Yes, TOEIC®L&R Part5 10分で9割 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.
TOEIC®L&R Part5 10分で9割 is free.
To get estimated revenue of TOEIC®L&R Part5 10分で9割 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.