# Back in Time vs Universe Size Comparison

The clearest difference is rating: Back in Time at 4.7 against Universe Size Comparison's 3.2. Back in Time also leads on review sentiment (84% vs 70%). Universe Size Comparison's advantage is price ($1.99 vs $7.99) and update cadence (every 3 months vs every 7 months). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Back in Time costs $7.99 and Universe Size Comparison $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Back in Time holds the better App Store score, 4.7 against 3.2. Both are backed by a comparable volume of ratings — 27 and 30 respectively. Written reviews point the same way: 84% of Back in Time's written reviews are positive against 70% of Universe Size Comparison's.

Back in Time ships an update every 7 months, Universe Size Comparison every 3 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | Back in Time | Universe Size Comparison |
| --- | --- | --- |
| Price | $7.99 | **$1.99** |
| Rating | **[4.7 (27 ratings)](https://appshunter.io/ios/app/back-in-time/id450345693/reviews)** | [3.2 (30 ratings)](https://appshunter.io/ios/app/universe-size-comparison/id1473946290/reviews) |
| Number of ratings | 27 | **30** |
| Positive reviews | **83.7% of reviews** | 70.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | Paid | Paid |
| Size | 836 MB | 411 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPad | **iPhone, iPad, Apple TV** |
| Age rating | 4+ | +4 |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [Daniele Citi](https://appshunter.io/developer/1187632258) |

## What reviewers say

### Back in Time

[App page](https://appshunter.io/ios/app/back-in-time/id450345693)

Explore the history of the Universe, Earth, Life, and Civilization through an immersive, interactive journey. This app uses custom animations, timelines, and interesting facts to bring historical events to life. It's designed to help users understand the connections between events and see the bigger picture.

**Highlights:** Interactive timeline of events, Custom animations and videos, Over 350 remarkable images, Little-known interesting facts, Offline access, Multilingual support

**Features:** macOS Compatibility

**In-app purchases:** none


### Universe Size Comparison

[App page](https://appshunter.io/ios/app/universe-size-comparison/id1473946290)

Explore the vastness of space and understand celestial body dimensions through interactive 3D comparisons. Discover the scale of planets and stars, from our Sun to hypergiant stars, with guided tours and free comparison modes.

**Highlights:** 3D astronomical comparisons, Tour Mode with guided explanations, Free Mode for custom comparisons, Scale comparisons of planets and stars, Detailed celestial body information, Elegant user interface

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

**In-app purchases:** none


## Frequently asked questions

### Is Back in Time free?

Back in Time costs $7.99, with no in-app purchases.

### Is Universe Size Comparison free?

Universe Size Comparison costs $1.99, with no in-app purchases.

### Which has better reviews, Back in Time or Universe Size Comparison?

Back in Time is rated higher. Back in Time averages 4.7 out of 5 from 27 ratings, while Universe Size Comparison averages 3.2 from 30 ratings.

### Do Back in Time or Universe Size Comparison have ads?

Neither Back in Time nor Universe Size Comparison shows ads.

### Which is updated more often, Back in Time or Universe Size Comparison?

Back in Time ships an update every 7 months, and Universe Size Comparison every 3 months. Most recently, Back in Time was updated on October 24, 2026 and Universe Size Comparison on October 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.*