---
title: productIdentifier
framework: storekit
role: symbol
role_heading: Instance Property
path: storekit/skproduct/productidentifier
---

# productIdentifier

The string that identifies the product to the Apple App Store.

## Declaration

```swift
var productIdentifier: String { get }
```

## Mentioned in

Generating a signature for promotional offers Implementing promotional offers in your app Testing In-App Purchases in Xcode