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.
iTunes U 推出2.0大更新,帶來iPad製作課程及學生討論等! https://qooah.com/2014/07/09/apple-launches-itunes-u-2-0/