1. Home
  2. Topics
  3. Astronomy App Free

Best Astronomy App Free

250+ iOS apps curated and reviewed

4.6 avg rating
20 free apps
Updated August 2026

Out of 250+ astronomy app free on iOS, 20 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Compare top Astronomy App Free (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Night SkyNight SkyFree4.7★ (492K)NoYesAug 2026
2Sky GuideSky GuideFree4.8★ (369K)NoYesAug 2026
3SkyView® LiteSkyView® LiteFree4.5★ (19K)YesYesAug 2026
4Stellarium Mobile - Star MapStellarium Mobile - Star MapFree4.8★ (36K)NoYesAug 2026
5NASANASAFree4.8★ (64K)NoNoAug 2026
6Sky Tonight - Stargazing GuideSky Tonight - Stargazing GuideFree4.8★ (75K)YesYesAug 2026
7Scan the SkyScan the SkyFree5.0★ (2)NoNoJun 2026
8Star Tracker Lite-Live Sky MapStar Tracker Lite-Live Sky MapFree4.6★ (2.1K)YesYesAug 2026

Top Picks for Astronomy App Free

Night Sky#1

Night Sky by iCandi Apps Ltd.

Guide to Stars,Comets,Meteors
Editor's Choice
🔍 Reference
4.7😊(492K ratings)
FreeIn-App Purchases
#4in Reference
Night Sky screenshot 1
Night Sky screenshot 2
Night Sky screenshot 3
Night Sky screenshot 4
Night Sky screenshot 5
Night Sky screenshot 6

Explore the cosmos with an AI-powered planetarium. Identify stars, planets, and satellites by pointing your device at the sky. Discover celestial objects in augmented reality and share your stargazing experiences with others.

What We Love

  • 🌟 Excellent app for stargazing and learning about the night sky
  • 🔭 Detailed information on celestial objects, satellites, and space events
  • 🌍 Accurate mapping of the sky to real-world locations
  • 🎨 Beautiful visuals and animations

Room to Improve

  • 💰 Frequent prompts to upgrade to premium subscription
  • 🔌 Concerns about high battery consumption
  • 🤔 Calibration and alignment issues with the AR features
Sky Guide#2

Sky Guide by Fifth Star Labs LLC

Star gaze constellation finder
Strong Contender
🔍 Reference
4.8😊(369K ratings)
FreeIn-App Purchases
#1in Reference
Sky Guide screenshot 1
Sky Guide screenshot 2
Sky Guide screenshot 3
Sky Guide screenshot 4
Sky Guide screenshot 5
Sky Guide screenshot 6

Identify stars, constellations, planets, and satellites in real-time by holding your device overhead. Explore celestial bodies with AR overlays, track satellites like the ISS, and travel through time to view past and future astronomical events. Perfect for both novice and experienced stargazers.

What We Love

  • 🌟 Stunning visuals and graphics
  • 📚 Wealth of information on celestial objects
  • 🧭 Accurate and responsive compass/AR features
  • 🌌 Immersive stargazing experience

Room to Improve

  • 🧭 Occasional compass/location calibration issues
  • 💰 Subscription model limits access to some features
  • 🌍 Lack of support for certain regions/locations
SkyView® Lite#3

SkyView® Lite by Terminal Eleven LLC

Explore the Universe
Worth Considering
📚 Education
4.5😊(19K ratings)
FreeAdsIn-App Purchases
#12in Education
SkyView® Lite screenshot 1
SkyView® Lite screenshot 2
SkyView® Lite screenshot 3
SkyView® Lite screenshot 4

Identify stars, constellations, satellites, and more by simply pointing your device at the sky. This augmented reality app makes stargazing accessible to everyone, day or night. Explore celestial paths and even travel through time to view the sky on different dates.

