Develop mobile food ordering APP

I want to develop a mobile app. The functionality will be very similar to the following websites: [login to view URL] [login to view URL] iPhone Blackberry Android App Spec: 3 elements: 1. Client App Create an account and enter billing information Find restaurants that are close by that offer pickup, or deliver to a given address This could be typed in Or GPS Located View those restaurants: Menu’s Photos Special Offers Place an order for delivery/pickup Schedule an order for later delivery/pickup Pay securely using their account (credit card, paypal etc) Add a gratuity to the order 2. Business User App Allow user to receive orders to iPad, iPhone or iTouch or email. Mark orders as delivered/picked-up App must notify user of a new order through visible notification 3. Web Portal (Back-End) Allow a business to upload their menu with prices for the items Allow user to set option to allow for delivery/pickup Set opening hours Upload logo Upload photo’s Set special offers for New Customers Returning Customers Map location Map delivery area View previous orders & produce reports on orders taken and time taken to fulfill the orders The business would be able to locate the customer using GPS location. For example if the customer was on a golf course, then the business would be able to track the user (with permission) so that they could deliver the order to the customer.