TikTok is an iOS and Android social media video app for creating and sharing short lip-sync, comedy, and talent videos. The app was launched in 2017 by ByteDance, for markets outside of China. ByteDance has previously launched Douyin for the China market in September 2016. TikTok and Douyin use the same software, but maintain separate networks to comply with Chinese censorship restrictions. The application allows users to create short music and lip-sync videos of 3 to 15 seconds and short looping videos of 3 to 60 seconds.
It is a leading short video platform in Asia, United States, and other parts of the world. TikTok is not available in China and its servers are based in countries where the app is available.In 2018, the application gained popularity and became the most downloaded app in the U.S. in October 2018. As of 2018, it is available in over 150 markets, and in 75 languages. In February 2019, TikTok, together with Douyin, hit one billion downloads globally, excluding Android installs in China.