Nice Sudoku app (with one small flaw)
While the app comes with “only” 100 Sudokus, all of them are very well made. Even the easy ones take a few minutes to solve and the hard ones may even keep you busy for an hour or more. I found the puzzles to be challenging but fair. My only complaint is, that with the latest app version running on iOS 17.2 the time tracking seems to be somewhat broken, sometimes adding hours to the recorded solve time. When locking the phone while a puzzle is open, chances are, that a few extra minutes will be added to the timer _after_ unlocking the phone (you can see the timer change in one big step). The difference is also much bigger than the time the phone was locked and can quickly add tens or hundreds of hours within a a few minutes. It seems to be somewhat dependent on the pre-lock value and not really linked to the lock time; the bigger the time the more time gets added. The highest change I observed was 980 added hours within a 5 second screen lock. Which is also why the app tells me, that it took me just over 40000 hours (4.5 years) to solve level #100, which was released less than two years ago…
Show more
Timer glitch
On iPhone, whenever playing a level on the screen if I bring down my notifications sliding down from the notch and then back up to return to the game, a 44 seconds gets added to the clock on the level; 100% of the time, same 44 seconds extra. Other than that great game.
Awful controls
The controls are so bad as to make it almost unplayable. Why not use the same number pad as Cracking the Crypto? If you fix this, i’ll change my rating to five stars.
Brilliant
Rich in customizable features and lovely, handcrafted puzzles :) Thanks for your efforts in creating these lovely apps, and the YouTube channel.
Bug: Timing Error
Great app, but sometimes when exiting and re-entering the app while solving the puzzle, the timer jumps, sometimes hundred of minutes at a time. I didn’t have this error on the Classic or Chess sudoku app.



