Yes, まるばつ 3人対戦 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.
まるばつ 3人対戦 is free.
To get estimated revenue of まるばつ 3人対戦 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.