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.
蘋果WWDC2012全球開發者大會完整影片(中/英文版本) https://qooah.com/2012/06/16/wwdc-2012-keynote/