1. Home
  2. Topics
  3. Free Astronomy Apps

Best Free Astronomy Apps

250+ iOS apps & games curated and reviewed

4.7 avg rating
20 free apps & games
Updated August 2026

If you already know Night Sky, this is the deeper bench. 250+ free astronomy apps for iPhone, all reviewed and ranked by user rating, recency, and download trend as of August 2026.

Compare top Free Astronomy Apps (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
5Star ChartStar ChartFree4.6★ (25K)NoYesAug 2026
6PlanetsPlanetsFree4.5★ (969)NoNoAug 2026
7NASANASAFree4.8★ (64K)NoNoAug 2026
8Sky Tonight - Stargazing GuideSky Tonight - Stargazing GuideFree4.8★ (75K)YesYesAug 2026

Top Picks for Free Astronomy Apps

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
#12in 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
#10in 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
#76in 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 Free Astronomy Apps 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
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
6
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
7
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
8
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
9
Astrarium Sky Map
Astrarium Sky Map
Astrarium Sky Map
Plan your night sky
Free
📚 Education
(0)
10
AstroFinder
AstroFinder
AstroFinder
Telescope pointing solved
Free
📚 Education
(0)
11
Cosmic Origins
Cosmic Origins
Cosmic Origins
Explore Space & Astronomy
Free
📚 Education
(0)
12
Voyage: Deep Space
Voyage: Deep Space
Voyage: Deep Space
A quiet cosmic companion
Free

This app uses a focus timer that visualizes concentrated time as a journey through deep space. As you complete focus sessions, you'll make cosmic discoveries, grow a star chart, and cultivate genesis trees. It's designed for focused work, study, or creative practice without gamifying productivity.

Focus timer with deep-space progressionCosmic discoveries collected over timeStar chart and journal views
🎮 Games
(6)
free with in-app purchases
13
AstroSeekerApp
AstroSeekerApp
AstroSeekerApp
by Aykut Kilic
Free
🌟 Lifestyle
(0)
14
OnStep Controller - GDA
OnStep Controller - GDA
OnStep Controller - GDA
by Gray Digital Arts LLC
Free
🔧 Utilities
(0)
15
Clear Outside
Clear Outside
Clear Outside
by First Light Optics
Free

Get detailed, reliable weather forecasts specifically for astronomers, focusing on cloud cover. Track astronomical events like moon and sun times, darkness periods, and ISS passes. Save multiple locations for quick access to crucial data.

Seven-day hourly cloud cover forecastsRegular weather data (wind, rain, temperature)Moon and sun rise/set times
☀️ Weather
(6)
free
16
Light Pollution Map - Darkest
Light Pollution Map - Darkest
Light Pollution Map - Darkest
Dark Sky & Bortle Map
Free
🔍 Reference
(0)
17
SUNSCAN
SUNSCAN
SUNSCAN
by STAROS
Free
🔧 Utilities
(0)
18
Astronomy & Space News
Astronomy & Space News
Astronomy & Space News
Latest NASA, Astrobiology News
Free

Stay updated with the latest astronomy and space exploration news. Discover exoplanet findings, astrobiology advancements, and the search for extraterrestrial life. Enjoy stunning space photos and educational videos from leading space agencies.

Latest astronomy newsSpace exploration updatesExoplanet discovery
📡 News
(2.8K)
free with in-app purchases
19
Planet Finder: Sky Tonight
Planet Finder: Sky Tonight
Planet Finder: Sky Tonight
Star Map, Stargazing Guide
Free

This app transforms your phone into a live celestial guide. Point it at the sky to identify planets, stars, and constellations with an on-screen pointer. It provides real-time astronomical data, a sky calendar, and detailed information on celestial objects.

Live sky pointerCelestial object identificationRise, transit, and set times
🔍 Reference
(1)
free with in-app purchases
20
GalacticalMap
GalacticalMap
GalacticalMap
AR Sky Map & Space Tracker
Free
📚 Education
(0)

Looking for something similar to free astronomy apps?

Explore related topics

astronomy app free daily

FAQ about Free Astronomy Apps

What are the best free astronomy apps for iPhone?
Night Sky tops our free astronomy apps 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+ free astronomy apps 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

free astrology apps