Yes, 英语单词卡-儿童英语 is free to download, however it contains in-app purchases or subscription offerings.
Not enough reviews to make a reliable assessment. The app needs more user feedback.
英语单词卡-儿童英语 has several in-app purchases/subscriptions, the average in-app price is 279.00 ₽.
To get estimated revenue of 英语单词卡-儿童英语 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.