The document discusses the growth of mobile devices and mobile apps from 2010-2015. It shows that in 2001, only 3.6% of people thought a phone and PDA could be combined, but by 2011 over 60% saw them as converging. Mobile app sales and revenues grew dramatically from 2010-2012. Many popular apps in that period included Foursquare, Groupon, Twitter and Facebook. The document also discusses engagement and return on investment for mobile apps and platforms, as well as a Japanese company called Loftwork that provides content management systems for web, mobile and print.