The gameplay is simple, which can be absolutely fine. Games don't have to have a bunch of complex mechanics to be fun, but even still I'm not getting much from this game. I don't know if it's just my own idiocy but I've no idea what some of these buttons and features are for and what I do understand isn't very fun. I personally am not getting much enjoyment from just feeding and cleaning the pet while playing noughts and crosses in between. As a kind of pet/care-taking game, I feel like it needs to feel more endearing to the player. I think what this is missing is actual interaction with the pet thing and a little bit of explanation of what's going on in the game. Like, what's up with those coin things? What does the second button on the top row do?
Also not that important but I personally find the high pitch sfx grating on my ears. I recommend a less piercing sound.