iphone app needed

I want to get a app created for our website www.abundantfoodsavings.com. This app would basically be linked to our rss feed. It would show the latest 10-15 deals so that when someone is shopping it will give them lists of what they can get deals on. There is already an app for cellfire which is free. I want to do something similar to theirs. Let me know what is involved to create this and your price.