The big one is called RedNote, and it's actually fairly well done.
Oh, wasn't meant at any dig in terms of quality, I don't believe in that kind of characterization. Besides, ostensibly, Chinese developers have been much more successful in this space and seem to deliver better products. I just wouldn't know myself as I stay off of shortform video platforms.
The irony of Americans flocking to a CCP-approved app whose Chinese name is translated to "little red book" is just a bit too on-the-nose. For those who don't know, Little Red Book is also the literature spread during the Cultural Revolution in China that was a collection of quotes and sayings by Chairman Mao.
There's gotta be a joke in there about the communists selling the capitalists the rope the capitalists eventually hang themselves with. But, I digress.
The meme I'm seeing everywhere is that with so many Americans joining RedNote, Americans are discovering how much Chinese people are paying for healthcare, food or property, and Chinese people are discovering things like 40 hour work weeks and actually having a holiday from time to time - so now the question is whether US or China bans it first.