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.
ニジェールの若年技術者 自ら発明した装置で工場大気汚染の改善に取り組む https://jp.globalvoices.org/2017/12/26/47505/