As with introductory offerings for new subscribers, there are three categories of promotional offers for previous subscribers:
Customers have free access to their subscription for a limited period of time – for example, a 30-day trial subscribes to one normal renewal price of $ 4.99 a month.
Pay as you go
Customers pay a promotional price for each billing period for a period of time ̵1; for example, $ 1.99 per month for three months for a subscription with a standard renewal price of $ 9.99 per month.
Pay Up Front
Customers pay a one-time promotional price for a specified period – for example, $ 9.99 for the first six months of a subscription with a normal renewal price of $ 39.99 per year.
Developers can offer up to 10 different actions simultaneously to test the waters.
The special offers will also be available to existing subscribers, allowing developers to both retain and recover subscribers. A customer who has not yet subscribed to an app will not have access to the promotions, but may receive an introductory offer if the developer offers one.
Receipt acknowledgment allows developers to identify subscribers who have opted out of auto-renewal so they can quickly trade in an offer to reclaim them before their current subscription term expires.
At the end of the promotional period, the subscription will automatically be renewed at the standard price according to Apple.
Promotional offers for previous and existing subscribers will be available in iOS 12.2, macOS Mojave 10.14.4 and tvOS 12.2 and higher. Developers can now prepare for it by creating offerings in App Store Connect, downloading Xcode 10.2 Beta, and implementing the new StoreKit APIs in their apps.
Apple has announced this change for the first time in the beta release notes for iOS 12.2. For more information, visit the Apple Developer Web site.