Well if I have to criticize about something would be the music probably. Is a high pitched sound (not sure if it's the right words to discribe). But a more calm music would make the game more relaxing and chill I think
Yhea, the charge grid sound. The rest the game is very nice and I don't see any problem. I'm not sure if the game have a limit of levels but if it don't I would recommended to put on PlayStore. I would download it for sure!