Gravity! vs Univerzoom 2D Size Comparison
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Gravity!
Simulate the forces of gravity by flinging particles and observing their interactions. Create celestial bodies like planets and black holes, and customize their properties. Explore vast cosmic simulations with intuitive zoom and pan controls.
- Gravity simulation
- Particle interaction
- Create solar systems
- Add black holes
- Adjust particle properties
- Zoom and pan controls
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This app simulates the effects of gravity. You can fling particles at each other and watch them interact. Create solar systems and galaxies! Make a planet and fling asteroids into it! Add a black hole and watch everything get sucked in! You can adjust the size, mass, and color of the particles! Zoom in and out and look around with two fingers! App Preview Music: "Mesmerizing Galaxy " Kevin MacLeod (incompetech.com) Licensed under Creative Commons: By Attribution 4.0 License http://creativecommons.org/licenses/by/4.0/
Univerzoom 2D Size Comparison
Explore the relative sizes of everyday objects with minimalist visual comparisons. Create and share custom comparisons of vehicles, animals, landmarks, and more to understand their true dimensions. Perfect for students, educators, and anyone curious about scale.
- Create custom size comparisons
- Explore terrestrial object categories
- Visualize dimensions in orthogonal perspective
- Customize comparisons with an easy interface
- Save and share visual references
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Discover the power of visual scale with Univerzoom 2D, the perfect companion to our cosmic Univerzoom 3D app. While Univerzoom 3D explores the vast reaches of the universe, Univerzoom 2D brings scale comparison down to Earth — focusing on the fascinating dimensions of objects from our everyday world. Create clear and intuitive size comparisons using minimalist black silhouettes in a clean, orthogonal perspective. Compare vehicles, animals, dinosaurs, landmarks, and many other earthly objects to better understand their true relative sizes. Key Features • Create custom size comparisons with sleek, minimalist shapes • Explore multiple terrestrial categories, including vehicles, animals, and prehistoric life • Visualize dimensions in a clean, orthogonal perspective • Customize comparisons with an easy-to-use interface • Save and share visual references with others Perfect for students, educators, designers, and curious minds, Univerzoom 2D transforms abstract measurements into meaningful visual understanding. Did you know a Tyrannosaurus rex was roughly the size of a school bus? Or how different vehicles compare across regions? Discover fascinating size relationships and build your own comparisons. Inspired by popular scale comparison videos from YouTube creator morn1415, this app puts the power of perspective in your hands — complementing the cosmic scale of Univerzoom 3D with a focus on our world. Download Univerzoom 2D for free and start exploring scale comparisons. Additional content and features are available via optional in-app purchase.
Screenshots
Verdict
The clearest difference is rating: Univerzoom 2D Size Comparison at 4.6 against Gravity!'s 3.9. Univerzoom 2D Size Comparison also leads on update cadence (weekly vs every 2 months) and review sentiment (100% vs 74%). On price, ads, in-app purchases and monetization model 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. Gravity! sells 1 one-off in-app purchase and Univerzoom 2D Size Comparison sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
Univerzoom 2D Size Comparison holds the better App Store score, 4.6 against 3.9. Both are backed by a comparable volume of ratings — 18 and 67 respectively. Written reviews point the same way: 74% of Gravity!'s written reviews are positive against 100% of Univerzoom 2D Size Comparison's.
Gravity! ships an update every 2 months, Univerzoom 2D Size Comparison weekly. The most recent releases landed on October 12, 2026 and October 17, 2026 respectively.
| Parameter | Gravity! | Univerzoom 2D Size Comparison |
|---|---|---|
| Price | Free | Free |
| Rating | 3.9 (18 ratings) | 4.6 (67 ratings) — better |
| Positive reviews | 73.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 18 | 67 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 17 MB | 254 MB |
| Age rating | 4+ | 4+ |
| Developer | Marc Davis | Linda Schnetzinger |
Customer experience
Gravity!
Univerzoom 2D Size Comparison
In-app purchases
Gravity!
- Gravity! Extended Edition$0.99
Univerzoom 2D Size Comparison
- Upgrade to Complete Collection$1.99
- Premium Unlock$1.99
- Complete Collection$3.99
Questions
Is Gravity! free?
Is Univerzoom 2D Size Comparison free?
Which has better reviews, Gravity! or Univerzoom 2D Size Comparison?
Do Gravity! or Univerzoom 2D Size Comparison have ads?
Which is updated more often, Gravity! or Univerzoom 2D Size Comparison?
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