I have the same experience, to keep up with OS updates alone is a ton of work. I just realized that the text editor I wrote together with friends in University

I have the same experience, to keep up with OS updates alone is a ton of work. I just realized that the text editor I wrote together with friends in University (still usable and open source) Tincta turns 10 this year. Maybe it's time for some serious update with support for the new programming languages that came out, as well as some UI overhaul. With Tincta we also went through some porting pain, like changes to NSTextStorage, which broke with 10.6 for us and the bug report was answered with "wait for 10.7..." and before that the swift introduction and deprecation of GC. While I still enjoy writing software for macOS, actually more than for iOS, it's hard for Indie developers. I also wish that people would realize how much work it is to create and maintain software over years and why $1.99 is not enough for every app.