App Annie, an analytics company that monitors app rankings, found music app revenue jumped 77 percent last year from 2012, in a review of app data. The category moved up to the third most popular type of app last year, after being ranked seventh in 2012. Social networking apps moved up the same number of steps in the rankings to the No. 2 spot, with games continuing to dominate the chart.
That music-app growth was led by Pandora. Worldwide, the Internet's … Read more