Dont want to let my kids loose on Apple Arcade though. I like to curate exactly what they get to play - educational games with no advertising or bullshit.
My kid's school got him to isntall Numbots which is pretty good. Not sure how it works if you install it direclty rather than getting a login via the school.
Minecraft Education is avaiable on a 'clubs and societies' license to anyone (you dont have to be a school anymore) but they dont publicise that much. Start your own club, install Minecraft Education. You have to set up an Office365 tenant though to manage the logins and subscriptions which is a faff.
Toca Kitchen 2 is a simple paid app where you prepare food and feed it to characters, fun for little ones and really well designed.