# Back in Time for iPhone vs Universal Zoom

The clearest difference is rating: Universal Zoom at 4.8 against Back in Time for iPhone's 3.8. Universal Zoom also leads on review sentiment (97% vs 72%) and ratings volume (356 vs 15). Back in Time for iPhone's advantage is price ($4.99 vs $5.99). On ads, in-app purchases, monetization model and iOS requirement there is nothing between them.

Back in Time for iPhone costs $4.99 and Universal Zoom $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 3.8. That said, the two scores are not equally well evidenced: Universal Zoom has 356 ratings behind it against 15, so its average is the more settled of the two. Written reviews point the same way: 72% of Back in Time for iPhone's written reviews are positive against 97% of Universal Zoom's.

Back in Time for iPhone ships an update every 8 months, Universal Zoom every 4 months. The most recent releases landed on September 19, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Back in Time for iPhone | Universal Zoom |
| --- | --- | --- |
| Price | **$4.99** | $5.99 |
| Rating | [3.8 (15 ratings)](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811/reviews) | **[4.8 (356 ratings)](https://appshunter.io/ios/app/universal-zoom-science-guide/id807673066/reviews)** |
| Number of ratings | 15 | **356** |
| Positive reviews | 71.7% of reviews | **96.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Paid | Paid |
| Size | 625 MB | 175 MB |
| Requires iOS | 16.0 | **15.5** |
| Devices | iPhone | **iPhone, iPad, iPod, Apple TV** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [GamifyIt](https://appshunter.io/developer/807673069) |

## What reviewers say

### Back in Time for iPhone

[App page](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811)

Explore the history of the universe, Earth, life, and civilization through interactive timelines, stunning visuals, and custom animations. This app offers an immersive learning experience with social and historical context for key events.

**Highlights:** Interactive timelines, Over 350 images, 60+ animations and videos, 200+ interesting facts, Offline access, Multilingual support

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Back in Time for iPhone free?

Back in Time for iPhone costs $4.99, with no in-app purchases.

### Is Universal Zoom free?

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

### Which has better reviews, Back in Time for iPhone or Universal Zoom?

Universal Zoom is rated higher. Back in Time for iPhone averages 3.8 out of 5 from 15 ratings, while Universal Zoom averages 4.8 from 356 ratings.

### Do Back in Time for iPhone or Universal Zoom have ads?

Neither Back in Time for iPhone nor Universal Zoom shows ads.

### Which is updated more often, Back in Time for iPhone or Universal Zoom?

Back in Time for iPhone ships an update every 8 months, and Universal Zoom every 4 months. Most recently, Back in Time for iPhone was updated on September 19, 2026 and Universal Zoom on September 26, 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.*