App Development Drudgery (App Icons)
The problem here is not the tools; it's the fact that the tools are necessary at all. I get that there are some artists who want to tweak their app icon at each of the required three million different resolutions, but for the rest of us, I just want to create a single 1024x1024 icon (or whatever), import it into Xcode and be done. To that end, Icon Set Studio by Nicolás Miari is indispensable.
Check it out. You won't regret it.
Also, with macOS, you need to create the rounded corners yourself, and I've found this python script to be useful for that purpose (even though I dislike Python and nothing ever runs on the first try). pip and I just don't get along.
It isn’t easy me to admit this, but I think I actually like JavaScript / TypeScript more than Python. “Dislike less“ is maybe the more accurate description. Is npm better than pip? I don’t know.
