Mars Info Lite vs Stars Units Sizes Objects
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Mars Info Lite
Explore the surface of the Red Planet with an interactive 3D globe. Discover significant locations like volcanoes, craters, and mountains, and view detailed information about each. This version offers a curated selection of points of interest.
- Interactive 3D Mars globe
- Rotate, tilt, and zoom controls
- Pinpoint key locations
- View location details (name, type, size, coordinates)
- List of selectable locations
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Explore Mars using simple gestures to rotate a globe, tilt, zoom and select locations. Credits - Viking Orbiter MDIM 2.1 map of Mars - NASA NASA's Scientific Visualization Studio: GMM-3 MOLA (Mars Orbiter Laser Altimeter) Topography map GMM-3 Free-Air Mars Gravity map GMM-3 Bouguer Mars Gravity map GMM-3 Crustal Mars Thickness map Features: - Ability to pinpoint about 80 the most interesting areas on the map of Mars, including volcanos, craters, plains, mountains, spacecrafts. - Displaying some information about the location, such as its name, type, short description, size and coordinates. - Ability to select locations on the 3D globe and on the plain list. - Zoom, rotation, tilt of the globe. Lite version is limited to display 7 locations for each category, i.e. you will see 42 places vs 80 (currently) in a full version.
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.
- 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
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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
Verdict
The clearest difference is ads: Mars Info Lite at none against Stars Units Sizes Objects's shown. Mars Info Lite also leads on ratings volume (200 vs 5) and review sentiment (96% vs 80%). Stars Units Sizes Objects's advantage is iOS requirement (11.0 vs 17.0). On price, update cadence, in-app purchases 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Mars Info Lite holds the better App Store score, 4.4 against 4.2. That said, the two scores are not equally well evidenced: Mars Info Lite has 200 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 96% of Mars Info Lite's written reviews are positive against 80% of Stars Units Sizes Objects's.
Mars Info Lite ships an update every 3 months, Stars Units Sizes Objects every 4 months. The most recent releases landed on September 20, 2026 and September 7, 2026 respectively.
| Parameter | Mars Info Lite | Stars Units Sizes Objects |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (200 ratings) — better | 4.2 (5 ratings) |
| Positive reviews | 96.0% of reviews — better | 80.0% of reviews |
| Number of ratings | 200 — better | 5 |
| Update frequency | Every 3 months — better | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Devices | iPhone, iPad, Mac, Apple TV — better | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 210 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Viktor Goltvyanytsya | Mudarmeen Munlin |
Customer experience
Mars Info Lite
Stars Units Sizes Objects
Bugs and requests
Mars Info Lite
Reported bugs
2 issues- Pinpoints shifted 90 degrees in longitude
- Crashes immediately on iPhone 4s
Requested features
4 requests- Implement geomorphology data
- Add ability to zoom out and see Mars alignment with other planets
- Add VR support
- Add apps for other planets
Stars Units Sizes Objects
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Mars Info Lite
No in-app purchases
Stars Units Sizes Objects
No in-app purchases
Questions
Is Mars Info Lite free?
Is Stars Units Sizes Objects free?
Which has better reviews, Mars Info Lite or Stars Units Sizes Objects?
Do Mars Info Lite or Stars Units Sizes Objects have ads?
Which is updated more often, Mars Info Lite or Stars Units Sizes Objects?
Other comparisons