What We Love

  • 🌟 Accurate star and planet tracking
  • 👍 Easy to use and navigate
  • 🔭 Helpful for learning about the night sky
  • 💫 Engaging and educational for all ages

Room to Improve

  • 🐛 Compass/location issues causing inaccurate positioning
  • 🔍 Limited free features, many paid upgrades
  • 🤔 Confusing for some users to understand how it works

More Astronomy App Free apps to explore

4
Stellarium Mobile - Star Map
Stellarium Mobile - Star Map
Stellarium Mobile - Star Map
Stargazing & planet finder
Free

Explore the night sky with a real-time planetarium. Identify stars, planets, constellations, and satellites by simply pointing your phone. Offers detailed astronomical data and cultural constellation interpretations.

Real-time sky simulationIdentify stars, planets, satellitesConstellation shapes and illustrations
📚 Education
(36K)
free with in-app purchases
5
NASA
NASA
NASA
by NASA
Free

Explore the universe with access to live and on-demand NASA+ videos, a vast collection of stunning images, and the latest mission news. Discover interactive augmented reality experiences and track the International Space Station's path.

NASA+ video streaming21,000+ NASA imagesLatest NASA news
📚 Education
(64K)
free
6
Sky Tonight - Stargazing Guide
Sky Tonight - Stargazing Guide
Sky Tonight - Stargazing Guide
Star Constellation Finder App
Free

Explore the night sky with this astronomy app. Identify celestial objects, discover upcoming astronomical events, and track their positions. Customize your view, set reminders, and access detailed information for a personalized stargazing experience.

Real-time interactive sky mapAugmented reality modeTime Machine for past/future positions
🔍 Reference
(75K)
free with in-app purchases
7
Scan the Sky
Scan the Sky
Scan the Sky
Live Astronomy Tracker
Free

Discover celestial events and track satellites with real-time data. Explore light pollution maps, meteor shower indexes, and constellation guides. Get space weather alerts and cloud cover forecasts for optimal stargazing.

Light pollution scouting mapMeteor shower index and alertsISS live tracking
📚 Education
(2)
free
8
Star Tracker Lite-Live Sky Map
Star Tracker Lite-Live Sky Map
Star Tracker Lite-Live Sky Map
Night stars guide & tracker
Free

Explore the universe by pointing your device at the sky. Identify stars, constellations, and deep sky objects in real-time. Features offline data, a 3D compass in AR mode, and detailed graphics for an immersive stargazing experience.

Offline celestial dataIdentify stars, constellations, planetsAugmented reality compass
🔍 Reference
(2.1K)
free with in-app purchases
9
Star Chart
Star Chart
Star Chart
by ESCAPE VELOCITY LIMITED
Free

Explore the cosmos with this augmented reality astronomy app. Point your device at the sky to identify stars, planets, and constellations in real-time. Discover celestial bodies and their positions, even traveling through time to view the universe's past and future.

Augmented reality sky identification3D simulation of the visible universeReal-time celestial object tracking
📚 Education
(25K)
free with in-app purchases
10
Star Walk 2 Plus: Live Sky Map
Star Walk 2 Plus: Live Sky Map
Star Walk 2 Plus: Live Sky Map
Astronomy Guide for Stargazing
Free

Explore the cosmos with a real-time sky map. Point your device to identify stars, planets, and constellations. Discover celestial events and learn about the universe with detailed information and 3D models.

Real-time sky map3D constellation modelsTime machine feature
📚 Education
(95K)
free with in-app purchases
11
Sky Map – Live Star Tracker
Sky Map – Live Star Tracker
Sky Map – Live Star Tracker
Stargazing, Planets, Night Sky
Free
📚 Education
(0)
12
Planets
Planets
Planets
by Q Continuum
Free

Explore the solar system with a 3D guide. Discover planets, moons, and celestial events with interactive sky views and visibility information. Perfect for budding astronomers.

3D solar system guide2D sky view3D planetarium sky view
🔧 Utilities
(969)
free
13
StarWizard: Astronomy Sky Map
StarWizard: Astronomy Sky Map
StarWizard: Astronomy Sky Map
Stargazing, Star Map & Planets
Free

Explore the night sky in real-time with augmented reality. Identify stars, planets, constellations, and the ISS. Features an AI guide for questions and offline celestial navigation lessons.

