Game of Tongues: How Duolingo Built A $700 Million Business With Its Addictive Language-Learning App

by admin July 21, 2019

Created seven years ago by MacArthur “genius” computer geek Luis von Ahn, Duolingo has hooked everyone from Bill Gates, Khloe Kardashian and Jack Dorsey to Syrian refugees in Turkey. #howtoorganizeabedroom