Using SwiftyStoreKit to verify if user has purchased a previous version of app

[tomshanks]

Hi guys,

I've got a paid app that I want to make free with in-app purchases. I don't want my users that have already purchased my app to pay for the in app purchase. I had a quick look over your code and I feel I can use it to check the user's receipt to determine if they purchased the app before I changed it from paid to free. I just wondered what you guys thought about this implementation? I'm thinking retrieve the user's receipt then check their original purchase date and original purchased version then lock or unlock all features dependant on the result.

[bizz84]

Interesting question. While I have not tested this, I guess that if the receipt contains the original purchase date you could check it against the date of your price change and unlock the content accordingly. This logic seems a bit brittle though as if you then decide to make the app paid again, you no longer have only one date to compare against. Your call.

[bizz84]

Strictly, I feel that this is not an issue with SwiftyStoreKit itself.

Closing this due to inactivity.