In Apple\'s AppStore Terms & Conditions, you may find the following statement in relation to Auto-renewable In App Purchases:
\"Certain paid In Ap
As of October 2019, follow this :
In iTunes, Select My apps --> features --> In-app purchases
During receipt validation in server side, you can check for is_trial_period to determine if it is in Trial.
https://developer.apple.com/documentation/storekit/in-app_purchase/implementing_introductory_offers_in_your_app