Flex your nerdiness with Bennett Binary Clock!
A highly customizable binary clock for Android. Put it on your home screen as a widget, run it as a live wallpaper or lock screen, or turn an old phone into a full screen desk clock.
Get it onGoogle PlayFree · Android 6.0 and up
How to read it
Six columns, one digit each
Pairs of columns
From left to right the columns are hours, minutes and seconds, two columns each: tens, then ones.
Each row has a value
From the bottom up, the rows are worth 1, 2, 4 and 8. Lit cells count; dark cells don't.
Add up each column
A column with the 4 and 1 lit is a 5. Turn on bit labels above to see the values while the clock runs.
Everywhere on your phone
Widget, wallpaper, lock screen or full screen

Home screen widgets
Add as many widgets as you like, each with its own theme and settings.

Live wallpaper and lock screen
Set it as your wallpaper, with a separate lock screen wallpaper on Android 14 and up.

Full screen clock
An always-on display that turns an old phone into a bedside or desk clock.