Two other solutions: 1. Support Safari extensions in Mobile Safari. Users install it from the gallery, get a nice little icon to tap in the toolbar. 2. Suppor

Two other solutions: 1. Support Safari extensions in Mobile Safari. Users install it from the gallery, get a nice little icon to tap in the toolbar. 2. Support an HTML tag in the head, like web browsers do to detect feeds today. Something like <link rel="bookmarklet href="javascript:location.href...">. The browser would detect this, display some sort of notification icon in the address bar, and give the user the option to install it upon tap.