Website and Mobile Icons (Squirrly Favicon.ico) will make your site look professional in browsers, pads and mobile devices.
Once you have you site icon set up, Squirrly will add all the icons required by mobile devices, like an iPad. That way, when the site is bookmarked on a mobile device, your icon will be visible.
Squirrly does not physically create the favicon.ico file. This is the best option if you use WordPress Multisite option.