Facebook, YouTube most popular apps of 2015

New Delhi: Probably the most widely used and known social networking site, Facebook's users visit it almost every day, some of them even addicted to it. With over 126 million monthly users, social networking giant Facebook has been voted as the most popular application of 2015.

According to a latest Nielsen report, the Mark Zuckerberg's company is the most popular app of 2016.

Meanwhile Google's suite of mobile apps-think YouTube, Google Maps and Gmail-have overtaken smartphones, claiming five out of the top 10 spots in Nielsen's list of the most popular apps of 2015, PC world reported.

Google-owned YouTube is the second most-used app in the US with over 97 million users.

Instagram came in at number 8 with over 55 million users.