Yes, 李阳疯狂英语900句 is completely free and it doesn't have any in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
李阳疯狂英语900句 is free.
To get estimated revenue of 李阳疯狂英语900句 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.