Yes, Ghi điểm bài tiến lên 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.
Ghi điểm bài tiến lên is free.
To get estimated revenue of Ghi điểm bài tiến lên app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.