# 3D Solar System Tour vs Astro!

The clearest difference is in-app purchases: Astro! at none against 3D Solar System Tour's 1. Astro! also leads on ads (none vs shown). 3D Solar System Tour's advantage is update cadence (every 3 weeks vs every 6 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. 3D Solar System Tour sells 1 one-off in-app purchase. Astro! asks for nothing beyond the download.

3D Solar System Tour ships an update every 3 weeks, Astro! every 6 weeks. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | 3D Solar System Tour | Astro! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (7 ratings)](https://appshunter.io/ios/app/astro/id6770999261/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 3 weeks** | Every 6 weeks |
| Monetization | — | Free |
| Size | 74 MB | 23 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Takashi Imamura](https://appshunter.io/developer/1801902689) | [LARA NELLE SCARBOROUGH](https://appshunter.io/developer/1896768520) |

## 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 |


### Astro!

[App page](https://appshunter.io/ios/app/astro/id6770999261)

Explore the cosmos with daily NASA images and engaging facts about space. Discover stargazing tools and upcoming celestial events. Perfect for anyone curious about the universe, science, and learning new things about the night sky.

**Highlights:** Daily NASA space images, Simple explanations of celestial phenomena, Interesting astronomy facts, Stargazing tools, Upcoming space event notifications

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

**In-app purchases:** none


## Frequently asked questions

### Is 3D Solar System Tour free?

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

### Is Astro! free?

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

### Do 3D Solar System Tour or Astro! have ads?

3D Solar System Tour shows ads; Astro! does not.

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

3D Solar System Tour ships an update every 3 weeks, and Astro! every 6 weeks. Most recently, 3D Solar System Tour was updated on October 30, 2026 and Astro! on October 31, 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.*