Font Awesome Overview
A free font comprised of over 400 scalable vector icons. Font Awesome includes icons for pretty much any use including spinners, file type icons, currency symbols, directional icons and loads more. The font was originally designed for use in the Bootstrap HTML, CSS, and JS framework but you can download the font as an OTF and TTF so it's ready to include in any iOS app. Font Awesome is fully open source and is GPL friendly so you can use it for commercial projects.