Develop a very simple universal android applicatoin

Hi, I want a very simple application in android. The proposed app will be more or less as existing application "Wheres My Droid" in android store. My proposed application should be universal for all android mobile device. Application will have 3-4 screens only. All API and graphics is ready so only you have to code the application. If you successful and impressive then you can expect long list of apps from me. Only serious bidder. You may have to sign NDA. Thanks