iPhone App Development

I have a need to have an iPhone application designed and developed.? I need experienced iPhone developers only.? The application (I will describe in more detail to the selected developer) is a business application that will interact with an existing web application.? The business OLTP application needs to support? mobile information/functionality and my company has choosen the iPhone as that mobile device platform.? The project will include the following: 1. Gathering requirements 2. Initial design (UI and functional design;? describe to our developers) 3. Web service interaction (integrate with our existing web services for authentication, and a variety of data management tasks) 4. Any graphic development support 5. Deployment to the Apple app store Please provide sample apps that we can look at to evaluate your expertise.