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.
Apple 手寫筆與 iPhone 觸控專利,重新定義單手操作! https://qooah.com/2016/06/24/apple-reachability-ui-for-ios/