Yes, 読むとくメソッド®ことばの学校 読むとくアプリ 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.
読むとくメソッド®ことばの学校 読むとくアプリ is free.
To get estimated revenue of 読むとくメソッド®ことばの学校 読むとくアプリ app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.