IPhone and Android Weight Loss Mobile App

We are looking for somebody to build an app for both iPhone IOS and Android mobile smart phones. We have an idea of what we are looking for and have screen shots if needed. A few app requirements: User Preferences (Age, Height, Weight, Male/Female, start date, Weight loss tracker, body measurement calculator, a counter for how many times you take the supplement daily, home page, meal tracker, FAQ's etc..) There are other ideas but we would like to discuss those with interested candidates.