I am looking for someone to develop an iPhone mobile application with multiple components.

The first component will be for business promotion and link to a back-end database so that we can update information about the different facilities / events within the business. We will also need the capability for push notifications.

The second component will be a game element where people have to complete tasks/challenges and collect tokens to win discounts etc. We are thinking about a person walking a path or riding a bike and are keen for some input on the best interactivity options available here but have the basic outline determined for now. There will also need to be in-app purchases within this game as well.

Once the app is developed we will require it to meet all of the requirements for submission to the iTunes app store.

In order to be successful please tell me about your experience in developing mobile apps and also let me know how we go about defining the elements of the app to you so we can work out the final elements that we require.