You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Thank you OP. I realize you wrote this a while ago, but found your post recently after searching to do a similar install. Lots of useful info. (I can't 'like' posts yet since my comment count is too low).