Comparison

Star Chart vs Constellation Map mobile

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Star Chart

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.

Highlights
  • Augmented reality sky identification
  • 3D simulation of the visible universe
  • Real-time celestial object tracking
  • Time shift to view past/future sky
  • Explore planets, moons, and sun
  • View constellations and deep sky objects
  • Detailed object information
Features
Read full description

*** Star Chart is now FREE! *** The top educational & augmented reality astronomy app - download and find out why over 20 million people use Star Chart! You can now have a virtual star chart in your pocket. Look through the eyes of your iPhone or iPad* to see a high-tech window into the whole visible universe. All you have to do is point your AR enabled device* at the sky and Star Chart will tell you exactly what you are looking at. Using state of the art GPS technology, an accurate 3D simulation of the visible universe, and a great deal of technical wizardry, Star Chart calculates – in real time - the current location of every star, planet and moon visible from Earth and shows you precisely where they are; even in broad daylight! Want to know what that bright star is called? Point your device* at it – you might just find out it’s a planet! Want to know what the night sky looks like to people on the other side of the earth? Well just point your device down! Want to know where your star sign is in the sky? Star Chart will tell you all this and more. Star Charts features include: - Just point and view. When you hold your device up to the sky, Star Chart will automatically start tracking your movements to match the sky *. - Alternatively, look around the sky using finger gestures – perfect for armchair astronomers! - In a single app of less than 30MB, Star Chart dynamically scales its visuals and capabilities across all iOS devices to meet the high end capabilities of a retina display iPad while also running smoothly on the earliest iPhones and iPods. - Accurately depicts all the visible stars of the northern and southern hemispheres - a total of approximately 120,000 stars! - Fly to and explore all the planets of the solar system, their moons and the sun all rendered in beautiful 3D with state of the art visual effects. - Using the powerful Time Shift feature, simply tap the time button and smoothly shift up to 10,000 years forward or backward in time. - Displays all 88 constellations, with constellation imagery based on the beautiful artwork by 17th century astronomer Johannes Hevelius. - Includes the complete Messier catalogue of 110 exotic deep sky objects. - Tap on anything in the sky and get the facts on what you are looking at, including distance and brightness. - Very powerful zoom function, lets you view the sky in extra detail, using intuitive finger gestures. - Fully configurable. Star Chart displays only the sky objects that you are interested in. - Allows you to view the sky underneath the horizon. So now you can see where the sun is, even at night! - Manually set your location to find out what the sky looks like from anywhere in the world. - Supports dynamic device orientation viewing. Allows you to view the night sky whilst holding your iPhone/iPad* at any angle. So point your iPhone/iPad* at the sky and see what's out there! ------------ * Augmented Reality mode is available on devices that include a built-in compass. Manual scrolling is supported on all other devices. ------------ Star Chart is published by Escape Velocity Ltd and developed by Escapist Games Ltd. We update Star Chart regularly, so please send us your feedback and feature requests to starchart@escapistgames.com. And thanks for all your feedback so far! Like us on Facebook: www.facebook.com/starchart Follow Star Chart on Twitter: StarChartApp

About

Constellation Map mobile

Explore the night sky by pointing your device upwards. Identify stars, constellations, and planets with detailed information. View celestial bodies below the horizon and track planetary orbits.

Highlights
  • Identify stars, constellations, and planets
  • View celestial bodies below the horizon
  • Track planetary orbits
  • Display over 100 bright stars and objects
  • Zoom and pan with touch gestures
  • Toggle display of constellation lines and names
Features
Read full description

Simply point your device towards the sky and this application will display the names of the stars, constellations and planets. You can check the orbital position of the planet in the solar system on a separate screen. You can also display stars below the horizon. You can display the names of about 100 bright stars, constellations, ecliptic, celestial equator, Deep Sky Objects, ISS, Celestial pole, and so on. You can enlarge or reduce the display by spreading or narrowing (pinch operation) with two fingers. Toggle display / non-display of constellation line, name etc. with double touch.

Screenshots

Star Chart4 screens
Constellation Map mobile4 screens

Verdict

The call

The clearest difference is ads: Star Chart at none against Constellation Map mobile's shown. Star Chart also leads on ratings volume (25K vs 4.6K) and iOS requirement (7.0 vs 13.0). On price, rating, review sentiment and update cadence there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Star Chart sells 7 one-off in-app purchases and Constellation Map mobile sells 1 in-app purchase, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Star Chart against 4.7 for Constellation Map mobile. That said, the two scores are not equally well evidenced: Star Chart has 25K ratings behind it against 4.6K, so its average is the more settled of the two. Written reviews are what separate them: 85% of Star Chart's written reviews are positive against 86% of Constellation Map mobile's.

