Comparison

Galaxy Map vs Human Heart

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

Head to head
About

Galaxy Map

Explore the Milky Way and Andromeda galaxies in an interactive 3D map. Discover nebulae, supernovae, and planets, with stunning visuals based on NASA data. Ideal for education and space enthusiasts.

Highlights
  • Interactive 3D galaxy map
  • Explore nebulae and supernovae
  • Fly through planetary atmospheres
  • Land on planets
  • Based on NASA data
  • Available in 100+ languages
Features
Read full description

The galaxy map is an interactive map of the Milky Way galaxy, Andromeda and their satellite galaxies. Explore the Orion Arm's nebulae and supernovae from the comfort of your spaceship. Fly through the atmosphere of Mars and many other planets and you can even land on them. Discover the galaxy in a stunning three dimensional map based on NASA's artistic impression of the Milky Way galactic structure. Photos are taken by NASA spacecraft and ground based telescopes like Hubble Space Telescope, Chandra X-Ray, Herschel Space Observatory and the Spitzer Space Telescope. This interactive 3D map is excellent for teachers to use for instruction, and it is a great astronomy resource for students to explore the Milky Way galaxy and space as they learn more about the universe we live in. Available in over 100 languages! You can also From the outskirts of the galaxy, in the Norma-Outer spiral arm to the galactic center's supermassive black hole Sagittarius A*, discover a galaxy full of amazing facts. Notable structures included: the Pillars of Creation, Helix Nebula, the Engraved Hourglass Nebula, the Pleiades, the Orion Arm (where the solar system and the Earth are located) with its Orion belt. Check out neighboring dwarf galaxies such as Sagittarius and the Canis Major Overdensity, stellar streams as well as internal galactic components such as a variety of nebulae, star clusters or supernovae. Explore space and get a little closer to our wonderful universe with this awesome astronomy app! The Galaxy Map requires internet access to retrieve information from the wiki.

About

Human Heart

Explore a 3D, anatomically accurate human heart with augmented reality. Learn about its structure, function, and the cardiac cycle through interactive exploration, detailed pins, and adjustable beating rates.

Highlights
  • 3D anatomical heart model
  • Augmented reality view
  • Cross-section exploration
  • Interactive pins with descriptions
  • Blood flow visualization
  • Adjustable beating rate
Features
Read full description

The human augmented reality heart is a unique application designed to support and enhance the learning of the structure and function of the heart as part of the Open University modules, or as a stand-alone app. The app consists of an anatomically accurate heart which can be viewed in three dimensions, in cross section and also as a ‘zoomed in’ virtual exploration. The app has a range of functions to help develop the learning and understanding of how the heart beats and the cardiac cycle. By selecting ‘Show pins’ all the major anatomical structures of the human heart are identified and selecting a pin provides the name and description. There is the option to show the blood flow through the heart. All the options are available as a stationary or beating heart, the rate of which can be fully adjusted aiding the understanding of the mechanical events of the heartbeat. The app will help students at all educational levels to develop and extend their knowledge and understanding of the heartbeat. You can access the AR trigger image below or using the app: https://www.open.ac.uk/apps/sites/www.open.ac.uk.apps/files/images/ar-trigger-images/human-heart-app-image-trigger.jpg

Screenshots

Galaxy Map4 screens
Human Heart4 screens

Verdict

The call

The clearest difference is in-app purchases: Human Heart at none against Galaxy Map's 13. Human Heart also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). Galaxy Map's advantage is review sentiment (80% vs 50%) and update cadence (every 5 weeks vs every 37 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. Galaxy Map sells 13 one-off in-app purchases. Human Heart asks for nothing beyond the download.

UpkeepUpdate frequency

Galaxy Map ships an update every 5 weeks, Human Heart every 37 months. The most recent releases landed on September 25, 2026 and August 25, 2026 respectively.

Scorecard6 real differences · 4 level
Galaxy Map versus Human Heart: the parameters behind the verdict, then further details
ParameterGalaxy MapHuman Heart
PriceFreeFree
Rating4.6 (600 ratings) — better—
Positive reviews80.0% of reviews — better50.0% of reviews
Number of ratings600 — better—
Update frequencyEvery 5 weeks — betterEvery 37 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size613 MB131 MB
Age rating4+4+
DeveloperAndrei NistorescuThe Open University

Customer experience

Galaxy Map

All ratings600 ratings
Positive91.0%
Neutral4.0%
Negative5.0%
Written reviews100 reviews
Positive80.0%
Neutral7.0%
Negative13.0%

Human Heart

Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Bugs and requests

Galaxy Map

Reported bugs

9 issues
  • App crashes on startup
  • Explore button shows nothing
  • Pinch-to-zoom doesn't work
  • App won't load on iPad
  • Text displays as boxes in language settings
Show 4 more
  • Mars moon orbital speed incorrect
  • App kicks users out during exploration
  • Loading issues and incomplete functionality
  • Inconsistent performance across platforms

Requested features

18 requests
  • Search button to find galaxies and objects
  • More diverse and realistic black hole designs
  • AR feature to identify stars/planets in real sky
  • More free content and objects
  • Exoplanet additions (TRAPPIST-1e, J1407B)
Show 13 more
  • Ability to click on stars within galaxies for details
  • Generated planets around stars
  • Sandbox/creation mode for user-generated content
  • Animation for Milky Way and Andromeda
  • More galaxy variety in the app
  • Coordinates filter for objects
  • Space-Engine style gameplay
  • Flying through galaxies feature
  • More female character customization options
  • VIP version option
  • Brown dwarfs addition
  • Photosphere viewing mode
  • More detailed star information

Human Heart

Not enough reviews yet to summarise bugs or requests.

In-app purchases

13 purchases

Galaxy Map

One-time13
  • Buy ship - Alien Destroyer$0.99
  • Buy ship - Alien fighter$0.99
  • Remove ads$1.99
Show 10 more
  • Buy ship - Alien Destroyer$1.99
  • Buy ship - Alien fighter$1.99
  • 3D Visualization Pack$1.99
  • Buy ship - Dragon Frigate$1.99
  • Essentials bundle - SALE$2.99
  • Remove ads$3.99
  • 3D Visualization Pack$3.99
  • Ultimate bundle - SALE$4.99
  • Essentials bundle$4.99
  • Ultimate bundle$8.99
None

Human Heart

No in-app purchases

Questions

Is Galaxy Map free?
Galaxy Map is free to download, with in-app purchases available.
Is Human Heart free?
Human Heart is free to download, with no in-app purchases.
Do Galaxy Map or Human Heart have ads?
Galaxy Map shows ads; Human Heart does not.
Which is updated more often, Galaxy Map or Human Heart?
Galaxy Map ships an update every 5 weeks, and Human Heart every 37 months. Most recently, Galaxy Map was updated on September 25, 2026 and Human Heart on August 25, 2026.

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