How to get a StoreKit Subscription period in Swift

Oscar de la Hera Gomez
Three flowers that represent StoreKit, Swift and XCode side by side. Beneath them sits the text “.”

To gather an Auto-Renewable Subscription period, you must combine the value and unit properties from the product subscription period structure.

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.

Step One: Create the cases

A screenshot of Xcode showing the cases for the code provided below.

In your project, create a file called StoreKitSubscriptionPeriod.swift and paste the code below.

We recommend placing this under Models/StoreKit.

Step Two: Implement the Utility

A screenshot of Xcode showing the function that gathers the Subscription period which is available below.

In your project, create a new file and add the code below.

We recommend that you add this to the StoreKitCoordinator in an extension file called StoreKitCoordinator+SubscriptionPeriod.swift.

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.

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