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.
https://123dok.net/document/q5mj39ry-القياس-السوسيومتري-الأساس-النظري-وبعض-المبادئ-التطبيقية.html