Iphone and Droid Apps

I saw an app on a droid the other day called MyCoupons. For $20.00 per month, you can advertise within a 20 mile radius of your business. I am going to try it this month and see how it does. I am assuming iphone has something similar, but I haven't checked it out yet. Just another advertising idea for any of you who are looking for something different. It's likely to draw in a young to middle aged technology oriented crowd.