iOS In App Purchases

1. In App 기능 활성화(https://developer.apple.com/account)

2. 상품 구성(https://appstoreconnect.apple.com)

3. Code 구성

• Sample Code: https://developer.apple.com/documentation/storekit/in-app_purchase/offering_completing_and_restoring_in-app_purchases

refer

• doc: https://developer.apple.com/documentation/storekit/in-app_purchase
• tutorial: https://medium.com/@bestiosdevelope/implement-in-app-purchase-iap-in-ios-applications-swift-4d1649509599