Yes, SPI3 言語能力 問題集 解説付き 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.
SPI3 言語能力 問題集 解説付き is free.
To get estimated revenue of SPI3 言語能力 問題集 解説付き app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.