# CosmAtlas vs Real Solar System

The clearest difference is rating: CosmAtlas at 4.1 against Real Solar System's 1.0. CosmAtlas also leads on ratings volume (17 vs 1) and iOS requirement (8.1 vs 17.6). Real Solar System's advantage is update cadence (monthly vs every 9 months). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CosmAtlas holds the better App Store score, 4.1 against 1.0. That said, the two scores are not equally well evidenced: CosmAtlas has 17 ratings behind it against 1, so its average is the more settled of the two.

CosmAtlas ships an update every 9 months, Real Solar System monthly. Both last shipped on October 24, 2026.

## The numbers

| Metric | CosmAtlas | Real Solar System |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (17 ratings)](https://appshunter.io/ios/app/cosmatlas/id916541593/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/real-solar-system/id6475644962/reviews) |
| Number of ratings | **17** | 1 |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Monetization | Free | — |
| Size | 868 MB | 302 MB |
| Requires iOS | **8.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Aurelio Calegari](https://appshunter.io/developer/622340318) | [Masaya Nagaoka](https://appshunter.io/developer/1698240335) |

## What reviewers say

### CosmAtlas

[App page](https://appshunter.io/ios/app/cosmatlas/id916541593)

Explore the Milky Way with a realistic physics simulator. Navigate the cosmos, land on planets and moons, and view the sky from different celestial bodies. Features detailed information on solar system objects, stars, and constellations.

**Highlights:** Milky Way simulation, Real physics engine, Explore planets and moons, Detailed celestial body data, View sky from different locations, Multi-language support

**Features:** macOS Compatibility

**In-app purchases:** none


### Real Solar System

[App page](https://appshunter.io/ios/app/real-solar-system/id6475644962)

**In-app purchases:** none


## Frequently asked questions

### Is CosmAtlas free?

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

### Is Real Solar System free?

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

### Which has better reviews, CosmAtlas or Real Solar System?

CosmAtlas is rated higher. CosmAtlas averages 4.1 out of 5 from 17 ratings, while Real Solar System averages 1.0 from 1 ratings.

### Do CosmAtlas or Real Solar System have ads?

Neither CosmAtlas nor Real Solar System shows ads.

### Which is updated more often, CosmAtlas or Real Solar System?

CosmAtlas ships an update every 9 months, and Real Solar System monthly. Most recently, CosmAtlas was updated on October 24, 2026 and Real Solar System on October 24, 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.*