# A Solar System Journey vs Intergalactic Solar System

The clearest difference is review sentiment: Intergalactic Solar System at 70% against A Solar System Journey's 26%. Intergalactic Solar System also leads on ads (none vs shown) and update cadence (monthly vs every 6 months). A Solar System Journey's advantage is in-app purchases (none vs 1) and rating (4.5 vs 4.0). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Intergalactic Solar System sells 1 one-off in-app purchase. A Solar System Journey asks for nothing beyond the download.

A Solar System Journey holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: A Solar System Journey has 434 ratings behind it against 25, so its average is the more settled of the two. Written reviews complicate that: 26% of A Solar System Journey's written reviews are positive against 70% of Intergalactic Solar System's, so the app with the better star average is not the one people write more warmly about.

A Solar System Journey ships an update every 6 months, Intergalactic Solar System monthly. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | A Solar System Journey | Intergalactic Solar System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (434 ratings)](https://appshunter.io/ios/app/a-solar-system-journey/id444804070/reviews)** | [4.0 (25 ratings)](https://appshunter.io/ios/app/intergalactic-solar-system/id1505399254/reviews) |
| Number of ratings | **434** | 25 |
| Positive reviews | 25.7% of reviews | **70.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 15 MB | 355 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [John Rouda](https://appshunter.io/developer/396597129) | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) |

## What reviewers say

### A Solar System Journey

[App page](https://appshunter.io/ios/app/a-solar-system-journey/id444804070)

Explore our solar system with detailed information and images for each planet. Discover facts, view animated orbits, and learn about Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

**Highlights:** Detailed planet information, Close-up planet images, Animated planet orbits, Facts about each planet, Covers all major planets

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- ✨ Nice graphics
- ✨ Kool presentation
- ✨ Interesting solar system facts
- ✨ Helpful for astronomy

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 App freezes
- 🐛 App won't download
- 🐛 Planets rotate backwards
- 🐛 Incorrect astronomical facts

**Reported bugs**

- App doesn't work after download
- Cannot exit planet view
- App crashes on opening
- Planets rotate and orbit backwards
- Mercury and Earth both listed as densest

**Requested features**

- Add dwarf plants and other stuff
- Add more moons
- Add more photos
- Add more data about planets
- Add Pluto


### Intergalactic Solar System

[App page](https://appshunter.io/ios/app/intergalactic-solar-system/id1505399254)

Explore planets, moons, and countries in this space simulator mini-game. Learn astronomy and geography aligned with next-generation science standards. Discover the Milky Way galaxy and assess your knowledge through engaging gameplay.

**Highlights:** Planet and moon exploration, Country geography learning, Milky Way galaxy view, Common Core aligned curriculum, Proficiency assessment, Engaging gameplay levels

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Access to Full Game | $3.99 | one-time |


## Frequently asked questions

### Is A Solar System Journey free?

A Solar System Journey is free to download, with no in-app purchases.

### Is Intergalactic Solar System free?

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

### Which has better reviews, A Solar System Journey or Intergalactic Solar System?

A Solar System Journey is rated higher. A Solar System Journey averages 4.5 out of 5 from 434 ratings, while Intergalactic Solar System averages 4.0 from 25 ratings.

### Do A Solar System Journey or Intergalactic Solar System have ads?

A Solar System Journey shows ads; Intergalactic Solar System does not.

### Which is updated more often, A Solar System Journey or Intergalactic Solar System?

A Solar System Journey ships an update every 6 months, and Intergalactic Solar System monthly. Most recently, A Solar System Journey was updated on October 21, 2026 and Intergalactic Solar System on October 9, 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.*