I was a bit confused at the reviews until I did some digging and found out the game used to be a lot worse! Now there's an "auto-grind", various other QoL, and even cloud saving!

Still perhaps a ways to go, but the dev seems to be taking feedback pretty well.

Oh, if you don't want to "register", there'll be a "guest" mode coming soon as the dev realized not everyone will want to provide an email (which is only used as a "second password" for resetting your password to prove you own the account)