What is the difference between the browser edition and stand-alone application
Help Center → Additional Information
DotVPN for browsers is just a plug-in that extends the browser functionality. It protects your traffic, ensures privacy and provides access to blocked sites.
But the browser edition of DotVPN protects only traffic to your browser, nothing else! A stand-alone application for a particular operating system (iOS, Android, Windows, OS X) protects all the traffic to the device, including any applications and services outside of your web browser.