BizSugar.com › Social Media › Facebook’s Messenger Topples YouTube, Second Most Popular App in the U.S.

A year after it forced users to download the Messenger app to continue messaging friends, looks like Facebook’s big bet has paid off. Facebook Messenger is now the second most popular mobile app in the United States.
For the first time, the app edged out YouTube by 0.2 percent to occupy the second spot on comScore’s most popular smartphone apps list. With an impressive reach of 73.3 percent, the Facebook app tops the list.