It’s a simple clock screen saver that makes you wonder, “Why didn’t Apple make one of these with Yosemite for themselves?” Robert Padbury, the designer, gave it a few features that I appreciate. It includes a light and a dark mode. The one I haven’t tested is changing the screen saver to red at night, but I am curious.
Good screen savers for the Mac are hard to come by. I wish I had found more of them over the years. Besides this one, there was a flip clock screen saver that I used. For the last three or so years, I’ve run OS X’s Arabesque, which is my favorite from Apple’s collection. ∞