# Universal Zoom vs Word Completion

The clearest difference is price: Word Completion at Free against Universal Zoom's $5.99. Word Completion also leads on update cadence (every 4 days vs every 4 months). Universal Zoom's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Word Completion is free to download; Universal Zoom costs $5.99 up front. Word Completion sells 2 in-app purchases, starting at $2.99 per 7 days. Universal Zoom asks for nothing beyond the download.

Universal Zoom ships an update every 4 months, Word Completion every 4 days. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Universal Zoom | Word Completion |
| --- | --- | --- |
| 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 | 96.7% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 4 months | **Every 4 days** |
| Monetization | Paid | — |
| Best chart rank | **#71** | — |
| Size | 175 MB | 81 MB |
| Requires iOS | **15.5** | 15.6 |
| Devices | **iPhone, iPad, iPod, Apple TV** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [GamifyIt](https://appshunter.io/developer/807673069) | [RONY HAJONG](https://appshunter.io/developer/6798962314) |

## What reviewers say

### Universal Zoom

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

**Currently charting:** #71 Top Paid · Education (US App Store)

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


### Word Completion

[App page](https://appshunter.io/ios/app/word-completion/id6800076339)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Word Completion Premium Weekly | $2.99 | per 7 days |
| Word Completion Premium Yearly | $29.99 | per year |


## Frequently asked questions

### Is Universal Zoom free?

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

### Is Word Completion free?

Word Completion is free to download, with in-app purchases available.

### Do Universal Zoom or Word Completion have ads?

Word Completion shows ads; Universal Zoom does not.

### Which is updated more often, Universal Zoom or Word Completion?

Universal Zoom ships an update every 4 months, and Word Completion every 4 days. Most recently, Universal Zoom was updated on October 18, 2026 and Word Completion on October 2, 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.*