> A few months ago I stopped selling my Mac applications (PopDo and FreelanceStation)

I looked at these. On PopDo, you mistake two completely different macOS versions (your site says "Works on macOS 14 Sequoia" and of course, Sequoia is 15 not 14). This alone would have me closing the tab on a developer's site.

So I thought, well let me check the FreelanceStation page and the latest release says "Works on Ventura" (which is from 2022).

> I never made any real money out of my apps that would make me consider staying.

I think the two immediate details I noticed on your product pages might be a good indicator of why these things didn't make money. The types of users who pay for Mac apps have an eye for detail and usually run recent macOS releases.

I wouldn't have considered downloading software from a small developer with major errors on the system requirements, or a version from 3 years ago being listed as "Works with..."

Lisp is awesome, but not everything is SwiftUI's fault here. Marketing is an incredible undertaking and starts with attention to detail, especially in the Mac market.