# Back in Time for iPhone vs Solar System Scope

The clearest difference is price: Solar System Scope at Free against Back in Time for iPhone's $4.99. Solar System Scope also leads on rating (4.4 vs 3.8) and ratings volume (882 vs 15). Back in Time for iPhone's advantage is in-app purchases (none vs 1). On review sentiment and ads there is nothing between them.

Solar System Scope is free to download; Back in Time for iPhone costs $4.99 up front. Solar System Scope sells 1 one-off in-app purchase. Back in Time for iPhone asks for nothing beyond the download.

Solar System Scope holds the better App Store score, 4.4 against 3.8. That said, the two scores are not equally well evidenced: Solar System Scope has 882 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 76% of Solar System Scope's.

Back in Time for iPhone ships an update every 8 months, Solar System Scope every 4 months. The most recent releases landed on September 28, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Back in Time for iPhone | Solar System Scope |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [3.8 (15 ratings)](https://appshunter.io/ios/app/back-in-time-for-iphone/id483148811/reviews) | **[4.4 (882 ratings)](https://appshunter.io/ios/app/solar-system-scope/id863969175/reviews)** |
| Number of ratings | 15 | **882** |
| Positive reviews | 71.7% of reviews | **76.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 4 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 625 MB | 154 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Landka](https://appshunter.io/developer/450345696) | [INOVE, s.r.o.](https://appshunter.io/developer/863969178) |

## 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


### Solar System Scope

[App page](https://appshunter.io/ios/app/solar-system-scope/id863969175)

Explore and discover the solar system and outer space with realistic 3D visualizations and detailed celestial simulations. This app offers an educational and engaging experience for all ages, featuring a comprehensive encyclopedia and a night sky observatory.

**Highlights:** 3D Encyclopedia of celestial bodies, Realistic 3D visualizations, Night sky observatory with time simulation, Accurate orbital parameter calculations, High-quality planetary and moon maps, Multilingual support

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HQ Textures / No Ads | $5.99 | one-time |

**What reviewers like**

- 🚀 Amazing app
- 👍 Great for learning about space
- 🌟 Beautifully created
- 🔭 Realistic and detailed
- 🎓 Excellent for education

**What reviewers complain about**

- 🐛 Crashes frequently
- 🔀 Orientation issues
- 🔒 Upgrade required for full functionality
- 🕰️ Difficulty pinpointing specific dates

**Reported bugs**

- Crashes when dragging Jupiter
- Upside-down orientation on tablets
- Unable to restore purchases
- Freezes and crashes on launch

**Requested features**

- Add more celestial bodies (Messier objects, Planet 9/10, black holes, etc.)
- Enable exploration of other galaxies and deep space objects
- Improve telescope/zoom functionality
- Add more moons and irregular satellites
- Implement continental drift and solar system evolution


## Frequently asked questions

### Is Back in Time for iPhone free?

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

### Is Solar System Scope free?

Solar System Scope is free to download, with in-app purchases available.

### Which has better reviews, Back in Time for iPhone or Solar System Scope?

Solar System Scope is rated higher. Back in Time for iPhone averages 3.8 out of 5 from 15 ratings, while Solar System Scope averages 4.4 from 882 ratings.

### Do Back in Time for iPhone or Solar System Scope have ads?

Neither Back in Time for iPhone nor Solar System Scope shows ads.

### Which is updated more often, Back in Time for iPhone or Solar System Scope?

Back in Time for iPhone ships an update every 8 months, and Solar System Scope every 4 months. Most recently, Back in Time for iPhone was updated on September 28, 2026 and Solar System Scope on October 12, 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.*