Everyone seems to want to build a Mobile App based on a great idea or to extend their business reach. Your requirements are unique and therefore your costs will be as well. Get insights to the Elements of Cost in developing iPhone Mobile Apps.
Finding a well qualified iPhone developer at an affordable price in San Francisco can be difficult (to say the least). Unfortunately, paying a premium is all too common because of the strong demand for iPhone app development skills (plus the cost of living) in the Bay Area.
The idea that a single person should be able to handle all potential contingencies on any given project is simply unrealistic. There is no other time when the advantages of outsourcing your project to a Software Development Team have been more clear.