End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
AlphaGo 不戰而勝, 柯潔屈居世界第二 https://qooah.com/2016/07/18/alphago-no-1/