My generative music app Color Sounds has been completely rewritten with a lot of improvements and new features.
See the website for more info, including a web version (requires Flash).
The first version of Color Sounds was native Android written in Java. This time I wrote it in ActionScript 3 since I wanted to both make big changes to the app and learn the Flash/AIR platform anyway.
Some major perks were the efficient built-in functions for color detection and the great Robotlegs dependency injection framework. Also cross-platform possibilities, although certain things like the video playing and sharing features make use of Adobe AIR native extensions I had to build specifically for Android.
As before the Android app is available free from Google Play.