Yes, SortPuz 3d 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.
SortPuz 3d has several in-app purchases/subscriptions, the average in-app price is $2.99.
To get estimated revenue of SortPuz 3d app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.