It’s a cristallography app, it’s a symmetry app, and it’s also available for Java 2.0 mobile phones and for our computer’s browser. It’s free, too. Too bad it doesn’t (yet) make coffee.

http://itunes.apple.com/en/app/escher-mobile/id360530191?mt=8

http://escher.epfl.ch/mobile/

http://escher.epfl.ch/escher/