No hidden costs: Once you and your friends download the application, you can use it to chat as much as you want.WhatsApp is available for mobile platforms Android and iPhone / iOS. Just like WhatsApp Web, the new desktop app lets you message with friends and family while your phone stays in your pocket. Upon downloading and opening the app, scan the QR code using the WhatsApp app on your phone (look for WhatsApp Web menu under Settings). Because the app runs natively on your desktop, you'll have support for native desktop notifications, better keyboard shortcuts, and more. The desktop app is available for Windows 8, Windows 10 and macOS 10.9 or higher, and is synced with WhatsApp on your mobile device. WhatsApp desktop app gives you a new way to stay in touch anytime and anywhere - whether on your phone or computer at home or work.