Cool, cool, cool. I donated a few bucks to support you. I wish for some more chill music though. Also in the 5x5 puzzles the huge buttons guide to the right seems pointless and distracting as UX goes.
Thanks for the support!
The 5x5 screen with the buttons on the right was inspired by Mario’s Picross, which had a similar layout. The 5x5 levels are basically a tutorial and I don’t expect players to spend that much time on them in total, so I imagine it’s fine? I think it’s useful for beginners, and also teaches that Select can be used for “maybe” (this would otherwise be hidden in some menu which most players might never see).