Not usefull
Don’t spend your time here. It will not work.
Yes, Calley 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.
Calley has several in-app purchases/subscriptions, the average in-app price is USD 34.99.
To get estimated revenue of Calley app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.
Don’t spend your time here. It will not work.