I am trying to integrate this grey box (see photo here) into the app experience to let a user buy another app within my app. I do not want how to make "in app purchases" i.e. upsell subscriptions. For example, if I have an app A, and I have an add for app B in my app, I want to let the user download app B without ever leaving my app. The facebook app does this.
I am trying to figure out:
(1) what kit does this use to create the grey download box
(2) what is the proper term for this feature, i.e. what do I call to search this functionality
Let me know if this should be moved to a different place or have differnt tags/
