How to code and test custom offer code redemption in Swift and Xcode
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A step by step guide on implementing and testing code that enables customers to redeem custom offer codes for Auto-Renewable Subscriptions in an App.
The guide was made using our Free iOS StoreKit 2 Open Source project which is recommended for developers or business folk wishing to learn about how In-App Purchases or Subscriptions work and the code behind them.
The following walkthrough assumes that you have already setup StoreKit with an offering, have developed a UI that allows an app to display and buy products and have a custom offer code available to be used with an Auto-Renewable subscription.
Please consult the guides below to learn how to setup StoreKit, create a StoreKit offering, create custom offer codes, design a UI that considers all StoreKit scenarios or make StoreKit product purchases.
Step One: Implement the Utility
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In XCode, create a new file and paste in the code below.
We recommend that you place it under Utils/StoreKit.
Step Two: Implement the code
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In your app, wherever you wish to allow users to redeem custom offer codes, add the code below.
Step Three: Verify
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Run the app and test the functionality. It should pop up a modal similar to the one above.
After a successful purchase, confirm that the Subscription appears in the StoreKit with the offer showing in the Transaction details.
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Looking to learn more about developing apps with StoreKit 2?
Read our comprehensive development guide linked below to learn about all the secrets behind developing In-App Purchases and Subscriptions with StoreKit 2.