My go-to app

I truly love this game. Thank you for your effort and for adding new puzzles.
My only suggestion is: can you add a message "are you sure you want to use a hint?" I dont use hints at all but sometimes tap the hint button when trying to undo. Or put the hint in a different spot altogether. Other than that, its perfect!!

Tenoca about Nonograms CrossMe, v2.2.98