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.
iOS 앱 포트폴리오: 음악 스케일(음계) 학습 도우미 앱 UltimateScale 애플 앱스토어 출시 � http://yoonbumtae.com/?p=4606