Spacetime is a futuristic clockface. Pick between images of the Moon, Earth and Saturn; and choose from three colourful starry backgrounds.

Occasionally you will get a ‘visitor’: an asteroid, comet, spaceship or alien will transit the screen. There are eight different visitors — but to see them all you’ll have to exceed your daily activity goal!

Spacetime uses big bold fonts, making it easy to read the time at a glance.

An activity measure (calories, steps, distance, AZM or heart rate) is displayed, as well as its percentage of the corresponding goal. Touch the screen to change measures.

Spacetime allows you to display energy in kilojoules (kJ) instead of calories, and supports a range of different date formats.

On compatible watches, Spacetime has an Always On Display (AOD) mode.

Cost: $1 USD + tax.