How to handle the transition of an existing paid for app to free version with in app purchase

Solar2D Monetization (in-app purchases, ads, etc.)
#1

Hi Guys!!!

We’re thinking to switch our paid version of our game, to a free version with In App Purchase in order to unlock all the levels of the game.

Nevertheless, we already have a several users that paid $0.99 for our app and we want to, when they upgrade to the new free version also get the unlocked levels (because they already paid).

Is there a way to do it? How can I identify users that bought the paid version of my game?.

Thanks in advance.

Jose Silva. [import]uid: 84893 topic_id: 27100 reply_id: 327100[/import]

#2

You need a token file to record whether this is the IAP version or not.
Lets call it IAP.TXT
When the free app launches, it checks for a saved game file.
If there is one, and there is no IAP.TXT file, save an IAP.TXT file holding the value Y
If there is not a saved game file, save an IAP.TXT containing N

Now, when the free version runs, the user gets all levels IF
there is an IAP.TXT file holding Y
or
Proper In App purchase checking.
[import]uid: 108660 topic_id: 27100 reply_id: 110015[/import]

#3

So, all that said, what option seems most appealing if you were in my shoes? The IPad is exactly one year old and other than the screen, is in …

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[import]uid: 159581 topic_id: 27100 reply_id: 113168[/import]