TikTok lets its users choose both a username and a display name. When first signing up for the video sharing service, TikTok provides a username right away. This initial name can be customized on the spot, but subsequent changes require a 30 day waiting period. Follow these steps if you're interested in refreshing your identity on TikTok with a name change.
Like all of the popular social media websites and apps, TikTok uses an algorithm to serve you content that you may enjoy. The app uses your interactions and other data to make recommendations for your FYP page. This means your history is stored in your TikTok data which can be downloaded in the settings. Your data includes comment history, chat history, purchases, likes and favorites.