Yes, 二年级数学 萌萌打地鼠 趣味学数学 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.
二年级数学 萌萌打地鼠 趣味学数学 is free.
To get estimated revenue of 二年级数学 萌萌打地鼠 趣味学数学 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.