Yes, 分屏:双视图窗口 is free to download, however it contains in-app purchases or subscription offerings.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
分屏:双视图窗口 has several in-app purchases/subscriptions, the average in-app price is $290.00.
To get estimated revenue of 分屏:双视图窗口 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.