Developer Edward Kim is undoubtedly pleased with his $13,000/month from the Car Locator app in the Android Market. He states that he made this app as a side project while vacationing with family. Not bad for a side project, this app finished third in Google's Android Developer Challenge 2.
If you love gaming as much as you love tinkering with your Android device, this is a perfect solution for you. The app gives you access to your Xbox Live gamer profile, as well as your friends profiles.
The developer's state:
"Designed for hardcore Xbox 360 gamers and Android owners, 360 Live is a gorgeous looking application that shows your friend's Xbox Live stats such as their gamerscore, online status, gamer pictures, avatars, latest games, achievements, send/receive messages and much more."
This app cost $2.50 and is in the Android Market now.
AndroidandMe, conducted Android bounty competition which they set some parameters for developers to go away and make some applications for Android. In return they would offer a developer $90 if they fulfilled the parameters and were the first to do so. The second set of parameters included porting Quake II to Android.