IPhone Ratings App

Hi, I need a very simple ratings app that allows users to vote on the top 10 best items. We want to create an app for the best Web Hosting Companies. We will list 1-10 on page one. List 10-20 on page two. Users can rate the companies up or down. Users can submit their own companies. This should be a very simple app. Similar to this: [login to view URL] The links to the companies will be in-app. just use the in app browser. users click "back" to go back to the app We also need a simple login. username and email to track user votes. each device votes 1x.