Stardome

A real star map on your wrist, computed on the watch for your location and the current minute. 734 Yale Bright Star Catalogue stars, 53 constellation figures, the Moon in its true phase and the visible planets by name - and the time written into the sky as constellations of real stars. It is completely free.

• The real sky: 734 catalogue stars over the whole celestial sphere, north up, the point straight above you at the centre, the horizon at the rim. Both hemispheres, every season.
• The time in the stars: each digit is a small constellation whose corners snap onto real stars wherever the sky offers one. Raise your wrist and it lights up, then sinks back. Leave it lit, or switch it off and the clock moves to the top of the dial.
• Moon and planets: the Moon in its true current phase, Venus, Mars, Jupiter and Saturn named whenever they are above the horizon.
• Meteor showers: around the peak of each of the nine major annual showers, the radiant appears on the map with its name. Perseids in August, Geminids in December.
• The Milky Way along the galactic equator, brighter towards the galactic centre.
• Sky brightness follows the sun through dusk and dawn, or stays in deep night.
• Four data fields on the flanks, any native metric; weather shows the condition icon beside the temperature. Press and hold one to open its app.
• Star and planet names can be switched off, for a map with nothing written on it.
• Four sky palettes, including Ember, a red mode that keeps your night vision at the telescope.
• Always-on display: the figures, brightest stars, planets, Moon, time and your data stay on black.
• Nothing downloads, ever - the star catalogue ships inside the app. No account, no phone app.