Very nice, very well done, addictive app – Simply, Sudoku Review

I've had this app for many months now and it is still drawing both me and my son in. Very much like having pencil and paper in front of you, by it has an undo function and an error-marking function if you want to make sure your logic is good. You start with 25 puzzles at each of six levels and have the option to buy more, but it doesn't ever ask you to! You just click 'more' when you run out of a level and choose how many more you'd like. Awesome. Update May, 2017: still using and enjoying this app! Just received notice on iPad that the app needs updating and will no longer be compatible with the next iOS. Please update!! I don't want to lose this app :(
Review by dgcbooth on Simply, Sudoku.