Launch WhatsApp Desktop, scan the QR code it displays with your mobile (Settings > WhatsApp Web menu), and the program will automatically sync your contacts and settings.Ī few seconds later your current chats are displayed, and you're able to carry on the conversations as usual. This does at least make setup very easy, because there's almost nothing to do. You can't install the program just on a couple of PCs, for instance- it's purely an extension of your mobile app, a native version of WhatsApp Web. The desktop edition isn't designed to be used separately. WhatsApp is a free PC and Mac version of the popular messaging app.