Mac Apps Can Escape From Squircle Jail If They’re Not in the Mac App Store

Tyler Hall:

We all know about macOS Tahoe’s terrible app icons and how 3rd party developers have been confined to squircle jail.

If you’re lucky enough to distribute an app outside the Mac App Store, you can break free of squircle jail using NSDockTilePlugIn. It’s not strictly the intended use-case of that API. And it’s not allowed in the Mac App Store, either. But it can solve the problem.

So today’s release of Iris adds three additional app icons to choose from in the app’s Special Preferences Settings pane. And since they use the NSDockTilePlugIn API, the custom icon remains even when you quit the app.

Iris is far from the only app using this or other techniques to sort-of escape squircle jail. All the apps I’m aware of doing something like this are Mac-assed apps. It’s a good litmus test.

★ Wednesday, 8 July 2026