Wha?

Was there some attempt by Amethyst to get apptoved on Apple's iOS app store that I'm not aware of, and they were rejected for not meeting their security requirements?

As far as I am aware of, Amethyst was only ever made for Android. No iOS version was ever developed.

The reason probably had nothing to do with Apple's security requirements and everything to do with the fact that it's an entirely different OS architecture that requires a complete rebuild of the app, and not worth it when Apple's draconian rules didn't allow zapping to be available by default.

Heck, we still don't have an Android version of Damus, and that has nothing to do with Google's "security requirements" either. It's just a completely different OS to try and build for.