Yes, 탄력밴드 운동 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.
탄력밴드 운동 has several in-app purchases/subscriptions, the average in-app price is 3.44 ₩.
To get estimated revenue of 탄력밴드 운동 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.