Yes, D&L Matching 3 In 1 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.
D&L Matching 3 In 1 is free.
To get estimated revenue of D&L Matching 3 In 1 app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.