in grade school; I do not need to start on easy and work my way up to expert thank you very bloody much.

Trash app.


Optime Software LLC
46.3 MB
Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© 2017 Optime Software LLC
In-App Purchases
  1. Puzzle Pack - Genpei $0.99
  2. Puzzle Pack - Norada $0.99
  3. Puzzle Pack - Meiji $0.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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