https://qz.com/1272285/bytedances-music-video-app-douyin-tik-tok-is-the-most-downloaded-iphone-app-in-2018s-first-quarter/ >The app dominating iPhone downloads this year isn’t the one many would’ve expected. >The Chinese mini-music-video social network Douyin was the most downloaded iOS app in the first quarter of 2018, according to a new report from US research firm Sense Tower. The app, developed by Beijing-based tech unicorn Bytedance, took over the top spot from Facebook’s WhatsApp, with more than 45 million downloads worldwide during the three-month period.