You are developing your application and want to have quickly a preview of what would look like your application with some effects on text?
You need to show to a graphic designer or your client which font is available for your next application?
UIFont allows to access available fonts list on devices. You will be able to compare fonts and get a preview with different sizes and colors! Type some sample text and refine your thinking!
Once you have chosen your font and its parameters, share these information by mail or text message with your clients or colleagues.