Simple profiler created for GAE: <a href="https://github.com/jriecken/gae-java-mini-profiler" rel="nofollow">https://github.com/jriecken/gae-java-mini-profiler</a>
This is a side project my partner and I worked on. We built it on Google App Engine. I made all the drawings using Autodesk Sketchbook Pro on the iPad.