# Mag Galaxy vs Star Explorer：星空观测

The clearest difference is in-app purchases: Mag Galaxy at none against Star Explorer：星空观测's 1. Mag Galaxy also leads on iOS requirement (13.1 vs 17.0). Star Explorer：星空观测's advantage is update cadence (every 2 days vs every 8 months). On price, ads and device support there is nothing between them.

Both are free to download. Star Explorer：星空观测 sells 1 one-off in-app purchase. Mag Galaxy asks for nothing beyond the download.

Mag Galaxy ships an update every 8 months, Star Explorer：星空观测 every 2 days. Both last shipped on October 8, 2026.

## The numbers

| Metric | Mag Galaxy | Star Explorer：星空观测 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 2 days** |
| Size | 3 MB | 22 MB |
| Requires iOS | **13.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Claude Duplessis](https://appshunter.io/developer/1591450006) | [Beijing XingheBit Science & Technology Development Co., Ltd.](https://appshunter.io/developer/1882505330) |

## What reviewers say

### Mag Galaxy

[App page](https://appshunter.io/ios/app/mag-galaxy/id1618628375)

**Features:** macOS Compatibility

**In-app purchases:** none


### Star Explorer：星空观测

[App page](https://appshunter.io/ios/app/star-explorer/id6799640893)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Star Explorer Pro 买断 | $12.99 | one-time |


## Frequently asked questions

### Is Mag Galaxy free?

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

### Is Star Explorer：星空观测 free?

Star Explorer：星空观测 is free to download, with in-app purchases available.

### Do Mag Galaxy or Star Explorer：星空观测 have ads?

Neither Mag Galaxy nor Star Explorer：星空观测 shows ads.

### Which is updated more often, Mag Galaxy or Star Explorer：星空观测?

Mag Galaxy ships an update every 8 months, and Star Explorer：星空观测 every 2 days. Most recently, Mag Galaxy was updated on October 8, 2026 and Star Explorer：星空观测 on October 8, 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.*