The very first public project that I conducted on NichePursuits.com was my attempt at building an iPhone App! I did indeed build an app, and it worked well for a short period of time.
However, the app eventually had some technical difficulties that made it an unattractive business. At the end of the day, I let it fail.
I learned quite a bit going through this project, brainstorming for ideas, hiring a developer, and getting something sold on the app store. I'm sure my next iPhone app will be much more successful due to this experience, and hopefully you can learn a great deal as well!
Read all the posts related to this project below.