Migrate all users of my paid app to in-app purchase

Question

In fact, I have 2 applications: free and paid (pro version). I would like to transfer my 2 apps to a free in-app shopping app.

Can I save all the people how I paid the pro version in my in-app purchases? What is the best way to do this?

Answer 1

This needs to be processed logically. 1) Just launch the App App App for everyone.
2) Put a simple check to see if the user has already paid for the pro version (must be saved somewhere on your server side)
If so, let him get the benefits of purchasing
Else applications. They will be shown in the options for purchasing the application.

Answer 2

, pro-, " " pro- , , "pro app" . . . , PRO .

EDIT: . SD Maid - .

google play: https://play.google.com/store/apps/details?id=eu.thedarken.sdm&hl=nl

Answer 3

2 : ( ). 2 .

, --? ?

:

1) Pro Pro, Pro, .

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2) Pro Version, .