NEW YORK - Chinese social media app RedNote, known in China as Xiaohongshu, gained nearly 3 million U.S. users in one day earlier this week as a flood of self-proclaimed "TikTok Refugees" joined, according to new data from analytics firm Similarweb.

With the U.S. ban on TikTok looming, many Americans are opting for another Chinese app known as RedNote. It could be short-lived.

As a TikTok ban looms, Americans are starting to download RedNote. Here's what you need to know about the app.