Cozmic Zoom vs Stars Units Sizes Objects
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Cozmic Zoom
Explore the vastness of the universe, from subatomic particles to distant galaxies. This educational app uses accurate scientific data to guide you through scales of existence, offering fascinating facts about astronomy, biology, and physics.
- Cosmic scale exploration
- Accurate scientific data
- Learn astronomy facts
- Explore biology and physics
- Interactive finger swipe navigation
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The whole universe in your hand! Cozmic Zoom is a fascinating insight into the cosmos, between the infinitely large and the infinitely small. Based on accurate scientific data from the best sources, Cozmic Zoom will take you on a journey through the world of particles and atoms, the cells of the human body, the planet Earth and the Solar System, the stars and the Milky Way, the distant galaxies, up to the edges of the known universe, with a simple swipe of the finger. While enjoying the trip, you can also learn amazing facts and improve your knowledge about astronomy, biology, cosmology, physics, space, and much more. Cozmic Zoom was inspired, among others, by the famous documentary film Powers of Ten. “Exploration is in our nature. We began as wanderers, and we are wanderers still. We have lingered long enough on the shores of the cosmic ocean. We are ready at last to set sail for the stars.” ― Carl Sagan Come on, let's sail to the stars... To infinity... and beyond!
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 price: Stars Units Sizes Objects at Free against Cozmic Zoom's $0.99. Stars Units Sizes Objects also leads on rating (4.3 vs 3.7) and review sentiment (80% vs 60%). Cozmic Zoom's advantage is ads (none vs shown) and ratings volume (67 vs 6). On 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
Stars Units Sizes Objects is free to download; Cozmic Zoom costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stars Units Sizes Objects holds the better App Store score, 4.3 against 3.7. That said, the two scores are not equally well evidenced: Cozmic Zoom has 67 ratings behind it against 6, so its average is the more settled of the two. Written reviews point the same way: 60% of Cozmic Zoom's written reviews are positive against 80% of Stars Units Sizes Objects's.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on November 1, 2026 and October 31, 2026 respectively.
| Parameter | Cozmic Zoom | Stars Units Sizes Objects |
|---|---|---|
| Price | $0.99 | Free — better |
| Rating | 3.7 (67 ratings) | 4.3 (6 ratings) — better |
| Positive reviews | 60.0% of reviews | 80.0% of reviews — better |
| Number of ratings | 67 — better | 6 |
| Update frequency | Every 4 months | Every 4 months |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free — better | Ad-supported |
| Best chart rank | #56 — better | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 8.0 — better | 11.0 |
| Further details — not scored | ||
| Size | 60 MB | 124 MB |
| Age rating | 4+ | 4+ |
| Developer | Patrick Godeau | Mudarmeen Munlin |
Customer experience
Cozmic Zoom
Stars Units Sizes Objects
In-app purchases
Cozmic Zoom
No in-app purchases
Stars Units Sizes Objects
No in-app purchases
Questions
Is Cozmic Zoom free?
Is Stars Units Sizes Objects free?
Which has better reviews, Cozmic Zoom or Stars Units Sizes Objects?
Do Cozmic Zoom or Stars Units Sizes Objects have ads?
Which is updated more often, Cozmic Zoom or Stars Units Sizes Objects?
Other comparisons
