问题
I've had in-app purchase feature with non-consumable pricing in Apple Store. And the app has pricing to use it.
How to change non-consumable to auto-renewable subscriptions? Somehow keep user who purchased the app. And new user charge with auto-renewable subscriptions.
回答1:
No you can't change it, just make sure in your App, you use
[[SKPaymentQueue defaultQueue]restoreCompletedTransactions];
Restore old purchase and check if you find that the user has purchased the non-consumable product (old users), restore the product for free. If user has not purchased that product before (new users), ask them to purchase the new auto-renewable subscriptions.
来源：https://stackoverflow.com/questions/47028722/how-to-change-non-consumable-to-auto-renewable-subscriptions-and-keep-old-user