Question

I m having in-app purchase subscriptions in my app. I m able to integrate and make subscriptions successfully. There are 3 different subscriptions, monthly, quarter and yearly. So if user subscribes to monthly user can use that feature for 30 days. There s no server in my case. Only availability of some features will be activated/deactivated according to subscription.
When ever the app starts, i want to check whether user paid for subscription or not. If I m maintaining some bool value in subscriptions, what if the user has deactivated the subscriptions from settings? How can I detect whether the subscriptions are valid or not?

Answer 1

You have to post the receipt back to apple server and from the response we receive, we can identify the expiry date. Then I ll know whether the subscription is expired or renewed etc. Visit Apple documentation

Answer 2

你可以在一个必须从你处看到的数据库中增加反面价值。每当用户试图查阅订阅时,都可以从数据库中核实。

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