With the Whatsapp desktop app you stay in touch with your friends at home or work. Like WhatsApp Web, thedesktop app is simply an extension of your phone: the app mirrors conversations and messages from your mobile device.
The desktop app is available for Windows 8+ and Mac OS 10.9+ and is synced with WhatsApp on your mobile device. Because the app runs natively on your desktop, you’ll have support for native desktop notifications, better keyboard shortcuts, and more
To download the app, visit https://www.whatsapp.com/download from your desktop browser. Then, open the app and scan the QR code using the WhatsApp app on your phone (look for WhatsApp Web menu under Settings).
Just like WhatsApp Web, the new desktop app lets you message with friends and family while your phone stays in your pocket.