# Back in Time for iPhone vs Univerzoom 3D

The clearest difference is rating: Univerzoom 3D at 4.8 against Back in Time for iPhone's 3.8. Univerzoom 3D also leads on update cadence (monthly vs every 8 months) and review sentiment (97% vs 72%). On ads and in-app purchases there is nothing between them.

Back in Time for iPhone costs $4.99 and Univerzoom 3D $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Univerzoom 3D holds the better App Store score, 4.8 against 3.8. That said, the two scores are not equally well evidenced: Univerzoom 3D has 288 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 Univerzoom 3D's.

Back in Time for iPhone ships an update every 8 months, Univerzoom 3D monthly. The most recent releases landed on September 19, 2026 and September 27, 2026 respectively.

## The numbers

| Metric | Back in Time for iPhone | Univerzoom 3D |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | [3.8 (15 ratings)](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811/reviews) | **[4.8 (288 ratings)](https://appshunter.io/ios/app/univerzoom-3d-explore-scale/id1552648156/reviews)** |
| Number of ratings | 15 | **288** |
| Positive reviews | 71.7% of reviews | **97.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Monthly** |
| Monetization | Paid | **Free** |
| Best chart rank | — | **#99** |
| Size | 625 MB | 247 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [Linda Schnetzinger](https://appshunter.io/developer/1479825448) |

## 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


### Univerzoom 3D

[App page](https://appshunter.io/ios/app/univerzoom-3d-explore-scale/id1552648156)

**Currently charting:** #99 Top Paid · Education (US App Store)

Explore the vastness of the universe and the intricacies of the microcosmos with intuitive touch controls. Compare celestial bodies, everyday objects, and subatomic particles to grasp their true scale. Discover fascinating facts and learn about the cosmos and beyond.

**Highlights:** Intuitive gesture-based scaling, Explore universe to atomic levels, Compare sizes of diverse objects, Learn facts about celestial bodies, Text-to-Speech for facts, External resource links

**In-app purchases:** none


## Frequently asked questions

### Is Back in Time for iPhone free?

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

### Is Univerzoom 3D free?

Univerzoom 3D costs $2.99, with no in-app purchases.

### Which has better reviews, Back in Time for iPhone or Univerzoom 3D?

Univerzoom 3D is rated higher. Back in Time for iPhone averages 3.8 out of 5 from 15 ratings, while Univerzoom 3D averages 4.8 from 288 ratings.

### Do Back in Time for iPhone or Univerzoom 3D have ads?

Neither Back in Time for iPhone nor Univerzoom 3D shows ads.

### Which is updated more often, Back in Time for iPhone or Univerzoom 3D?

Back in Time for iPhone ships an update every 8 months, and Univerzoom 3D monthly. Most recently, Back in Time for iPhone was updated on September 19, 2026 and Univerzoom 3D on September 27, 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.*