Purchase, subscription within the application, how to carry out?

Question

MySQL

There is an application as a consultation and assistance in which it is necessary to carry out the following:
Purchase of consultation. (package from 2 to 5 consultations)
After the purchase, a new item appears in the menu, inside the menu is a form, after a person fills out the form and sends a message, a message is displayed in the menu that he has 3 more times left.
Can this be done with in-app subscriptions?

Answer 1

JOIN and UNION

Answer 2

Can. Google has all the necessary tools for this: https://developer.android.com/google/play/billing/...