Facebook this year continued to hold the number one position as the top app installed on U.S. smartphones based on the average number of unique users, according to a new report out this week from Nielsen, but its mobile messaging application clocked in as the fastest-growing app of 2015. Having foreseen the shift from more public social networking to private communications, Facebook forced users to install Messenger in spring 2014 by ripping out chat from its main app. In the months since, the app has soared to the top of the App Store’s charts. Over 2015, Messenger grew more than any other app, the new report says – with a 31 percent increase in users from 2014.

That’s slower growth than Messenger saw in 2014, when it rose 242 percent over the year prior thanks to Facebook’s huge push. The question now will be whether or not Facebook can do the same for its next most-promising creation, the private photo-sharing app Moments which is now replacing photo-syncing on Facebook’s social network.

Also in the running for fastest-growing app was Apple Music, which saw a 26 percent year-over-year climb. However, that’s a bit of different situation from Messenger, given that Apple’s streaming music service only launched this June.

In terms of the top apps by users, Facebook led the way with more than 126 million average unique users each month, up 8 percent over last year where it was also the top app. And YouTube was hot on its heels with 97 million average unique users each month, up 5 percent over last year.

Source: http://techcrunch.com/2015/12/18/nielsen-facebook-remains-the-top-app-of-2015-but-messenger-was-the-fastest-growing/?ncid=rss