Passing Referral Codes in iOS App Installs

The use case that I want to implement is as follows: user A has the app, user B doesn't have the app yet. User A wants to referral user B to get points. User B scans the QR code present in user A's app. User B gets redirected to the App Store and when downloads the app, the code will be automatically present in the sign up request (so the referral code will be cashed during first launch of the app). In Android it was implemented using Google Play Install Referrer. Based on my research, in Apple apparently there isn't an alternative, can you please confirm me this.

Passing Referral Codes in iOS App Installs
 
 
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