Sudoku HD‪!‬ 4+

Two keypads for easier entry

Optime Software LLC

Designed for iPad

    • 4.5 • 472 Ratings
    • Free
    • Offers In-App Purchases

iPad Screenshots


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


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help, the optional smart notes feature automatically deletes values from notes you have entered manually when they are no longer valid.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 HD for free today and start playing Sudoku the way it was meant to be played!

What’s New

Version 2.00

• Added support for Autolayout
• Fixed issues with smart buttons and smart notes
• Minor bug fixes

Ratings and Reviews

4.5 out of 5
472 Ratings

472 Ratings

Nitewyng ,

All hail the king!

Optime Software has gone the distance in producing Sudoku HD. I've played 23 others on iPad & PC but deleted all but this one. Why? It is simple: # notation that allows multi-input, auto erase when correct # is placed, color alternative for wrong answers, thousand plus puzzles and the most categories imaginable. All that on top of beautiful graphics even oh my old iPad, no plus either. If you've not tried this game, and you love Sudoko as much as I do, don't wait any longer, just trust me and get it. There will be no buyer's remorse whatsoever. I promise.

Kiwilaurel ,

Best Soduko I Have Tried

I have tried multiple Soduko apps. This is my favorite. I like the system for marking suggestions. I have seen others that work basically the same way but this app has the least cluttered screen so it is easiest to read. I have probably downloaded 5-6 other versions but I always come back to this one.

FenderPBassMan ,

Good - could add a few features

Overall, I think this is a very nice edition of a Sudoku puzzle game. I would like to see 2 specific things added - one, something to show you when all of the number has been used in all nine squares and I would like to see them remove the penalty for mistakes. Most of mine are silly and I don't think it should matter. Or offer an option that elects to highlight mistakes with a penalty or NOT show a mistake and NO penalty..

App Privacy

The developer, Optime Software LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:

  • Identifiers
  • Usage Data

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The following data may be collected but it is not linked to your identity:

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  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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