This is the demo test of the next version of the presentation video. You have some improvements like the zigzags and the "Are you sure" menu in the pause.
Download the .apk, and click on it in you Android device to install it. If it doesn't install, you have to go to settings -> security -> allow unknown sources
Music :
"Salty Ditty" Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
Creativecommons.org