# Universal Zoom vs ScaleWalk

The clearest difference is price: ScaleWalk at Free against Universal Zoom's $5.99. ScaleWalk also leads on iOS requirement (13.0 vs 15.5). Universal Zoom's advantage is rating (4.8 vs 3.0) and ratings volume (365 vs 1). On ads, in-app purchases and device support there is nothing between them.

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

Universal Zoom holds the better App Store score, 4.8 against 3.0. That said, the two scores are not equally well evidenced: Universal Zoom has 365 ratings behind it against 1, so its average is the more settled of the two.

## The numbers

| Metric | Universal Zoom | ScaleWalk |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.8 (365 ratings)](https://appshunter.io/ios/app/universal-zoom-science-guide/id807673066/reviews)** | [3.0 (1 ratings)](https://appshunter.io/ios/app/scalewalk/id6793884701/reviews) |
| Number of ratings | **365** | 1 |
| Positive reviews | 96.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Paid | **Free** |
| Size | 175 MB | 21 MB |
| Requires iOS | 15.5 | **13.0** |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GamifyIt](https://appshunter.io/developer/807673069) | [Dieu Hien Nguyen Thi](https://appshunter.io/developer/6774980481) |

## 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


### ScaleWalk

[App page](https://appshunter.io/ios/app/scalewalk/id6793884701)

Explore the vast scale of the universe, from DNA to stars, with interactive logarithmic visuals. Compare objects, access knowledge cards, and follow guided learning paths. Save your discoveries and test your understanding.

**Highlights:** Interactive logarithmic universe exploration, Object comparison, Knowledge cards, Guided learning journeys, Save discoveries, Learning tests

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Universal Zoom free?

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

### Is ScaleWalk free?

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

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

Universal Zoom is rated higher. Universal Zoom averages 4.8 out of 5 from 365 ratings, while ScaleWalk averages 3.0 from 1 ratings.

### Do Universal Zoom or ScaleWalk have ads?

Neither Universal Zoom nor ScaleWalk shows ads.

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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.*