what's the most popular app
A recent survey from Nielsen lists the most popular smartphone apps of the year. The results indicate that Google and Facebook dominate the mobile app space. Facebookâs primary app proved to be the most popular of 2015 in the U.S., with more than 126 million unique users on average. Google, meanwhile, owns five out of the 10 most frequently used apps. YouTube placed in second with around 97 million unique users, and Facebook Messenger placed in third with about 96 million.