When installed, disconnecting a distracting app during Opal session will also block the website on desktop!
How to install
Navigate to chrome://extensions/
Enable developer mode (top right)
Hit "load unpacked" extension (top left) and point it to the root directory of un-zipped extension
In case you have a lot of extensions installed, icon might not be visible. You can make it visible if you click on a puzzle icon and pin Opal extension.