Why isn't Sims Mobile on Amazon?

I played Sims free play on my kindle but always had issues purchasing premium items. I'd get charged but never get the items. I had to keep a synced version on my android phone so I could make purchases there and have them on my kindle. Kindle is android but usually doesn't play nice with non Kindle centric apps. I'm fairly sure that they don't use kindled for testing as their testers would have found those problems. I'd love to play this on my kindle tablet, big screen ftw! This is a fairly new game, hopefully as their profits increase we'll be able to play on more than just phones.