Not Sure
I would write a review if I would ever be sent the 6 digit code to complete registration.
Yes, AstroStar 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.
AstroStar is free.
To get estimated revenue of AstroStar app and other AppStore insights you can sign up to AppTail Mobile Analytics Platform.
I would write a review if I would ever be sent the 6 digit code to complete registration.