REPUBLIC WORLD - Oct 6 - Tinder was the most downloaded app in the online dating category during September 2019, according to research firm Sensor Tower. Tinder had close to 5.5M installs in September, resulting in a total of 4% increase from the same period last year. Badoo was the second most installed dating app worldwide. Tantan, MeetMe, and Happn rounded out the top five most installed dating apps worldwide for the month. Here is the full list of top 10 dating apps.