UpkeepUpdate frequency

Star Chart ships an update fortnightly, Constellation Map mobile every 3 weeks. The most recent releases landed on October 15, 2026 and October 14, 2026 respectively.

Scorecard3 real differences · 7 level
Star Chart versus Constellation Map mobile: the parameters behind the verdict, then further details
ParameterStar ChartConstellation Map mobile
PriceFreeFree
Rating4.6 (25K ratings)4.7 (4.6K ratings) — better
Positive reviews85.0% of reviews86.4% of reviews — better
Number of ratings25K — better4.6K
Update frequencyFortnightly — betterEvery 3 weeks
AdsNo — betterYes
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS7.0 — better13.0
Further details — not scored
Size28 MB39 MB
Age rating4+4+
DeveloperESCAPE VELOCITY LIMITEDsiranet GK

Customer experience

Star Chart

All ratings24,838 ratings
Positive92.2%
Neutral3.2%
Negative4.6%
Written reviews1,947 reviews
Positive85.0%
Neutral5.2%
Negative9.8%

Constellation Map mobile

All ratings4,603 ratings
Positive94.1%
Neutral3.5%
Negative2.4%
Written reviews455 reviews
Positive86.4%
Neutral3.3%
Negative10.3%

User reviews

Star Chart

From 25K App Store ratings

What we love

  • 💫 Impressive visuals
  • 🌌 Comprehensive celestial information
  • 🔍 Helpful for learning constellations
  • 🌍 Accurate location tracking
  • 🌠 Enjoyable stargazing experience

Room to improve

  • 🐛 Frequent crashes and bugs
  • ⚠️ Outdated and unsupported
  • 💰 Expensive in-app purchases
  • 🗺️ Inaccurate mapping and calibration
  • 🔍 Missing key celestial objects

Constellation Map mobile

From 4.6K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Accurate star/planet mapping
  • 💡 Helpful for beginners and experts
  • 🌟 Great for stargazing and astrophotography
  • 🌙 Useful moon phase and solar orbit information

Room to improve

  • 🐛 Alignment/calibration issues
  • 🔀 Reversed/incorrect orientation
  • 🔍 Difficulty locating specific celestial objects
  • 💻 Compatibility problems on some devices

Bugs and requests

Star Chart

Reported bugs

5 issues
  • App crashes on launch
  • Purchased upgrades not working
  • Incorrect positioning of celestial objects
  • GPS location not detected properly
  • Scrolling and navigation issues

Requested features

5 requests
  • Update app with latest celestial objects
  • Improve stability and reduce crashes
  • Offer more affordable in-app purchases
  • Enhance mapping and calibration accuracy
  • Add search functionality for specific stars/planets

Constellation Map mobile

Reported bugs

3 issues
  • App crashes on opening
  • Incorrect positioning of sun, moon, and planets
  • Constellation names disappearing or not displaying properly

Requested features

4 requests
  • Add option to view constellations from inside the celestial sphere
  • Improve search functionality to easily find planets, stars, and galaxies
  • Provide more detailed information and descriptions for celestial objects
  • Add ability to calibrate the app to match the actual sky view

In-app purchases

7 purchases

Star Chart

One-time7
  • Comets$2.99
  • Meteor Showers$4.99
  • Extended Solar System$4.99
Show 4 more
  • Enhanced Constellations$4.99
  • Satellites$4.99
  • Extended Star Catalog$9.99
  • Enhanced Messier Catalog$9.99
1 purchases

Constellation Map mobile

Subscriptions1
  • Remove ads 1 month$1.991 Month

Questions

Is Star Chart free?
Star Chart is free to download, with in-app purchases available.
Is Constellation Map mobile free?
Constellation Map mobile is free to download, with in-app purchases available.
Which has better reviews, Star Chart or Constellation Map mobile?
Constellation Map mobile is rated higher. Star Chart averages 4.6 out of 5 from 25K ratings, while Constellation Map mobile averages 4.7 from 4.6K ratings.
Do Star Chart or Constellation Map mobile have ads?
Constellation Map mobile shows ads; Star Chart does not.
Which is updated more often, Star Chart or Constellation Map mobile?
Star Chart ships an update fortnightly, and Constellation Map mobile every 3 weeks. Most recently, Star Chart was updated on October 15, 2026 and Constellation Map mobile on October 14, 2026.

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