Yes, 充寶寶行動電源租借 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.
充寶寶行動電源租借 is free.
To get estimated revenue of 充寶寶行動電源租借 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.