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.
超棒iPhone App企劃模擬工具:POP - Prototyping on Paper https://qooah.com/2012/11/21/pop-prototyping-on-paper/