How to check In App Purchase Auto Renewable Subscription is valid

Question

I\'m looking to implement the new Auto Renewable subscriptions using In App purchase but I am unsure how or when to check if the user is currently subscribed. My understandi

Answer 1

I am starting a campaign around this issue. Here is my observation and campaign:

Upon auto-renewal, the App Store calls the paymentQueue and posts a transaction. The transaction is posted with transaction.transactionState==SKPaymentTransactionStateRestored.

The issue is that unfortunately this gets posted only to one device. A second device does not get the posting. Therefore, to detect the auto-renewal, or rather to detect the lack of an autorenewal and deny the device a continuing subscription, you have to do a restoreCompletedTransaction or "http post a 64-bit encoded JSON containing the last transaction". If the former, the user needs to give their password; that's intrusive - as you have pointed out above. If the latter, lots of additional coding is required. So, my question is...why doesn't StoreKit have a command:

(does not exist) - [[SKPaymentQueue defaultQueue] restoreAttachedTransactions:(NSArray *)transactions];

This command would flow just like a restoreCompletedTransactions but it would only restore the attached transactions and, most importantly, it would not require log-in by the user. It has the same security protection as the "http post a 64-bit encoded JSON containing the last transaction" and it allows the entire In App Purchase process to be done in StoreKit rather than requiring web posting code.

If this makes sense to you, please suggest how to get this to Apple....thanks.