All the little guys are adorable, the art is exceptional.
I can see where some people are coming from in terms of lacking overall gameplay, but this game really feels like a Tamagotchi so a little variety on the game to play for earning money may be a plus. With more difficult games yielding more money rewards. Thats not to say the pachinko isn't fun. As a gambling addict myself I enjoy the RNG element of it. However I can see where some people would say that don't feel like they've earned the money.
Only other suggestion would be alternative things to spend money on, as you can spam the pachinko machine. How about some room decor or accessories for the dearies. Adding a money gain cap on the pachinko might be a good way to stretch the gameplay out, as you could have the cap reset each hour perhaps.
Overall you have a fantastic base here to build on with all the pet sim needs. Adding mobile support is a fantastic addition. Time to throw it onto the play store and add in game ads hahaha. Great work :D