An Always On Clock for Android.

A clock for solar time in the octal number system

Clock with seconds as widget or fullscreen

A free and open source app that shows a large digital clock

Stopwatch and clock with giant digits

Low brightness clock

Clock widget

A dozenal (duodecimal, or base-twelve) clock and homescreen/lockscreen widget.

Align your biorhythm with the sun

Shows the current metric time in a widget on the home screen