How do I download astroscope

Are you talking about this app?

FYI:

It is a free with Offers In-App Purchases.

Astroscope offers an auto-renewing, monthly subscription for $9.99, with a free 3-day trial period and an annual subscription for $59.99.

Payment will be charged to your Apple ID account at the confirmation of purchase. Subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the current period. You can manage and cancel your subscriptions by going to your account settings on the App Store after purchase.