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Sky Map
A real-time map of the night sky, for Android
Released 19 August 2026
Installing it
- Download the file above.
- Open it. Android will say the file came from an unknown source — that is expected for an app installed outside the Play Store.
- Allow installation from your browser when asked, then continue.
- Open the app and allow approximate location, so it knows which sky to draw. Refusing is fine: it falls back to a default position and says so.
All versions
Every release stays here. If an update misbehaves on your phone you can always go back to the one that worked.
| 1.0.0 — current 19 August 2026 | 18.4 MB |
All builds are for 64-bit Android — almost every phone made since 2017.
What it does
| Points at the real sky. Move the phone and the map follows, using the accelerometer, gyroscope and magnetometer together. |
| Five thousand stars, all 88 constellations, the Milky Way, the Messier catalogue, and the Sun, Moon and seven planets drawn from photographs. |
| The twelve zodiac constellations are drawn shining, with their signs, so they stand out from the rest. |
| Tap anything for what it is, how far away, how bright, and a line about why it is worth looking at. |
| The Moon shows its real phase, tilted the way it actually appears from where you are standing. |
| English and Arabic, with a night-red theme that preserves dark adaptation outdoors. |
How accurate it is
Positions are computed from published astronomical algorithms rather than looked up. Checked against NASA JPL's Horizons system, the Sun came out within a fifth of an arcminute of the reference — about a hundredth of the width of the full Moon. The app never claims a fix it does not have: if the compass is unreliable or the location is a default, it says so on screen.