In reality, it’s an expansion of the mobile device. WhatsApp Messenger 64-bit Download WhatsApp Messenger 64-bit is just a free chat messenger for communication with telephone numbers connected to the app Official WhatsApp for Windows 64-bit desktop application allows you to stay in touch anytime and anywhere whether on your phone or PC at home or work The WhatsApp 64-bit for PC is available for Windows 10, 8 and 7 and is synced with your mobile device a well-known application for messaging via mobile available these days for desktop and Mac.