Android Reward Offerwall Points App -- 2

Mobile Developer Wanted Wanted to build competitive app similar to Juno, MintCoins, MyRewards, Whaff tapporo Developer Will - Build Mobile App - Build Web Services - Build Simple Backend that will manager users, edit profiles, points and notify us of pending payouts ** Priority given to those who have built similar apps, or have source code/snippets to accelerate the process. This app is essentially the following: 1. User Regsiters using email or social network (FB & twitter) or google+ 2. User completes various offers using offerwalls (SuperSonic Ads, NativeX, Vungle,Adcolony, etc) 3. When user completes offer advertiser posts to postback script that updates users points 4. User can see his stats and points and when they reach 100 points they can request a paypal payment or gift cards 5. App notifies admin to send money Simple as that please only bid if you can do this under $250 budget .Thanks