Non-renewable in-app purchase with iCloud recovery

I am creating an application in which I have an in-app purchase function. I am using a non-renewable type of subscription, but I must provide support for restoring a subscription on multiple devices.

After going through several documents, I found out that iCloud was the best way to implement it and provide subscribed content for multiple user devices. Finally, I decided that the following project would be implemented:

• User explores the application.
• Click on the in-app purchase button

• Check iCloud Availability

  • ICloud Available:

    • Continue the purchase as usual.

  • iCloud is not available:

    • Show alert: "Sign in to iCloud to access signed content on another device," with the options "OK" and "Continue Anyway"

      • Click OK:

        • Remains on the same page

      • Click Continue Anyway:

        • Purchase in progress
        • If iCloud is already purchased and available, upgrade to iCloud

• On a successful purchase, we receive a transaction. We will store this receipt in iCloud (one time in iCloud at the time of purchase) using the key value storage, as well as the default for users

• Successful purchase.

• The user starts the application from another device

• Check receipt of a transaction in user defaults. If available, check and act accordingly.

• If the receipt is not available to users by default, check for iCloud

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