WhatsApp on Thursday announced that private and secure one-to-one voice and video calls are now available on the desktop app for Windows and Apple Mac devices. To make desktop calling more useful, WhatsApp has made sure it works seamlessly for both portrait and landscape orientation.

It appears in a resizable standalone window on your computer screen, and is set to be always on top so you never lose your video chats in a browser tab or stack of open windows, the Facebook-owned company said in a statement.