Learn the sky
- Guided tours, narrated by ALLISON
- A 580-entry encyclopedia that works offline
- 3D globes of the planets
- A constellation quiz, with achievements
: night sky guide for iPhone
Point your iPhone at the sky. Ask what you’re looking at, and follow the gold path to anything up there.
Free · No ads · No account · Works offline
Plate IAsk ALLISON
Say it out loud. She’ll show you.
Hold the button and ask, or type. “Where’s Saturn?” “What’s that bright one?” “What’s up tonight?” ALLISON answers in a sentence and draws a gold path on the screen to the thing you asked about.
- On your iPhone, not a server. Apple Intelligence runs on the device, so she answers in a field with no signal and your questions are never sent to us.
- She never guesses numbers. Positions, rise times and pass predictions come from the same astronomy engine that draws the sky. The language model only decides what you asked for.
- Point and ask. “What’s that?” answers about whatever is in the middle of your view, with a short encyclopedia entry.
Where’s Saturn?
ALLISONSaturn is in the SE, 34° above the horizon. Follow the gold path.
What’s that bright one?
ALLISONThat’s Vega, the brightest star in Lyra and the fifth-brightest in the night sky. Magnitude 0.0.
When’s the space station over?
ALLISONThe next visible space station pass is 7:42 PM. It rises in the WSW, climbs to 61°, and sets in the NE.
Example answers. Yours are worked out for where you are, right now.
Plate IIFind mode
A gold path to anything in the sky.
Pick a planet, a star, a galaxy or the space station and a gold path runs from the middle of your screen to it. Turn and tilt to follow. Your iPhone taps faster as you close in, so you can keep your eyes on the sky.
- Anything in the catalog: 99,000 stars, planets and their major moons, 846 nebulae, clusters and galaxies.
- When it is below the horizon, the path points to where it is under the ground and ALLISON tells you when it rises.
- Gold means ALLISON. Nothing else in the app uses it, so the path is never lost among the stars.
Plate IIIThe atlas look
Drawn like a star atlas, alive like the sky.
Deep indigo, silver hairline figures and a serif you would find on an old celestial chart. Centre a constellation and its classic illustration fades in behind the stars.
- 99,000
- Hipparcos stars, in their true colours
- 88
- constellations with art by Johan Meuris
- 846
- deep-sky objects: every Messier and the bright NGC and IC
- Live
- the ISS and bright satellites, with pass predictions
The Sun, the Moon (a real NASA photograph, lit to tonight’s phase), the planets and the major moons of Jupiter and Saturn. Star lore from Chinese, Norse, Māori and Hawaiian skies. Time travel to any night, red night mode for dark-adapted eyes, compass calibration, field-of-view circles for your telescope, binoculars or camera, and sky photos with labels on.
Plate IVTonight & events
Know what’s worth going out for.
Tonight puts the Moon, when it gets properly dark, the planets after dusk and the best targets right now on one screen. Tap the gold star next to any of them and the path takes you there.
The sky calendar looks ahead: Moon phases, meteor showers, conjunctions, oppositions and every eclipse from 2026 to 2035. Turn on alerts for a reminder the evening before.
Plan the night
- Photo planner for Milky Way core windows
- ISS and bright-satellite pass predictions
- Time travel to any date and hour
- Sky forecast and light-pollution map (Pro)
Plate VOn screen
See it before you look up.
Plate VIALLISON Pro
The sky is free. Pro is for regulars.
Everything above is free, with no ads, for good. ALLISON Pro adds the tools for people who go out often, and never takes anything away.
- Observing log and lists. Record what you saw, with what, and from where. Build lists to work through. Synced with iCloud.
- Sky forecast. The nights ahead with a stargazing score for each, and a light-pollution map.
- Live Activities. The next ISS pass counting down on your Lock Screen and Dynamic Island.
Yearly
$29.99
1-week free trial
Monthly
$4.99
cancel any time
Lifetime
$79.99
pay once
Prices in US dollars; the App Store shows your local price. Subscriptions renew automatically until cancelled in Settings.
Plate VIIEverywhere you look up
iPhone, iPad, Mac and Apple Watch.
iPhone
Hold it up to the sky. Ask, find, and follow.
iPad
The whole atlas on a big screen, for planning the night.
Mac
Plan sessions, browse the calendar and read up at your desk.
Apple Watch
Tonight on your wrist, with Moon and Tonight complications.
Widgets
The Moon and Tonight on your Home Screen and Lock Screen.
Siri & Shortcuts
Ask Siri what’s up tonight, the Moon’s phase, or where to find a planet.
iCloud
Your log, lists and equipment on all your devices.
Live Activities
ISS passes on the Lock Screen, with ALLISON Pro.
Plate VIIIPrivacy
Your sky stays yours.
No account. No ads. No tracking. Your location is used on your iPhone to work out the sky above you, and that’s where it stays.
- On-device AI. Questions to ALLISON are answered by Apple Intelligence on your device.
- No account. There is nothing to sign up for. Your observing log syncs through your own iCloud.
- Optional sharing. “What others are looking at” shares only which object you found, nothing about you. Switch it off in Settings.
Plate IXQuestions
Questions, answered.
Is ALLISON free?
Yes. The download is free and the whole sky, Find, ALLISON, the events calendar, alerts, tours, satellites and widgets are free with no ads. ALLISON Pro is optional: $29.99 a year with a 1-week free trial, $4.99 a month, or $79.99 once. It adds an observing log and lists, the sky forecast and Live Activities, and never takes anything away.
How do you say it?
“Allison.” It is written ALLISON because it is an acronym: Augmented Live Lens for Identifying Stars, Orbits & Nebulae.
Does it work without a signal?
Yes. The star catalog, constellation art, deep-sky objects and the encyclopedia are in the app, and ALLISON answers on your device with Apple Intelligence, so it works at a dark site with no bars. Satellite orbits and the sky forecast need a connection to refresh; the app needs to be online once to load satellite orbits.
Which devices can talk to ALLISON?
Asking in your own words uses Apple Intelligence on devices that support it. On other devices ALLISON still understands common phrasings like “Where’s Saturn?” and “What’s up tonight?”, and everything else in the app works the same.
Does it track me?
No. There are no accounts, no ads and no tracking. Your location stays on your device. See the privacy policy for the few things that ever leave it.
Can it find the International Space Station?
Yes. ALLISON shows the ISS and bright satellites live, predicts visible passes for where you are, and the gold path leads you to them. With ALLISON Pro, a Live Activity counts down to the next pass on your Lock Screen.
Does it control telescopes?
Not yet. It draws field-of-view circles for your telescopes, binoculars and cameras so you can see what will fit in the eyepiece or frame.
More on the support page.
Go outside tonight.