It'll be interesting to see how the "app boom" turns out. The demand for apps right now reminds me of the demand for all of the shareware, etc programs of the late 90s, when personal computing was growing at a rate analogous to smart phone usage today. Utilities to speed up your internet and computer and the cute little animated tray programs, etc. (I had a soft spot for Tiny Elvis, who at random times would be awed at the size of a an icon on my desktop and then do a little jig). It was normal to pay for a web browser or video player.

I find myself only using apps that satisfy a core set of use-cases: favorite website consumption (HN reader, Reddit is Fun), media consumption, and social media. I play games much less than I thought I would have but I think it is the one subset of apps that will continue to see demand. The apps that list different types of knots...not so much.