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help, the optional smart notes feature automatically deletes values from notes you have entered manually when they are no longer valid.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 1.60

• Minor bug fixes

Ratings and Reviews

4.5 out of 5
373 Ratings

373 Ratings

Nythauk ,

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.

Mrbigmoneygrip ,


Very nice program. Easy to do hardest levels.
I've almost finished all of the insane. I like how you can put numbers to be used in the box. When I do suduko on paper, it's a mess.
One issue for me is when you accidentally put wrong number, you automatically get an error deduction. It would be nice to take back a move.

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..


Optime Software LLC
72.2 MB

Requires iOS 7.0 or later. Compatible with iPad.



Age Rating
In-App Purchases
  1. Puzzle Pack - Showa $0.99
  2. Puzzle Pack - Boshin $0.99
  3. Puzzle Pack - Nanboku $0.99


  • Family Sharing

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

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