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 believe I have the Butler Creek version as well, for use with the Steel Lips/Hot Lips magazines. It also works for the factory mags, though they fit a little tighter. It's a great way to crank through 500 rounds of .22LR with banana mags.