# Universal Zoom vs 国学经典之道德经

The clearest difference is price: 国学经典之道德经 at $0.99 against Universal Zoom's $5.99. 国学经典之道德经 also leads on iOS requirement (12.0 vs 15.5). Universal Zoom's advantage is device support. On in-app purchases there is nothing between them.

Universal Zoom costs $5.99 and 国学经典之道德经 $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Universal Zoom | 国学经典之道德经 |
| --- | --- | --- |
| Price | $5.99 | **$0.99** |
| Rating | **[4.8 (366 ratings)](https://appshunter.io/ios/app/universal-zoom-science-guide/id807673066/reviews)** | — |
| Number of ratings | **366** | — |
| Positive reviews | 96.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 175 MB | 43 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | **iPhone, iPad, iPod, Apple TV** | — |
| Age rating | 4+ | 4+ |
| Developer | [GamifyIt](https://appshunter.io/developer/807673069) | [wenlin Huang](https://appshunter.io/developer/1108308410) |

## 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


### 国学经典之道德经

[App page](https://appshunter.io/ios/app/id6569253330)

**In-app purchases:** none


## Frequently asked questions

### Is Universal Zoom free?

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

### Is 国学经典之道德经 free?

国学经典之道德经 costs $0.99, with no in-app purchases.

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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.*