# Back in Time for iPhone vs Space Odyssey

The clearest difference is update cadence: Back in Time for iPhone at every 8 months against Space Odyssey's every 19 months. Space Odyssey's advantage is price ($2.99 vs $4.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

Back in Time for iPhone ships an update every 8 months, Space Odyssey every 19 months. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Back in Time for iPhone | Space Odyssey |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[3.8 (16 ratings)](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 71.7% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 19 months |
| Monetization | Paid | — |
| Size | 625 MB | 55 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [DigiGalaxy](https://appshunter.io/developer/1470420175) |

## 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


### Space Odyssey

[App page](https://appshunter.io/ios/app/space-odyssey-explore-and-learn/id1526966960)

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

**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 Space Odyssey free?

Space Odyssey costs $2.99, with no in-app purchases.

### Do Back in Time for iPhone or Space Odyssey have ads?

Neither Back in Time for iPhone nor Space Odyssey shows ads.

### Which is updated more often, Back in Time for iPhone or Space Odyssey?

Back in Time for iPhone ships an update every 8 months, and Space Odyssey every 19 months. Most recently, Back in Time for iPhone was updated on November 6, 2026 and Space Odyssey on November 7, 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.*