# Universal Zoom vs ETTAN  EHSAN

The clearest difference is price: ETTAN  EHSAN at Free against Universal Zoom's $5.99. ETTAN  EHSAN also leads on update cadence (every 9 days vs every 4 months). Universal Zoom's advantage is device support (4 vs 1) and iOS requirement (15.5 vs 18.2). On ads and in-app purchases there is nothing between them.

ETTAN  EHSAN 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 ships an update every 4 months, ETTAN  EHSAN every 9 days. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Universal Zoom | ETTAN  EHSAN |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| Rating | **[4.8 (356 ratings)](https://appshunter.io/ios/app/universal-zoom-science-guide/id807673066/reviews)** | — |
| Number of ratings | **356** | — |
| Positive reviews | 96.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Monetization | Paid | — |
| Size | 175 MB | 94 MB |
| Requires iOS | **15.5** | 18.2 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [GamifyIt](https://appshunter.io/developer/807673069) | [Karim Adouane](https://appshunter.io/developer/1869922435) |

## 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


### ETTAN  EHSAN

[App page](https://appshunter.io/ios/app/ettan-ehsan/id6757956008)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Universal Zoom free?

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

### Is ETTAN  EHSAN free?

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

### Do Universal Zoom or ETTAN  EHSAN have ads?

Neither Universal Zoom nor ETTAN  EHSAN shows ads.

### Which is updated more often, Universal Zoom or ETTAN  EHSAN?

Universal Zoom ships an update every 4 months, and ETTAN  EHSAN every 9 days. Most recently, Universal Zoom was updated on October 15, 2026 and ETTAN  EHSAN on October 12, 2026.

---

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