How do you set a designated app icon for TestFlight builds?

I currently have multiple macOS app icons configured in my project:

  • AppIcon.icon
  • AppIcon-Development.icon
  • AppIcon-Beta.icon

In Xcode, I can assign different app icons for Debug and Release configurations, which works well for local development and production builds.

However, I cannot find any equivalent way to specify a dedicated app icon for TestFlight distributions. I would like TestFlight builds to automatically use AppIcon-Beta.icon.

Where is this configured, or what is the recommended approach?

Is there a specific build setting, archive configuration or App Store Connect mechanism for this, or do I need to handle it manually using build configurations or schemes?

Thanks.

How do you set a designated app icon for TestFlight builds?
 
 
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