Real-time AR sky identificationOffline sky mapAI-powered celestial questions
📚 Education
(1)
free
14
Star Map: Sky & Star Finder
Star Map: Sky & Star Finder
Star Map: Sky & Star Finder
Stargazing, Planets & AR Sky
Free
☀️ Weather
(0)
15
Star Walk：Find Stars & Planets
Star Walk：Find Stars & Planets
Star Walk：Find Stars & Planets
Night Sky Guide - Star Map AR
Free

Explore the night sky with an interactive guide that identifies stars, planets, and constellations in real-time using augmented reality. Discover over 200,000 celestial bodies with detailed information and track astronomical events.

Real-time night sky mapAugmented reality viewExplore 200,000+ celestial bodies
📚 Education
(25K)
free with in-app purchases
16
NAPA - Star Map
NAPA - Star Map
NAPA - Star Map
by National Astronomical Research Institute of Thailand (Public Organization)
Free

Explore the night sky with this astronomy and planetarium app. Identify stars, constellations, and planets by pointing your device at the sky. Plan future observations by adjusting the time and date.

Point and observe celestial objectsStar map functionalityTime adjustment for observation planning
🔧 Utilities
(3)
free
17
Space.com: Space News
Space.com: Space News
Space.com: Space News
Your guide to the galaxy
Free

Stay updated with the latest in space exploration, astronomy, and science fiction. Get exclusive launch coverage, stunning photos, expert guides, and personalized news feeds. Save articles for later and enjoy a seamless mobile reading experience.

Exclusive launch coverageAstronomy discoveriesSkywatching guides
📰 Magazines & Newspapers
(2)
free with in-app purchases
18
FinderCam with Plate Solving
FinderCam with Plate Solving
FinderCam with Plate Solving
Point telescope accurately!
Free
$1.99 | 100% OFF

This app helps you find celestial objects in the night sky using your device's camera. It identifies stars for accurate alignment, guiding you to targets even with light pollution or partial clouds. Advanced features assist with telescope and binocular use for deep sky object hunting.

Night sky object identificationPlate solving for accurate alignmentWorks with light pollution and clouds
📷 Photo & Video
(2)
free
19
Cedar Aim
Cedar Aim
Cedar Aim
Aim your telescope precisely
Free

This app connects to a specialized finder device to help you precisely locate celestial objects with your telescope. It uses star pattern recognition for real-time position detection and provides intuitive guidance for fast object finding. Enjoy seamless operation without an internet connection.

Real-time telescope position detectionFast star pattern recognitionIntuitive directional guidance
📚 Education
(1)
free
20
Astro Skies
Astro Skies
Astro Skies
by DAVID ANDRES FERNANDEZ PEREZ
Free

Plan your stargazing sessions with this astronomy app. It provides real-time observing conditions, weather forecasts, lunar information, and visible celestial objects to help you make the most of your nights under the stars.

Observing score based on sky and weatherDetailed weather and seeing conditionsMoon phase and astronomical darkness
📚 Education
(1)
ad-supported

Looking for something similar to astronomy app free?

Explore related topics

astronomy app free daily

FAQ about Astronomy App Free

What is the best astronomy app free for iPhone?
Night Sky tops our astronomy app free ranking as of August 2026, with a 4.7-star average from 492K App Store ratings, and it's free to download.
Night Sky has no ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 250+ astronomy app free on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
Night Sky is an AI-powered personal planetarium that helps you identify stars, planets, constellations, and satellites by simply pointing your device at the sky. It offers augmented reality features to explore celestial objects and provides detailed astronomical information.
Key features include real-time identification of celestial objects, augmented reality exploration, an AI Super Astronomer for answering space-related questions (with subscription), customizable Sky Tags for saving and sharing observations, and Connected Stargazing for shared experiences with friends.

Related searches

sky view & astronomy app free