I need an iPhone app. I already have a design for it, I just need it to be built. Users login to their account which stores their payment information and email address / password. The app uses their location to show a list (on list view) of the participating restaurants in the area that are signed up with our service. The user clicks a restaurant, and they see that restaurant's info -- what kind of food, what deal they're promoting, etc. and basically buys a voucher or gift certificate of some sort. That's the basic idea. Our company then collects a small fee on that sale. Those are pretty much the essentials.