Development of social networking/photo sharing iphone app

Development of an iphone app for social networking. Features are: Sign in, log in screen, 3 screens of intro to the app, users will post photos, comment, 'like', and follow other users, private message between mutual followers Home page, profile page, search option (followers or favourites etc) I am looking for an experienced app developer in this area to produce a high quality, contemporary, slick app with quality graphics and 'easy to use' functions for the users.