Universe Size Comparison vs Univerzoom 3D
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Universe Size Comparison
Explore the vastness of space and understand celestial body dimensions through interactive 3D comparisons. Discover the scale of planets and stars, from our Sun to hypergiant stars, with guided tours and free comparison modes.
- 3D astronomical comparisons
- Tour Mode with guided explanations
- Free Mode for custom comparisons
- Scale comparisons of planets and stars
- Detailed celestial body information
- Elegant user interface
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Universe Size Comparison is a unique 3D astronomical app that will make you understand the real dimensions of the universe and how small we are. Have you ever wondered how big the Sun is compared to Earth? Or what is the largest planet between Mars and Earth? Do you want to find out the dimensions of some of the most famous stars in the sky like Rigel and Betelgeuse in comparison to our Sun? Do you want to compare everything with the hypergiant star VY Canis Majoris? Universe Size Comparison is the right app for you. The app offers two modes: Tour Mode and Free Mode. Tour mode will guide you on a spectacular journey where you will see planets and stars compared in full scale. All accompanied by simple and clear explanations regardless of the level of knowledge of the subject. The Free mode will allow you to compare two celestial bodies of your choice in scale. You will also find out more information on the bodies you are comparing thanks to an elegant user interface designed to offer the maximum user experience.
Univerzoom 3D
Explore the vastness of the universe and the intricacies of the microcosmos with intuitive touch controls. Compare celestial bodies, everyday objects, and subatomic particles to grasp their true scale. Discover fascinating facts and learn about the cosmos and beyond.
- Intuitive gesture-based scaling
- Explore universe to atomic levels
- Compare sizes of diverse objects
- Learn facts about celestial bodies
- Text-to-Speech for facts
- External resource links
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This app gives you the superpower to scale the entire universe with a swipe of your fingers! Zoom out faster than light and see the cosmos from a whole new perspective. Compare the biggest objects to the tiniest and get a true sense of size. ZOOM • Control the scale with simple gestures • Zoom out billions of light years to the edge of the visible universe • Zoom in to microscopic dimensions, down to atoms and beyond • Easy for anyone to use — from kids to grandparents DISCOVER • Explore the scale of the universe and the microcosmos • Compare stars, planets, rockets, telescopes, animals, and everyday objects • Understand how our Sun measures up to other stars LEARN • Find stunning facts about selected objects, or let them be read aloud via Text-to-Speech • Access trusted external sources for deeper exploration • Perfect for curious minds, students, and science fans Download now and experience the universe like never before!
Screenshots
Verdict
The clearest difference is rating: Univerzoom 3D at 4.8 against Universe Size Comparison's 3.2. Univerzoom 3D also leads on review sentiment (97% vs 70%) and ratings volume (289 vs 30). Universe Size Comparison's advantage is chart position (#194 vs unranked) and price ($1.99 vs $2.99). On update cadence, ads, 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
Universe Size Comparison costs $1.99 and Univerzoom 3D $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Univerzoom 3D holds the better App Store score, 4.8 against 3.2. That said, the two scores are not equally well evidenced: Univerzoom 3D has 289 ratings behind it against 30, so its average is the more settled of the two. Written reviews point the same way: 70% of Universe Size Comparison's written reviews are positive against 97% of Univerzoom 3D's.
Universe Size Comparison ships an update every 3 months, Univerzoom 3D every 2 months. Both last shipped on November 11, 2026.
| Parameter | Universe Size Comparison | Univerzoom 3D |
|---|---|---|
| Price | $1.99 — better | $2.99 |
| Rating | 3.2 (30 ratings) | 4.8 (289 ratings) — better |
| Positive reviews | 70.0% of reviews | 97.3% of reviews — better |
| Number of ratings | 30 | 289 — better |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Best chart rank | #194 — better | — |
| Devices | iPhone, iPad, Apple TV | iPhone, iPad, iPod |
| Requires iOS | 17.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 411 MB | 255 MB |
| Age rating | +4 | 4+ |
| Developer | Daniele Citi | Linda Schnetzinger |
Customer experience
Universe Size Comparison
Univerzoom 3D
In-app purchases
Universe Size Comparison
No in-app purchases
Univerzoom 3D
No in-app purchases
Questions
Is Universe Size Comparison free?
Is Univerzoom 3D free?
Which has better reviews, Universe Size Comparison or Univerzoom 3D?
Do Universe Size Comparison or Univerzoom 3D have ads?
Which is updated more often, Universe Size Comparison or Univerzoom 3D?
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