Two-thirds of Americans do not download any apps in a month, while 8.4 percent download one, 8.9 percent down- load two, 6.2 percent download three, 3.7 percent download four and 4.8 percent download five to seven apps, according to comScore. All told, those Americans who download one or more apps total one third, or 34.5 percent of the Internet-using population in the United States.

For more information, or to download the executive summary of the 2015 Global Digital Media Trendbook, go to http://www.wnmn.org.