Don't like the notifications telling me to play more that I get daily, I purchased a collection of pictures which was also supposed to remove ad's from the game, this never happened, there's also only something like 3 pictures in the bonus category, so I can't get the achievement for completing 5 of them without signing in with a Facebook account, as I don't have one and have no intention of getting one. Finally the achievements aren't linked to your Google play account which is annoying.