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'm not sure how easy it is to get at the moment. Good thing I bought 4 boxes of factory ammo when I did. You could try posting your request on the Exchange of Factory Ammo and Reloading Equipment section.