Was an amazing app to use and even better tool to learn off.... But as soon as you fail 5 times you need to wait hours for your "lives" to fill back up or you can pay there monthly fee in the form of a subscription to keep playing Also alot of the content is stuck behind that sub wall which makes it impossible to do the full lesson properly Amazing app I recommend it if you can afford the subscription if you can't like myself then I'm sorry but this app isn't for you