高中历史课本串讲 is not free (it costs 1990.00), however it doesn't contain in-app purchases or subscriptions.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
The price of 高中历史课本串讲 is 1990.00.
To get estimated revenue of 高中历史课本串讲 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.