Comparison

GlobeViewer Moon vs Stars Units Sizes Objects

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

Head to head
About

GlobeViewer Moon

Explore a detailed 3D model of the moon's surface with interactive globe and high-resolution map views. Discover craters, grooves, and other features with four distinct map modes, utilizing data from NASA's Lunar Reconnaissance Orbiter. This app offers adjustable lighting for enhanced visibility and is designed to be a valuable tool for telescope users.

Highlights
  • Interactive 3D moon globe
  • High-resolution 3D map view
  • Four map modes (elevation, photo, combined, telescope)
  • Adjustable lighting for feature visibility
  • Data from NASA's Lunar Reconnaissance Orbiter
  • Telescope mode with realistic lighting and moon phase simulation
Features
Read full description

GlobeViewer Moon is an interactive and three-dimensional representation of the entire moon surface. The globe rotation view provides an overview of all the existing designations for various surface features. If you are interested in a specific region, an even higher resolution 3D map view can be loaded in order to take a close look at the craters, grooves and other features. There are four map modes available (elevation display, photo illustration, a combination of both and a grey texture for the telescope mode). These views were created from data from NASA's Lunar Reconnaissance Orbiter. In addition, surface details (normal maps) have been obtained from the elevation data for the display, which can be combined with all map modes. Even the smallest craters, elevations, grooves and gorges are visible on the map. The lighting in the 3D map view is designed in such a way that the light can be directed into the crater from all directions. This is used to improve the visibility of height structures in the craters and is not intended to represent the real lighting situation. Realistic lighting that includes the ecliptic was also dispensed with in the globe view in favour of the visibility of the polar regions. In telescope mode the lighting is a realistic simulation including Moon phase and libration movement. So the app becomes a useful tool for telescope users. The app will recieve lot of updates in the future - this way, user feedback should flow into the further development. If you have any suggestions or ideas for further functions in the app, please contact us using the contact form on our website. We are looking forward to your feedback.

About

Stars Units Sizes Objects

Explore the vastness of the universe, from the smallest particles to the largest cosmic structures. Compare object sizes, view detailed images, and perform unit conversions across a wide range of astronomical scales. Learn about stars, galaxies, and the incredible distances between them.

Highlights
  • Compare object sizes
  • View object images
  • Pinch/Zoom and Pan images
  • Unit conversion for distances
  • Explore scales from Planck length to observable universe
  • Learn about stars and galaxies
Features
Read full description

Size of the smallest to largest objects and stars. Compare the size of objects in the universe. Object images. Pinch/Zoom image. Pan/Move image. Rotate image. Double tap to reset an image. From the smallest to the largest one. From planck length to observable universe. From Yoctometre, Zeptometre, Attometre, Femtometre, Picometre, Nanometre, Micro, Millimetre, Centimetre, Metre, KiloMetre, Lightyear, Parsecs, Billion Lightyears to 93 Billion Lightyears. Size of objects, particles, atoms, cells, stars and galaxies. Get to know the stars. Get to know the spaces. get to know the universe. How small is this world. How big is the universe. And How great is the creator. How far is the star distance from earth. Two way 18 distance unit conversion. planck length, yoctometer, zeptometer, attometer, femtometer, picometre, nanometre, micrometre, Millimeter, Centimeter, Meter, Kilometer, Inch, Foot, Mile, Astronomical, Lightyear, Parsecs. Perform auto conversion when picker is changed. Share conversion result. Reset unit convertor.

Screenshots

GlobeViewer Moon4 screens
Stars Units Sizes Objects4 screens

Verdict

The call

The clearest difference is review sentiment: Stars Units Sizes Objects at 80% against GlobeViewer Moon's 33%. Stars Units Sizes Objects also leads on rating (4.2 vs 2.0) and in-app purchases (none vs 6). On price, ratings volume, update cadence and ads 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. GlobeViewer Moon sells 6 one-off in-app purchases. Stars Units Sizes Objects asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Stars Units Sizes Objects holds the better App Store score, 4.2 against 2.0. Both are backed by a comparable volume of ratings — 3 and 5 respectively. Written reviews point the same way: 33% of GlobeViewer Moon's written reviews are positive against 80% of Stars Units Sizes Objects's.

UpkeepUpdate frequency

GlobeViewer Moon ships an update every 3 months, Stars Units Sizes Objects every 4 months. The most recent releases landed on October 8, 2026 and September 22, 2026 respectively.

Scorecard4 real differences · 6 level
GlobeViewer Moon versus Stars Units Sizes Objects: the parameters behind the verdict, then further details
ParameterGlobeViewer MoonStars Units Sizes Objects
PriceFreeFree
Rating2.0 (3 ratings)4.2 (5 ratings) — better
Positive reviews33.3% of reviews80.0% of reviews — better
Number of ratings35 — better
Update frequencyEvery 3 months — betterEvery 4 months
AdsYesYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPad, iPod, Mac — betteriPhone, iPad, iPod
Requires iOS12.011.0 — better
Further details — not scored
Size160 MB124 MB
Age rating4+4+
DeveloperRAB-SoftwareMudarmeen Munlin

Customer experience

GlobeViewer Moon

All ratings3 ratings
Positive33.3%
Neutral0.0%
Negative66.7%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Stars Units Sizes Objects

All ratings3 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

6 purchases

GlobeViewer Moon

One-time6
  • No Ads$4.99
  • Upgrade to Front$9.99
  • Moon front side only$13.99
Show 3 more
  • Upgrade to Pro$14.99
  • Upgrade to Pro$23.99
  • Professional version$26.99
None

Stars Units Sizes Objects

No in-app purchases

Questions

Is GlobeViewer Moon free?
GlobeViewer Moon is free to download, with in-app purchases available.
Is Stars Units Sizes Objects free?
Stars Units Sizes Objects is free to download, with no in-app purchases.
Which has better reviews, GlobeViewer Moon or Stars Units Sizes Objects?
Stars Units Sizes Objects is rated higher. GlobeViewer Moon averages 2.0 out of 5 from 3 ratings, while Stars Units Sizes Objects averages 4.2 from 5 ratings.
Do GlobeViewer Moon or Stars Units Sizes Objects have ads?
Both GlobeViewer Moon and Stars Units Sizes Objects show ads.
Which is updated more often, GlobeViewer Moon or Stars Units Sizes Objects?
GlobeViewer Moon ships an update every 3 months, and Stars Units Sizes Objects every 4 months. Most recently, GlobeViewer Moon was updated on October 8, 2026 and Stars Units Sizes Objects on September 22, 2026.

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