Yes, 中原按揭 (澳門版) 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.
中原按揭 (澳門版) is free.
To get estimated revenue of 中原按揭 (澳門版) app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.