I liked it a lot when i first started using it. It is great for studying but now I can't get the app to stay open. Sometimes I can't get it to open at all. Iay have to cancel my subscription, I don't want to pay for something that I have to keep installing and reinstalling just to get it to open once only to give me issues again. I tried to use the desk top version but you can't do the solo study thing, you have to join a game.