Yes, WITH Fitness(ウィズフィットネス) 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.
WITH Fitness(ウィズフィットネス) is free.
To get estimated revenue of WITH Fitness(ウィズフィットネス) app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.