Comparison

Birth Light Astronomy 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

Birth Light Astronomy

Explore the cosmos and see the stars as they appeared on any date, including your birthday. This app uses your location and augmented reality to guide you to specific stars visible in the night sky.

Highlights
  • View stars from the past
  • Augmented reality sky view
  • Star rise and set times
  • Catalog of over 5000 stars
  • Location-based visibility
  • Customizable dates
Features
Read full description

Birth Light is a simple backyard astronomy app that makes it easy for kids and adults to see back in time by looking at the stars. The stars are so far away that it takes years for their light to reach Earth. If you look at the right star at the right time, you can see the way it looked on the day you were born! Birth Light is an app that shows you when and where to look. Its catalog of over 5000 stars includes every naked-eye-visible star within a thousand light-years of Earth. It uses your location to determine which stars will be visible, and when they rise and set. And it has an augmented-reality mode that shows you exactly where in the sky to look for your birth star. Start by entering your birthday (or any date you want) and you'll see a list starting with the next star to enter your light cone. Tap a star and you'll see basic data about it, along with a scrollable diagram showing when it will rise and set each night. Next tap "Show me in the sky" and you'll see an augmented-reality view of the sky right now, with a helpful arrow that points you toward the star you've selected. Just point your phone until you see the star you're looking for! This app requires GPS.

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

Birth Light Astronomy3 screens
Constellation Map mobile4 screens

Verdict

The call

The clearest difference is in-app purchases: Birth Light Astronomy at none against Constellation Map mobile's 1. Birth Light Astronomy also leads on ads (none vs shown) and rating (5.0 vs 4.7). Constellation Map mobile's advantage is ratings volume (4.6K vs 2) and update cadence (every 3 weeks vs every 4 months). On price and device support 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. Constellation Map mobile sells 1 in-app purchase, starting at $1.99 per month. Birth Light Astronomy asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Birth Light Astronomy holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: Constellation Map mobile has 4.6K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Birth Light Astronomy's written reviews are positive against 86% of Constellation Map mobile's.

UpkeepUpdate frequency

Birth Light Astronomy ships an update every 4 months, Constellation Map mobile every 3 weeks. The most recent releases landed on October 8, 2026 and October 18, 2026 respectively.

Scorecard8 real differences · 2 level
Birth Light Astronomy versus Constellation Map mobile: the parameters behind the verdict, then further details
ParameterBirth Light AstronomyConstellation Map mobile
PriceFreeFree
Rating5.0 (2 ratings) — better4.7 (4.6K ratings)
Positive reviews100.0% of reviews — better86.4% of reviews
Number of ratings24.6K — better
Update frequencyEvery 4 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better13.0
Further details — not scored
Size21 MB39 MB
Age rating4+4+
DeveloperRobert Tempchinsiranet GK

Customer experience

Birth Light Astronomy

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Constellation Map mobile

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

Bugs and requests

Birth Light Astronomy

Not enough reviews yet to summarise bugs or requests.

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

None

Birth Light Astronomy

No in-app purchases

1 purchases

Constellation Map mobile

Subscriptions1
  • Remove ads 1 month$1.991 Month

Questions

Is Birth Light Astronomy free?
Birth Light Astronomy is free to download, with no in-app purchases.
Is Constellation Map mobile free?
Constellation Map mobile is free to download, with in-app purchases available.
Which has better reviews, Birth Light Astronomy or Constellation Map mobile?
Birth Light Astronomy is rated higher. Birth Light Astronomy averages 5.0 out of 5 from 2 ratings, while Constellation Map mobile averages 4.7 from 4.6K ratings.
Do Birth Light Astronomy or Constellation Map mobile have ads?
Constellation Map mobile shows ads; Birth Light Astronomy does not.
Which is updated more often, Birth Light Astronomy or Constellation Map mobile?
Birth Light Astronomy ships an update every 4 months, and Constellation Map mobile every 3 weeks. Most recently, Birth Light Astronomy was updated on October 8, 2026 and Constellation Map mobile on October 18, 2026.

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