Fonts are part of nearly every user experience in iOS and OS X. Learn about creating fonts by understanding font tools, Unicode, languages and their shaping behaviors, and font formats as explained in font specification documentation.
Tools and Documentation
Apple Font Tool Suite
A suite of command line tools for working with font files. This is a single installer package, complete with a 60 page tutorial, user documentation, and Quick Reference.
Apple TrueType Reference Manual
Apple provides its own TrueType Font Format Specification.
AAT Font Feature Registry
The Apple Advanced Typography (AAT) Font Feature Registry specifies software for advanced font rendering.
Fonts and Text Downloads
Access the tools you need for working with fonts in your applications.