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.
有空來坐 https://cat-sky.tw/2013/05/11/%e6%9c%89%e7%a9%ba%e4%be%86%e5%9d%90/