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.
BTW, you do realize that your scope is rotated 90 degrees to the left, don't you ? Elevation dial goes on top, windage on the right side. Some scopes have parallax adjustment knobs on the left.