# Interactive Solar System vs Intergalactic Solar System

The clearest difference is price: Intergalactic Solar System at Free against Interactive Solar System's $1.99. Interactive Solar System's advantage is in-app purchases (none vs 1) and update cadence (fortnightly vs monthly). On ads, device support and iOS requirement there is nothing between them.

Intergalactic Solar System is free to download; Interactive Solar System costs $1.99 up front. Intergalactic Solar System sells 1 one-off in-app purchase. Interactive Solar System asks for nothing beyond the download.

Interactive Solar System ships an update fortnightly, Intergalactic Solar System monthly. The most recent releases landed on October 5, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Interactive Solar System | Intergalactic Solar System |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[4.0 (25 ratings)](https://appshunter.io/ios/app/intergalactic-solar-system/id1505399254/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 70.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Monthly |
| Monetization | — | Free with in-app purchases |
| Size | 52 MB | 355 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPad, Apple TV | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ventura Educational Systems](https://appshunter.io/developer/371324172) | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) |

## What reviewers say

### Interactive Solar System

[App page](https://appshunter.io/ios/app/interactive-solar-system/id1240878228)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Interactive Solar System free?

Interactive Solar System costs $1.99, with no in-app purchases.

### Is Intergalactic Solar System free?

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

### Do Interactive Solar System or Intergalactic Solar System have ads?

Neither Interactive Solar System nor Intergalactic Solar System shows ads.

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

Interactive Solar System ships an update fortnightly, and Intergalactic Solar System monthly. Most recently, Interactive Solar System was updated on October 5, 2026 and Intergalactic Solar System on September 22, 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.*