Apple Inc. and Google removed TikTok from their mobile app stores in the US as required by a law that took effect Sunday, after the social media company’s legal challenges failed to head off the measure passed last year to address national security concerns.

Apple and Google removed TikTok from their app stores Saturday, complying with a law requiring China's ByteDance to divest the social app or see it face an effective ban in the U.S.

TikTok stopped working in the United States late on Saturday and disappeared from Apple and Google app stores ahead of a law that takes effect Sunday requiring the shutdown of the app used by 170 million Americans.