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TikTok was the No. 1 mobile app in the US last year, with 94.0 million downloads, a 6% increase over 2020. Runners-up Instagram and Snapchat reached 64.0 million downloads and 56.0 million downloads, respectively, meaning the three most downloaded apps in the US were all photo- and video-sharing platforms.

Beyond the chart: More than 1 in 4 people in the US were monthly TikTok users in 2021, while about 1 in 3 used Instagram as often, per our estimates. The short-video app saw the widest adoption among 18- to 24-year-olds, and the Meta-owned platform, within the 25-to-34 set (over 70% of each cohort). Though it will continue to lag TikTok in user growth for the next few years, Instagram will avoid the stagnation of its sister app Facebook.

More like this:

• Report: US Social Network Users 2022
• Article: Facebook’s metaverse future gets a reality check from declining user numbers, record losses
• Article: Which social networks excel at holding users’ attention?