A simple Facebook App

Hi, I need a simple facebook app similar to "Your Romantic Date" app. You can search for that app in your facebook to see it. Basically, I need 1. an app which will offer something to the user like in the "Your Romantic Date" app 2. before user can see offer, he will have to invite all his friends 3. get general information of user like email, birthdays, friend list & store it in database 4. You need to make it such that it can be duplicated to create more apps for different offer Lowest bid will win. Prefer experienced service provider who can demonstrate similar apps done before. Good Luck!