But I do have some suggestions; - In the paid version you can practically endlessly retry, it would be nice to have an option to disable that, or at least that it keeps track of how many mistakes you really made. Same for hints. - An option to disable immediate checking, so you actually can get stuck. - Have a dark version of the launch screen when dark mode is enabled; I'm losing vision every time I launch the app in the dark. Also, once a number is filled correctly, and i accidentally tap that space again when filling another number, it counts as a mistake, which doesn't make sense, because it was already confirmed to be correct.