So it's a good app. Two things: 1. Sometimes I'll get back on after a really long session and my tree will have died for no reason. When I check the button that tells you, it's just a random app that I hadn't opened that day. Its happened several times and it makes me really sad so please fix this. 2. I can't get the app to let me access any other apps. Sometimes I will use it for homework so I don't get side tracked but I can't open a calculator without sacrificing the life of my tree. I wish you could select apps that would be okay to stay on. Please fix these two things and I will give you 5 stars for sure!!!