Mobile content has evolved considerably in the last few years, taking off into new directions and paths as fast as the evolution of the mobile phones themselves creates both the new paths and the new content possibilities. Technology has made it possible for calls to give way to voice mail and text messaging, for nearby calls to become international calls, and for monotones that approximated song melodies with beeps to become real tones that were actual, true clips from the songs themselves. Mobile content has recently undergone another phase of expansion with the mobile app, a small program run by a smartphone platform to accomplish various purposes, from organizing a day planner to fighting a fictional but deadly civil war between races of shape-shifting robots on an alien planet.