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.
Firebase(파이어베이스): 실시간 데이터베이스를 Rest API 형태로 사용하기 + DB에 서버 시간 저장하기 http://yoonbumtae.com/?p=3737