While you are on the site, in your browser find and click "Add to Home Screen" A CGN beaver app icon will then be created to your phone that is directly link to the site.
Note: This feature may not be available in some browsers.
I know this is a couple years old, but I've not seen much FAB love in my searches. I've been using a Fab Defense AFG combo (PTK and VTS) and both are great. Rock solid. Light. Robust. Try one!