Got this when I realized I got most distracted from my work by looking at my phone. Really helps me focus when I need to. I didn't want one of those apps that completely locks down your phone in case I actually needed to use it for something important, but I don't want to kill my trees for unimportant stuff. Also I like that they have a variety of trees that you have to work to get. It makes me more motivated to use the app. I hope they add more season-themed trees (snow covered would be cool!)