CelestQuest
AR Star Map & Night Sky Guide
Only for iPhone
Free
iPhone
Hold your iPhone up to the sky: CelestQuest names the stars, planets and constellations, leads you to the one you ask for, and dives in for a close-up.
Hold your iPhone up to the sky and CelestQuest shows you what's there: the stars, planets, constellations, the Moon and the space stations passing over, lined up with the real sky through your camera.
POINT AND KNOW
• Rings mark the real stars and planets your camera can see, with their names beside them
• Put anything in the centre circle to see what it is, how far away it is, and how long its light took to reach you
• Constellation lines join the stars without covering them up
• Works by day too: see where the Moon, planets and stars are while daylight hides them
ASK "WHERE IS SATURN?"
• Type or say what you're looking for: "Where is Venus?", "the North Star", "Big Dipper"
• An arrow and plain words lead you there: "turn left 40°, then tilt up 20°"
• Below the horizon? It tells you when and where it comes up
DIVE IN
• Hold something in the circle and the view dives in for a close-up: planets turning with their moons going round, stars in their own colours, galaxies in their own shapes
• A little map shows where it sits in the Milky Way, and how big it is next to something you know
TAKE THE SKY TOUR
• A guided trip through the best things up right now, read aloud
• It starts near where you're pointing
LISTEN TO THE SKY
• Hear the sky as a music box: each star rings as it crosses the meridian
• "Play tonight" turns the whole night, dusk to dawn, into a short song you can save
MADE FOR DARK SKIES
• Works offline: the sky is worked out on your iPhone
• Night vision turns the names, maps and buttons red to help keep your eyes dark-adapted
• Positions include the air's refraction, so things near the horizon sit where you really see them
• Compass a little off? Line up on the Moon or a bright star and the names sit right on the real sky
PRIVATE
No accounts, no ads, no tracking. Your location never leaves your iPhone.
Star data: HYG Database (CC BY-SA 4.0). Constellations: d3-celestial. Satellite orbits: CelesTrak.
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The developer, Mark Kaminsky, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Mark Kaminsky
- Size
- 86.3 MB
- Category
- Education
- Compatibility
Requires iOS 18.1 or later.
- iPhone
Requires iOS 18.1 or later.
• iPhone 6S
• iPhone 6S Plus
• iPhone SE (1st generation)
• iPhone 7
• iPhone 7 Plus
• iPhone 8
• iPhone 8 Plus
• iPhone X
• iPhone XS
• iPhone XS Max
• iPhone XR
• iPhone 11
• iPhone 11 Pro
• iPhone 11 Pro Max
• iPhone SE (2nd generation)
• iPhone 12 mini
• iPhone 12
• iPhone 12 Pro
• iPhone 12 Pro Max
• iPhone 13 Pro
• iPhone 13 Pro Max
• iPhone 13 mini
• iPhone 13
• iPhone SE (3rd generation)
• iPhone 14
• iPhone 14 Plus
• iPhone 14 Pro
• iPhone 14 Pro Max
• iPhone 15
• iPhone 15 Plus
• iPhone 15 Pro
• iPhone 15 Pro Max
• iPhone 16
• iPhone 16 Plus
• iPhone 16 Pro
• iPhone 16 Pro Max
• iPhone 16e
• iPhone 17 Pro
• iPhone 17 Pro Max
• iPhone 17
• iPhone Air
• iPhone 17e
• iPhone 18 Pro
• iPhone 18 Pro Max
• iPhone Duo
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 Mark Kaminsky