This game is absolutely adorable! Relaxing in it's simplicity. ฅ^•ﻌ•^ฅ
The only reason I do not give it five stars is because of how long it makes you wait for supplies and the like to be delivered. 
Their special cats don't seem to be able to be added to your main house which makes me a little sad. Speaking of the main house and cats, it doesn't seem like you can mix your cats between floors either but I hope that is a coming feature.

It is also my very first APK download.
That being said and I'm not quite sure if I'm asking in the right place, but where do you look to see if there's a modification to the game? Because from the research that I did I was under the impression that in an APK file had modifications in it?  (・–・;)ゞ