I'm the author of this blog post, and I thought I'd respond to a few valid points that have been brought up here:<p>- The reason I wrote about and actually itemized cost is because, well, you don't see much of that at the moment. People like Paul Graham say that a startup can be funded with $20000, but what does that really mean? What's the nitty-gritty?<p>- I didn't include things like pencils and chairs because everyone has pencils and chairs. I wanted to touch on what and where we had to spend to get this particular app going. Your results may vary; surely if you're doing a game you'd probably need more art assets, etc. The point is not that oh, we did this for so little money, we're so great - it's a personal story of how _we_ built an app, and to embolden others that hey, it's doable. That's why I linked to the Guy Kawasaki post at top of this article - it inspired us!<p>- TX is probably trolling, but I have to dispute the idea that linux kernel devs don't share their experience. Sure they do: it's in their well-written code and comments. We're closed source, but my partner will be posting about technical issues and speed wins for iPhone development soon, and there will be more to follow when the iPhone NDA lifts. Our app may seem simple, but if you could open it up you'd find an elegant tourbillon - it wasn't thrown together in the slightest.