App-analytics firm SensorTower has been releasing some of its data tracking Android and iOS apps globally in the third quarter of 2019. That includes quantifying the top 20 apps by overall downloads, with TikTok in second place – behind only WhatsApp – with 176m new installs in Q3. SensorTower noted that this was 13% growth quarter-on-quarter, although as it revealed earlier this week, the year-on-year trend is actually down, according to its estimates. Of those 176m new downloads, only 37m were from Apple’s App Store (although that still meant TikTok was the most popular iOS app by that metric in Q3), with the other 139m coming from Android’s Google Play store. In the overall top-20 list covering both stores globally, Instagram was fifth; YouTube ninth; Snapchat tenth; Spotify 13th; and YouTube Music 16th.