# Intergalactic Solar System vs Solar System&Celestial Objects

The clearest difference is in-app purchases: Solar System&Celestial Objects at none against Intergalactic Solar System's 1. Intergalactic Solar System's advantage is ads (none vs shown). On price, update cadence, 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. Solar System&Celestial Objects asks for nothing beyond the download.

Intergalactic Solar System ships an update monthly, Solar System&Celestial Objects every 6 weeks. The most recent releases landed on September 22, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | Intergalactic Solar System | Solar System&Celestial Objects |
| --- | --- | --- |
| 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** | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 355 MB | 62 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Intergalactic Education LLC](https://appshunter.io/developer/1364648815) | [NIKI TECH](https://appshunter.io/developer/1788609104) |

## 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 |


### Solar System&Celestial Objects

[App page](https://appshunter.io/ios/app/solar-system-and-celestial-objects/id6503188651)

**Features:** macOS Compatibility

**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 Solar System&Celestial Objects free?

Solar System&Celestial Objects is free to download, with no in-app purchases.

### Do Intergalactic Solar System or Solar System&Celestial Objects have ads?

Solar System&Celestial Objects shows ads; Intergalactic Solar System does not.

### Which is updated more often, Intergalactic Solar System or Solar System&Celestial Objects?

Intergalactic Solar System ships an update monthly, and Solar System&Celestial Objects every 6 weeks. Most recently, Intergalactic Solar System was updated on September 22, 2026 and Solar System&Celestial Objects on September 14, 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.*