1) Mobile app usage has grown tremendously since 2009, with gaming, social networking, and music being the most used app categories.
2) Time spent on mobile apps now exceeds time spent on the web or watching TV. Games and social media like Facebook are the most popular types of apps.
3) App revenue has also grown significantly since 2008, mainly from virtual goods and advertising. This revenue growth has outpaced the early web.
4) Mobile apps are disrupting many industries like retail, where commerce apps drove 200-300% sales growth, and media/entertainment, where apps are increasingly replacing TV viewing.