Top Apps of 2021 A recent ranking of the top FREE apps of 2021 revealed most are social media apps: Tik-Tok, YouTube, Instagram, Snapchat, and Facebook. That’s a lot of socializing! Are you one of the few that do not use one of these top 5 apps? Do you feel like there are just too many social media apps to keep up with? What is the app on your phone that is NOT a social app–that you use the most? Is it shopping (Amazon) or a game or some other cool thing?