To create App Promo Codes for a paid iOS app in App Store connect:

Navigate to your Apps in App Store Connect:

Select the app you wish to create promo codes for, then:

1. Click on the “Service” tab
2. Select “Promo Codes” from the left menu
3. Enter the number of codes you would like to create
4. Click Generate Codes
5. Check the box
6. Click Generate Codes

Once done, the page will tell you:

You can view or download your promo codes in text file format from the History tab.

Click Ok and a History tab will appear, from where you can view the codes.

Happy marketing!