# Intergalactic Solar System vs Epicycle

The clearest difference is in-app purchases: Epicycle at none against Intergalactic Solar System's 1. Epicycle also leads on update cadence (every 8 days vs monthly). Intergalactic Solar System's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

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

Intergalactic Solar System ships an update monthly, Epicycle every 8 days. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Intergalactic Solar System | Epicycle |
| --- | --- | --- |
| Price | Free | 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 355 MB | 5 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) | [FlowDevs, LLC](https://appshunter.io/developer/1872839618) |

## What reviewers say

### 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 |


### Epicycle

[App page](https://appshunter.io/ios/app/epicycle-learn-the-sky/id6811191266)

**In-app purchases:** none


## Frequently asked questions

### Is Intergalactic Solar System free?

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

### Is Epicycle free?

Epicycle is free to download, with no in-app purchases.

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

Neither Intergalactic Solar System nor Epicycle shows ads.

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

Intergalactic Solar System ships an update monthly, and Epicycle every 8 days. Most recently, Intergalactic Solar System was updated on October 9, 2026 and Epicycle on October 10, 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.*