# Universal Zoom vs Cosmology

The clearest difference is price: Cosmology at Free against Universal Zoom's $5.99. Cosmology also leads on update cadence (monthly vs every 4 months) and iOS requirement (11.0 vs 15.5). Universal Zoom's advantage is review sentiment (97% vs 89%). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Cosmology is free to download; Universal Zoom costs $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for Universal Zoom against 4.7 for Cosmology. Both are backed by a comparable volume of ratings — 363 and 554 respectively. Written reviews are what separate them: 97% of Universal Zoom's written reviews are positive against 89% of Cosmology's.

Universal Zoom ships an update every 4 months, Cosmology monthly. The most recent releases landed on October 21, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Universal Zoom | Cosmology |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.8 (363 ratings)](https://appshunter.io/ios/app/universal-zoom-science-guide/id807673066/reviews)** | [4.7 (554 ratings)](https://appshunter.io/ios/app/cosmology/id1028872453/reviews) |
| Number of ratings | 363 | **554** |
| Positive reviews | **96.7% of reviews** | 88.6% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | Paid | **Free** |
| Size | 175 MB | 190 MB |
| Requires iOS | 15.5 | **11.0** |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GamifyIt](https://appshunter.io/developer/807673069) | [Aaron Day](https://appshunter.io/developer/1028872452) |

## What reviewers say

### Universal Zoom

[App page](https://appshunter.io/ios/app/universal-zoom-science-guide/id807673066)

Explore the universe's vastness and intricacy through interactive visual comparisons. Seamlessly zoom from subatomic particles to the observable universe, gaining intuition about scale and size with stunning imagery and clear explanations.

**Highlights:** Seamless zooming across scales, Visual comparisons of objects, Jargon-free scientific explanations, Audio narration, Over 270 objects presented to scale, Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Fascinating and informative
- 🚀 Smooth and seamless experience
- 💡 Puts things into perspective
- 👍 Great learning tool for all ages
- 👍 Visually appealing and well-designed

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🔋 High battery consumption
- 🔇 Background music could be improved

**Reported bugs**

- Incorrect information for some objects
- Compatibility issues on older devices
- Typos and minor errors in text

**Requested features**

- Add more objects and comparisons
- Customizable object feature
- Support for more languages
- Ability to toggle between metric and imperial units
- Search and filtering options


### Cosmology

[App page](https://appshunter.io/ios/app/cosmology/id1028872453)

Explore the universe with stunning high-resolution images of celestial bodies. Journey through space, visiting planets and their moons, while learning about the evolution of space, time, and matter. Ponder the profound mysteries of existence.

**Highlights:** High-resolution images of planets, nebulae, and galaxies, Interactive space travel to planets and moons, Learn about the evolution of space, time, and matter, Expert narration by Dr. Aaron Day, Exploration of existential mysteries of the universe

**In-app purchases:** none

**What reviewers like**

- 🌟 Stunning, beautiful astrophotography images
- 📚 Educational content about space and universe
- 👍 Easy to use and understand interface
- 🎥 Informative videos and interactive features
- 🗺️ Interactive map for exploring cosmic scales

**What reviewers complain about**

- 🐛 Image interference/technical glitches
- 📖 Shallow explanations for non-experts
- ⚠️ Limited educational depth compared to NASA app
- 🤔 Big Bang theory focus may conflict with religious beliefs
- ❌ Incomplete sections (Milky Way, Island Universe)

**Reported bugs**

- Image display interference/hacking concerns
- App feels incomplete in certain sections

**Requested features**

- More interactive activities and engagement features
- Text-to-speech functionality
- More detailed explanations for beginner-level users
- Additional sub-categories and content sections
- Regular updates with current astronomical images


## Frequently asked questions

### Is Universal Zoom free?

Universal Zoom costs $5.99, with no in-app purchases.

### Is Cosmology free?

Cosmology is free to download, with no in-app purchases.

### Which has better reviews, Universal Zoom or Cosmology?

Universal Zoom is rated higher. Universal Zoom averages 4.8 out of 5 from 363 ratings, while Cosmology averages 4.7 from 554 ratings.

### Do Universal Zoom or Cosmology have ads?

Neither Universal Zoom nor Cosmology shows ads.

### Which is updated more often, Universal Zoom or Cosmology?

Universal Zoom ships an update every 4 months, and Cosmology monthly. Most recently, Universal Zoom was updated on October 21, 2026 and Cosmology on October 23, 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.*