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.
중고폰 거래 '업스테어스', 28억원 투자유치.. "서비스 고도화 주력" https://wowtale.net/2021/08/05/28308/