A simple design analog clock where balls orbit to represent analog hours and minutes. An additional animated small ball is there for seconds.
Everything turn around a label displaying a statistic value: current heart rate or number of steps.
You can loop between heart-rate and steps by tapping the screen once. Double-tapping the screen hide the stats. Tapping the screen makes the stats display back.
When the heart rate is displayed, this label is pulsing on, reminding the user the role of this value.
The fun thing is that the orbits are displayed according to your wrist orientation and your movements (walk, jump,...) thanks to accelerometer data, so do the background stars.
Note that the sensors used in this clockface are turned off when the clock is not displayed.