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.
トンデモ質問に大真面目に答えた(まったく実用性がない)科学本 What If? https://youshofanclub.com/2014/11/26/what-if/