Point it at the sky
Hold your phone up and the sky lines up with it: stars, constellation figures and names, the Milky Way, and a horizon with compass points. Tap anything to find out what it is.
Point your phone at the sky.
See what's up there.
ClutteredSky is a sky map for Android. It shows the stars, planets, galaxies and satellites in the direction you're pointing, laid over your camera's view. Turn on the aircraft layer and the planes overhead join them, each with its flight number, airline and altitude. The sky works offline, and the app doesn't track you.
Coming soon to Google Play
What it does
Planets you can zoom into
The Sun, Moon and planets sit where they really are. Zoom in and they turn into lit, rotating globes: Jupiter's Great Red Spot, Saturn's rings, moon shadows, the Moon's phase and libration.
Galaxies, nebulae and clusters
All 110 Messier objects, the Caldwell list and the brighter NGC and IC objects. Zoom in on one and a real sky-survey photograph fades in over it.
Satellites and the ISS
The ISS, Hubble and the brightest satellites, with their brightness, whether they're sunlit, and when one below the horizon will next pass over you.
Starlink, by name
The whole Starlink constellation, each satellite drawn where it is right now with its name and the path it's on. Watch a fresh launch's train climb, pick out the one crossing your view, and set how dark the sky must be before they appear.
Planes overhead, live
Point at a plane and find out which flight it is: callsign, airline and aircraft type, where it's flying from and to, its altitude, speed and heading, a few seconds old. Off by default, and the one layer that needs a live connection.
What's coming up, and time travel
A list of the year's sky events from where you are: meteor-shower peaks, eclipses, close pairings, Algol dimming. Tap one to jump there, or drag time forward and back and watch the planets trail.
Made for the dark
A red night mode that keeps your eyes dark-adapted, and auto-dim that follows the light around you.
Built to stay out of your way
Offline first
Every star, planet and deep-sky object is computed on your phone, so it works in a field with no signal. Only satellite orbits, extra-detailed planet surfaces and (if you turn the layer on) nearby aircraft are downloaded, when you're online.
Your location stays on your phone
It's used to work out your sky, and leaves the phone only, rounded to about 10 km, if you turn on the aircraft layer. No accounts, no analytics, no ads. Privacy policy.
Real astronomy
Positions from published models (VSOP87, Meeus, SGP4) and open catalogues, checked against reference ephemerides. Credits & sources.
Coming soon
ClutteredSky is in testing now and will be on Google Play soon. If you've been invited to the beta, head to the beta testers' page. Want to help test it on your Android phone? Email beta@offworldtech.io to ask for an invite.