iPhone Screenshots


Top 100 free app for over a year.
Rated "Best Sudoku Game of the Year" by Apple.
Rated #9 Game of the Year by Apple.
Rated #24 App of the Year by Apple with over 10,000 apps competing!

With unique handcrafted puzzles across four different skill levels, Sudoku (Free) is a great introduction to the fun and puzzle solving challenge of Sudoku.


All options are on by default, but you can turn them off in the Options menu
• Show Incorrect :: Shows incorrect answers in red.
• Smart Buttons :: Disables the number button when that number is completed on the game board.
• Smart Notes :: Removes the number from the notes in the box, column, and row that contains the cell with your correct answer.


• Multiple color schemes
• Unique handcrafted puzzles
• Four different skill levels
• Challenge a friend
• ALL puzzles are solvable WITHOUT guessing
• 4 color schemes
• "ALL notes": tap the "All notes" button on to show all the possible answers for each square. Tap the "All notes" button off to remove the notes.
• Hints: shows the answer for the selected square or a random square when one is not selected
• Pause the game at any time and resume where you left off
• Best times, progress statistics, and much more

Do you want more? Try one of our other versions of sudoku which have all the same great features!
* Look for our paid edition of Sudoku with 800 puzzles and more unique color schemes.
* Or try Color Sudoku for a fun twist to solving sudoku puzzles.
* For advanced puzzle solving, try Expert Sudoku to challenge your sudoku solving skills.

What’s New

Version 2.0

Bug fixes and performance improvements.

Ratings and Reviews

4.4 out of 5
272 Ratings
272 Ratings
mjp179 ,

Best free Soduko App I've found

Four levels of difficulty, but only a limited number of puzzles.

Some nice feature options: choice of color schemes, correct/incorrect indicator, and 'notes' which puts small numbers (for possibilities) on a 3x3 grid in each box which are then erased as each possibility is eliminated.

Would like an 'automated entry' feature which would automatically enter the last remaining possibility in a box. What I mean is that 'notes', the possibilities you entered in each box, are reduced as they are eliminated by other boxes being solved, but when only one possibility remains you must manually enter it as your solution for that box. I want the option for the final possibility to enter itself, so that they would 'fly', reducing the tedium of the 'hunt and peck' of doing them one by one - after all you already went through that making the 'notes'.

AngWood226 ,

Still love

I've had this game for years. For a while I thought the expert boards were getting too easy but then I realized I hadn't done an update in quite a while. Now they're much harder and I'm in love with it all over again!

e_wolff ,

The simplest and the best.

I’ve been playing this Sudoku game for years now. I love the fact that you can mark the squares with possible solutions while you’re figuring out which number actually belongs in that square. This is the best Sudoku game I’ve played.


Red Key Software Corporation
21.6 MB

Requires iOS 8.0 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, Traditional Chinese

Age Rating
Rated 4+
© 2008-2017 Mighty Mighty Good Games


  • Family Sharing

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

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