Earlier quoted context omitted.
> and trust me, I have some pretty obscure apps This is a very good point. Everyone gets fixated on being the top-whatever in the category but the key is to be in the top 5 for your niche category. For example, search Salsa. I have on good authority that one of those top 5 paid apps was selling in excess of several thousand copies a month. Do your market research. Dominate your niche. Compete in that niche. The App S…
> This is mostly passive income. As a non-iOS developer I don't really know if an app that's 1 years old and has not been updated will continue to generate sales. I make lots of comments on HN. Each of those is theoretically `passive income` for karma, but that doesn't mean I will keep getting karma for those comments...
Clearly you're not going to live on $5 a day, but I think a good strategy is to build a decent number of smaller "library" apps while working to fry bigger fish.