Has anyone here tried their hand at app development to produce passive income? I did a quick search, but I didn't see any posts about this particular subject. I have some programming experience, and I've thought off and on about how cool it would be to make an app, and possibly profit off of it. Depending on the complexity of programming required, it might be a decent payoff. On Android, you can make a free version that shows ads, so you can get paid that way(similar to google adsense for blogs). On iPhone, I don't know if an ad system works, but you could always just price it at $0.99-$1.99 and hope people find it useful enough. I was just wondering if anyone else had tried it out. I have an idea that I'm thinking about, so if anyone is interested in the process, I can document it in the journal section of the forums. At least then I will publicly put myself out there and have people holding me accountable.