content: Definitely helps me study. Ive bought premium and Ive enjoyed the app a lot. The only criticism I have is that when youre growing a tree stopping the timer early kills it. Often times ill set a timer and then finish early but Ive still got 20 minutes where my phone is completely useless. Yes I could pay the 60 coins to remove the withered trees but that makes my past hour of studying completely useless. You should be able to stop early and keep whatever trees you have managed to grow.