iPhone & Apple Watch · In beta

AstroGauge

Set up for a whole night under the stars. AstroGauge brings darkness, moonlight and the Milky Way’s direction together, so you can plan a night timelapse from your phone or wrist. Currently in beta testing.

AstroGauge Sky Canvas on iPhone, showing the Moon and Milky Way paths for a sample night in Bern

See the whole night

Follow sunset through sunrise on the Sky Canvas. Pinch between one detailed night and a calendar of nights, then tap a date to explore its sky.

Read moonlight at a glance

See the Moon’s phase, position and path alongside astronomical darkness. Your night at a glance brings darkness, moonlight, cloud cover and Milky Way visibility into one view.

Find nights that fit your conditions

Set the Moon, darkness, Milky Way and cloud conditions you want. Compare nights by their conditions match and inspect when each condition is in range.

Keep the sky on your wrist

Use full-circle, half-circle or graph widgets on your watch face and in the Smart Stack. The Watch app adds a compass control, a tappable date and detailed sky information.

Choose your view

Start with a preset or customize each widget’s axes, time window, paths, markers and centre. Switch between a polar sky and a Cartesian graph to read the same night your way.

Take it offline

Sun, Moon and Milky Way positions are calculated on your device using your current or last saved location. The Watch can calculate its own sky without a live connection to your iPhone.

Your night, from phone to wrist.

AstroGauge Tonight sheet with consistent darkness, Moon, clouds and Milky Way details
Tonight · your night at a glance
AstroGauge Plan sky graph above the compact date and location summary
Plan · keep the date and location in view
AstroGauge Watch Sky Canvas with compass control and plain tappable date beneath the graph
Watch · sky paths and a date within reach
AstroGauge Cartesian night graph showing Moon and Milky Way paths above the horizon
Cartesian · read height and direction
AstroGauge half-circle night rings with an open centre and sunset-to-sunrise times
Half circle · the night on separate rings
AstroGauge full-circle widget in the system gallery with cloud and conditions-match details beside the sky graph
Widgets · sky, clouds and conditions together

Screenshots from the current beta, using the labelled Bern sample and simulated cloud forecast. The widget gallery shows sample astronomy with cloud and match values unknown. Live cloud forecasts use Apple Weather when available. Astronomy works offline; moonlight glow illustrates brightness rather than measuring it.