I have this app on my kindle and my phone, but the problem is if you do use it on mobile it is a little more of a hassle than having it on a big screen device. Such as iPad,iPad mini, Kindle (ect) . [Not promoting kindle btw XP] The app is overall great, but if you are going to get this app on mobile. I suggest not to, only because its not as easy to use. Try this app on a bigger screened device is all Im saying. The app is amazing, especially for being free.