Yes, 奇趣博士教识字(三年级语文生字拼音上册教辅) 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.
奇趣博士教识字(三年级语文生字拼音上册教辅) is free.
To get estimated revenue of 奇趣博士教识字(三年级语文生字拼音上册教辅) app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.