Changes to existing iPhone app with db and web service connection

Our existing iPhone app for a personal fitness program needs some changes. Attached is a spec with the exact changes. In short, these are: - Change of the app layout (make tab-based) - Addition of a simple "About" screen and some other changes in the display (e.g., make 2 screens a flip screen) - Adding of a calendar control to supplement an existing date selector - Adding of a "stopwatch" feature - Changes in the data handling and the local db - Code cleanup and other changes. Details see attached spec Do not bid if: - You are new to Obj-C, sqlite3, and RESTful web services. All three things will be required. - Your coding style is "quick and dirty". There will be code review. Only clean and coherent code will be accepted - remember, part of the project is cleaning up the existing code. Happy bidding!