Hi!
I'm making an app that will contain a free and a premium version.
I would like to offer the premium features as a courtesy to certain people, however, the google playstore does not allow to enter people who will be able to download the premium version of without paying. I then thought about the possibility of the application verifying the account used in the google playstore and releasing or not premium features according to it.
My question: How to get the default email from the google play store? I saw some posts about getting accounts from the device, but without the possibility of identifying the one used for the download.
If that's not possible, does anyone have any suggestions?
Thanks