Flip Clock

The clock from a 1970s train station, on your desktop. The digits fill any window, and every card falls and settles like the mechanical original.

Free · macOS 15.4 or later · Install steps

Flip Clock runs on a Mac. Open quietpixel.dev/flip-clock on your Mac to install it.

The flip

A leaf, not a fade

Most flip clocks cross-fade two pictures. In Flip Clock, the top half of the old card is a leaf. It falls under gravity, gets faster on the way down, and bounces a little when it hits the stop.

Its shade comes from its angle. It goes dark as it turns edge-on, and light again as it lands. Watch the card here in slow motion.

The fit

Any window. No clipping.

Make the window wide, square or tall. The digits grow to fill it on the short side, with an even margin, and never get cut. Press ⌘= to snap the window to the clock's own shape.

Or drag the corner of the window.

The alarms

Out of sight until you need them

Move the pointer over the clock and a bell appears. When the pointer leaves, the window buttons and the bell fade, and only the clock stays.

The alarm popover below the bell: a list of alarms and a time field with an Add button
Add an alarm Press ⌘N or click the bell. Turn alarms on or off, or delete them.
A ringing alarm: the clock dims and a banner shows 10:23 AM with Snooze 9 min and Dismiss buttons
When it rings The clock dims. Snooze for 9 minutes or dismiss. If you do nothing, it stops after a minute.

Install Flip Clock

  1. Download the disk image. Open it and drag flip-clock to your Applications folder.
  2. Open Flip Clock. It is not notarized by Apple, so macOS stops it the first time. Close the warning.
  3. Open System Settings › Privacy & Security, find the message about flip-clock, and click Open Anyway. You do this only once.
  4. Resize the window as you like, then press ⌘= to fit the window to the clock.

The same commands are in the Clock menu and when you right-click the clock.