Flip Clock is a web app is developed for iPhone & iPod Touch devices. Visit this site on your iPhone or iPod Touch to install Flip Clock to your homescreen, it works even when you're offline.

Install Flip Clock by tapping the + button then Add to Home Screen. You can launch it from there, and it works even when you're offline

Flip Clock is best viewed in landscape mode. Rotate your device to display clock

Flip Clock is a little side project from dedy.tv. You can find more fun stuff over at the lab.

12-hour clock
24-hour clock