Viral video app, TikTok, has crossed 1.5 billion downloads worldwide on the Apple App Store and Google Play Store, according to the latest Sensor Tower report. TikTok ranks at number three when it comes to the most downloaded non-gaming app of the year. WhatsApp continues to be the top app, followed by Messenger, Facebook, and Instagram at second, fourth, and fifth spot respectively. For latest news follow www.deccanherald.com.