Thanks for asking. Interesting to me, and I'm sure, to many others too, although HN seems heavily web-tech-biased, for well-known reasons, which I won't get in

Thanks for asking. Interesting to me, and I'm sure, to many others too, although HN seems heavily web-tech-biased, for well-known reasons, which I won't get into. There are sure to be some, if not many, people building such apps and making money from them. Check HN user desktopapp's post on HN a while ago in a similar thread, in which they mentioned that they were making 750k per year from their app. Andy Brice (hermitcrab on HN) has made a good living for years with his QT-based app PerfectTablePlan. His blog is successfulsoftware.net. There are other examples, too, and I'm sure some will not be visible because they don't want competition.