Selling copy of ... sample, ripple HD (?) effect

Ripple effect looks quite interesting and there are some questions how to do such.
Apple has released the own sample, available from GLCameraRipple and this is not the end of the story: some guys have decided to sell the sample and more - it has been accepted by Apple and App Store, just here - Ripple HD
(verified by shaders :) - 100% the same, including "Copyright (C) 2011 Apple Inc. All Rights Reserved." )

PS if you are interested in "how to implement?" - just look for the full sources at the sample page from Apple, YUV -> RGB is there and more, like simulation of UVs via

runSimulation and rippleTexCoords

Nothing to say more from the technical side of the Ripple Effect implementation question.