Yes, 小4漢字ドリル 基礎からマスター! 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.
小4漢字ドリル 基礎からマスター! is free.
To get estimated revenue of 小4漢字ドリル 基礎からマスター! app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.