The Krëndler is an in-app debugging tool, the coolest feature of which is the live "morphing" of your view hierarchy.
This is accomplished with a few well-placed CATransform3D calls.
The library also allows for recording and analysis of touch tracks, as well as some other useful developer features like view the console, trigger memory warnings, and kill the app immediately.
The Krëndler's iOS component was written by Steve Sparks and Mark Dalrymple. The web components were authored by Gregg Rothmeier. Krëndler is property of the Big Nerd Ranch.