Yes, 手机客户资料助手 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.
手机客户资料助手 has several in-app purchases/subscriptions, the average in-app price is 30.70 S/.
To get estimated revenue of 手机客户资料助手 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.