The US general manager of TikTok has said the Chinese-owned video-sharing app is "here for the long run", after President Donald Trump said he would ban it in the US.
Vanessa Pappas told TikTok users in a video statement that its staff were building "the safest app".
Mr Trump said he could sign an executive order as early as Saturday, amid concerns the app could be used to collect Americans' personal data.
TikTok denies any Chinese control.
The fast-growing app has up to 80 million active monthly users in the US and the ban would be a major blow for the Chinese firm ByteDance which owns it.
It was not immediately clear what authority Mr Trump has to ban TikTok, how that ban would be enforced and what legal challenges it would face.