How to check In App Purchase Auto Renewable Subscription is valid

Question

I\'m looking to implement the new Auto Renewable subscriptions using In App purchase but I am unsure how or when to check if the user is currently subscribed. My understandi

Answer 1

Better to validate a receipt locally before making any calls to the Apple API. Every time the app runs it's a good practice to validate the local receipt and if you need to check whether user has any active subscriptions, you can retrieve all purchases from the local receipt and see if there is a purchase which is still active.

I have implemented a small library written in Swift to simplify to work with In-App Receipt locally. You can easily fetch the object that represents the receipt (InAppReceipt) and retrieve an active purchase/all purchases.

Feel free to use. Github link

Here is an example of solving your problem:

import TPInAppReceipt

do {
    let receipt = try InAppReceiptManager.shared.receipt()
    
    //retrive active auto renewable subscription for a specific product and date
    let purchase = receipt.activeAutoRenewableSubscriptionPurchases(ofProductIdentifier: "ProductName", forDate: Date())
    
    //retrive all auto renewable subscription purchases for a specific product
    let allAutoRenewableSubscriptionPurchases = receipt.purchases(ofProductIdentifier: "productName").filter({ return $0.isRenewableSubscription })
} catch {
    print(error)
}