If you use this app mostly on your phone then you may not be aware of that recently WhatsApp standalone desktop application was released for the Windows 8 64-bit and 32-bit PC/Computer. One of them is the video calling feature and other being the GIF image support. Two new features of this app are on the way. Some of the latest added features are WhatsApp encryption, text formatting and support for all kinds of document files (ppt, doc, xlsx, pdf). We daily hear about the app improvements and new functionalities that the developers add into WhatsApp. And it is currently the most popular chat app on android, iOS and Windows phone.
WhatsApp is the most used chat app worldwide.