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.
^ ^ ..well, it is ENGraved into the barrel lol. 2.5" is standard.
*Edit-I see in their Title, they list 3" (as well?) Be good to know, if 3" compatible/reliability as per it's a Lever.