Starlight Install

See what’s in the sky above you tonight.

Hold your phone up and Starlight names every star, planet and constellation in view. It works with no signal and no account.

Point your Android phone’s camera at the code to install.

Download Starlight 1.8 for Android

APK, 1.8 MB · Android 8 or later

Starlight’s sky view: Cassiopeia selected, with its stars joined and a card describing the constellation

Tap any star to meet it.

All 8,920 stars you can see without a telescope, the 88 constellations, the planets, the Moon and 26 clusters, nebulae and galaxies. Tap one for its name, its distance, and how old the light is that reaches you.

A star card for Spica: 250 light-years away, its light set out in 1776

Know when it’s worth going out.

Tonight shows when the sky gets properly dark, what the Moon is doing, which planets are up, and a year of eclipses and meteor showers for where you live. Set a reminder and it tells you when to look.

The Tonight screen: truly dark from 6:46 PM to 5:31 AM, a waxing crescent Moon, and the planets visible tonight

Nothing leaves your phone.

Starlight works in a field with no signal. It knows your city, not your street: your position is rounded to about a kilometre. No account, no ads, no analytics. Satellite and aircraft tracking stay off until you turn them on.

The sky view in airplane mode, still showing every constellation

The sky tonight, at about 9 pm.

Then fly through it.

Outbound is a small game in the Play tab. You steer the Lark, a gold glider, out of your own sky and collect real constellations star by star, in the order their lines join. The aliens are made up. The stars are not.

Install it in a minute.

  1. Download the APK on your Android phone. If Chrome asks, choose Download anyway.
  2. Open the file. Android asks to allow installs from your browser. Turn on Allow from this source.
  3. Tap Install, then open Starlight and step outside.

Starlight isn’t on the Play Store yet, so Android asks before installing it. That warning is normal for any app from outside the store.

Signed by Starlight. Certificate SHA-256: c304 2b69 dd73 6f4f ef6b 8fc7 6831 3359 b2bc def7 6fe0 b66d 952d 1bd1 6d32 ce81

Point your Android phone’s camera at the code to install.

Download Starlight 1.8 for Android

APK, 1.8 MB · Android 8 or later