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.
Sharpe Ratio 夏普比率 https://www.mpfdiy.com/2016/11/sharpe-ratio-%e5%a4%8f%e6%99%ae%e6%af%94%e7%8e%87/