ANDROID DEVELOPER NEEDED ASAP FOR SIMPLE APP

Hi Friends I need a simple and unique App Developed where the user can play trivia games. The user can choose Categories and earn some points when the get the correct answer or lose points every time they get the wrong answer. (e.g like jeopardy tv show) When the user reaches certain number of points they can redeem a coupon for certain amount or continue playing for bigger prices. Kindly reply with previous works. I would prefer someone for lowest price for this project . An agreement will be signed when the project is awarded so that you will not sell or disclose the completed job. Please PM me if you have any questions. It should be for android, blackberry/ ipads, iphones, ipods etc.