***** JUNE UPDATE *****
5 new puzzles, 75 total puzzles!


Presented by Cracking The Cryptic, YouTube's most popular Sudoku channel, this is the brand new “Classic Sudoku” game that their viewers have been requesting for the last two years!

Simon Anthony and Mark Goodliffe, the hosts of Cracking The Cryptic, have assembled a most extraordinary collection of sudoku puzzles. The sudokus in the game cover a wide range of difficulty with something for everyone - and also require an incredible range of techniques to solve them efficiently! Each of these special puzzles had to qualify for inclusion in the game by passing our rigorous play-testing - a test that NO other sudoku game on the market would pass. This play-testing ensures that a human being has actually thought about the journey you, the solver, will go on as you work through the puzzle. No computer testing here!

Indeed our more advanced puzzles have been carefully designed to showcase some of the diabolical techniques in an intuitive way with the aim of helping solvers UNDERSTAND the patterns involved.

In Cracking The Cryptic’s games, players start with zero stars and earn stars by solving puzzles. The more puzzles you solve, the more stars you earn and the more puzzles you get to play. Only the most dedicated (and cleverest) sudoku players will finish all the puzzles!

Featured authors include (obviously) Simon and Mark but also some other authors who have produced popular puzzles on the channel!

Mark and Simon have both represented the UK many times in the World Sudoku Championship and you can find more of their puzzles (and lots of others) on the internet’s biggest sudoku channel, Cracking The Cryptic.

40 beautiful puzzles on launch
5 new levels every month for the first year (a total of 100 levels!)
Hints written by Mark and Simon!

What’s New

Version 1.08

5 new puzzles!

Ratings and Reviews

4.8 out of 5
139 Ratings

139 Ratings

Pyromonkey83 ,

The Best Sudoku App on the App Store. Period.

Simon and Mark have done it again, and this time have brought even more to the party than with their sandwich sudoku app (which still receives excellent updates each and every month as promised). The dual notes capability (which can be turned on in the options) gives a comprehensive capability to pencil marks and notation that far surpass any other app. Each of the 5 early puzzles I've completed have all felt unique and challenging, without being absolute gimmes. The guest puzzles from the master of Thomas Snyder are beautifully designed and very enjoyable to solve as well.

Unlike other sudoku apps that generate random puzzles with an algorithm, these puzzles are clearly handcrafted with care, each giving a certain amount of designed logic that cannot be found with computer made sudoku. For those who love handcrafted puzzles from Nikoli or GMPuzzles, this is the app for you.

While no advanced logic has been required as of yet, I fully expect the difficulty to ramp up significantly as they have done in the sandwich app, and I can't wait to see those puzzles!

Mysteries4aLiving ,

UPDATE: Love this app even more

Updated review: I have completed level 26 with 98 stars and I'm even more impressed with this app. The puzzles are all beautifully designed and some are absolutely exquisite. I am learning so much and can see that these will have replay value.
I do have one request: I have fat fingers and sometimes accidentally touch a known value next to the cell I intended to choose. It would be great if known cells could be locked once the values has been inserted.
Kudos to the team who created this app!

Initial review: I’ve been watching Simon’s videos for about a month and was so excited to hear this app was coming. I still have to remember to use the back arrow when I’ve made a mistake so I don’t erase my previous pencil marks, but other than that this app is all I hoped for and more. I’ve completed only five of the puzzles so far and I already feel I’ve learned so much. Thank you for this fun and challenging game and learning tool!

Riikkanen ,

Excellent - just missing one thing

I really like the app. I am about halfway through and there are certain puzzles that I have had to skip and keep coming back to (such as 4 and 11) because I haven’t figured them out yet. The notations are simple to put it and work well. The only feature I miss from my previous sudoku app is that when I’ve filled in all the number ones, the round button for #1 could show that to me by e.g. fading a bit. That way it’d be easier to keep track which numbers remain.


Nick Carney
63.5 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

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

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