FontTest
Tiny iPhone application for viewing all the available fonts at various sizes.
Download, move to /Applications, apply access rights 755 and restart the Springboard.
Rotary Progress Indicator
This is a progress indicator as seen in the Aperture sidebar and Espresso. It is easy to use and requires a minimum of space while staying super readable, therefore ideal for iPhone applications. Just call setPercent:(int) and the indicator redraws itself.
This work is licensed under the Creative Commons-License.