The law requires TikTok's Chinese parent company, ByteDance, to sell its U.S. assets in order to continue operating in the U.S. While the law only mandated that ByteDance remove TikTok from app stores in the U.S. if it failed to meet the sale deadline, company executives decided to shut down the app entirely.

TikTok has been absent from the Apple App Store and Google Play Store since January. Now, it’s back. Here’s all you need to know.