Another technically fun game! It seems like there was a geocaching feel to the whole idea behind the game, which could have worked its way into the challenges that were displayed on the phone.
I recall thoroughly enjoying (and laughing) at how great the intro track was before each game. It would be cool to see if you could resolve the k-means problem in a more fancier way, and maybe look into generating specific levels for more varied gameplay.
Overall, well done on execution and technical fanciness. :D