Yes, 簡単に学ぶチェコ語 単語とフレーズ 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.
簡単に学ぶチェコ語 単語とフレーズ is free.
To get estimated revenue of 簡単に学ぶチェコ語 単語とフレーズ app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.