# 3D Solar System Tour vs CosmicObserver

The clearest difference is ads: CosmicObserver at none against 3D Solar System Tour's shown. 3D Solar System Tour's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, update cadence and in-app purchases there is nothing between them.

Both are free to download. 3D Solar System Tour sells 1 one-off in-app purchase and CosmicObserver sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

3D Solar System Tour ships an update every 3 weeks, CosmicObserver every 5 weeks. The most recent releases landed on October 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 3D Solar System Tour | CosmicObserver |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 5 weeks |
| Size | 74 MB | 188 MB |
| Requires iOS | **15.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Imamura](https://appshunter.io/developer/1801902689) | [Yuichi Okuno](https://appshunter.io/developer/1803911141) |

## What reviewers say

### 3D Solar System Tour

[App page](https://appshunter.io/ios/app/3d-solar-system-tour/id6755645976)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $5.00 | one-time |


### CosmicObserver

[App page](https://appshunter.io/ios/app/cosmicobserver/id6787430312)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cosmic Pass | $4.99 | one-time |


## Frequently asked questions

### Is 3D Solar System Tour free?

3D Solar System Tour is free to download, with in-app purchases available.

### Is CosmicObserver free?

CosmicObserver is free to download, with in-app purchases available.

### Do 3D Solar System Tour or CosmicObserver have ads?

3D Solar System Tour shows ads; CosmicObserver does not.

### Which is updated more often, 3D Solar System Tour or CosmicObserver?

3D Solar System Tour ships an update every 3 weeks, and CosmicObserver every 5 weeks. Most recently, 3D Solar System Tour was updated on October 6, 2026 and CosmicObserver on October 28, 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.*