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]一邊打字一邊隱藏,防止被人看到正在輸入SMS內容的HiddenSMS https://qooah.com/2011/02/14/ios-hiddensm/