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.
YouTube 推出4K, 60fps 影片,你的電腦頂得住嗎! https://qooah.com/2015/03/28/youtube-4k-60fps-video/