# Univerzoom 3D vs Stars Units Sizes Objects

The clearest difference is price: Stars Units Sizes Objects at Free against Univerzoom 3D's $2.99. Stars Units Sizes Objects also leads on iOS requirement (11.0 vs 13.0). Univerzoom 3D's advantage is rating (4.8 vs 4.2) and ads (none vs shown). On in-app purchases and device support there is nothing between them.

Stars Units Sizes Objects is free to download; Univerzoom 3D costs $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 4.2. That said, the two scores are not equally well evidenced: Univerzoom 3D has 288 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 97% of Univerzoom 3D's written reviews are positive against 80% of Stars Units Sizes Objects's.

Univerzoom 3D ships an update monthly, Stars Units Sizes Objects every 4 months. The most recent releases landed on September 24, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Univerzoom 3D | Stars Units Sizes Objects |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.8 (288 ratings)](https://appshunter.io/ios/app/univerzoom-3d-explore-scale/id1552648156/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571/reviews) |
| Number of ratings | **288** | 5 |
| Positive reviews | **97.3% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 4 months |
| Monetization | **Free** | Ad-supported |
| Best chart rank | **#177** | — |
| Size | 247 MB | 124 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Linda Schnetzinger](https://appshunter.io/developer/1479825448) | [Mudarmeen Munlin](https://appshunter.io/developer/1348165664) |

## What reviewers say

### Univerzoom 3D

[App page](https://appshunter.io/ios/app/univerzoom-3d-explore-scale/id1552648156)

**Currently charting:** #177 Top Paid · Education (US App Store)

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.

**Highlights:** 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

**In-app purchases:** none


### Stars Units Sizes Objects

[App page](https://appshunter.io/ios/app/stars-units-sizes-objects/id1576148571)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Univerzoom 3D free?

Univerzoom 3D costs $2.99, with no in-app purchases.

### Is Stars Units Sizes Objects free?

Stars Units Sizes Objects is free to download, with no in-app purchases.

### Which has better reviews, Univerzoom 3D or Stars Units Sizes Objects?

Univerzoom 3D is rated higher. Univerzoom 3D averages 4.8 out of 5 from 288 ratings, while Stars Units Sizes Objects averages 4.2 from 5 ratings.

### Do Univerzoom 3D or Stars Units Sizes Objects have ads?

Stars Units Sizes Objects shows ads; Univerzoom 3D does not.

### Which is updated more often, Univerzoom 3D or Stars Units Sizes Objects?

Univerzoom 3D ships an update monthly, and Stars Units Sizes Objects every 4 months. Most recently, Univerzoom 3D was updated on September 24, 2026 and Stars Units Sizes Objects on September 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*