As 2014 comes to a close, it's always interesting to find out which apps get used the most. Each year, Nielsen, the company that measures TV ratings, also releases a list of the most popular apps of the year, breaking things down by how many average unique users each app has.
Business Insider: The 10 most popular apps of 2014
Facebook's main app was the most downloaded app of the year, with an incredible 118,023,000 average unique users. It's also gained some new users since last year, with a 15% year-over-year increase, according to Nielsen.
