# 天球模擬器 vs GalacticAR for Education

The clearest difference is price: 天球模擬器 at Free against GalacticAR for Education's $4.99. 天球模擬器 also leads on update cadence (every 3 days vs every 3 months) and iOS requirement (13.0 vs 26.0). GalacticAR for Education's advantage is device support (6 vs 3). On ads and in-app purchases there is nothing between them.

天球模擬器 is free to download; GalacticAR for Education costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

天球模擬器 ships an update every 3 days, GalacticAR for Education every 3 months. The most recent releases landed on October 25, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | 天球模擬器 | GalacticAR for Education |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/galacticar-for-education/id6761950044/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 months |
| Monetization | — | Paid |
| Size | 19 MB | 222 MB |
| Requires iOS | **13.0** | 26.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, Mac, Apple TV, Apple Watch, Vision Pro** |
| Age rating | 4+ | 4+ |
| Developer | [Han-Chiang Chou](https://appshunter.io/developer/1883578938) | [Vielfalt Software e.U.](https://appshunter.io/developer/1666796449) |

## What reviewers say

### 天球模擬器

[App page](https://appshunter.io/ios/app/id6760458030)

**Features:** macOS Compatibility

**In-app purchases:** none


### GalacticAR for Education

[App page](https://appshunter.io/ios/app/galacticar-for-education/id6761950044)

Explore the universe with interactive 3D models and an extensive encyclopedia. Test your knowledge with over 300 quiz questions covering comets, planets, galaxies, and more. Ideal for students and educators seeking a comprehensive astronomy learning experience.

**Highlights:** 300 quiz questions, 121 astronomical topics, 43 interactive 3D models, 16 immersive outer space scenes, 9 main astronomy categories, 6 language options

**Features:** Apple Watch app, iPhone Duo support

**In-app purchases:** none


## Frequently asked questions

### Is 天球模擬器 free?

天球模擬器 is free to download, with no in-app purchases.

### Is GalacticAR for Education free?

GalacticAR for Education costs $4.99, with no in-app purchases.

### Do 天球模擬器 or GalacticAR for Education have ads?

Neither 天球模擬器 nor GalacticAR for Education shows ads.

### Which is updated more often, 天球模擬器 or GalacticAR for Education?

天球模擬器 ships an update every 3 days, and GalacticAR for Education every 3 months. Most recently, 天球模擬器 was updated on October 25, 2026 and GalacticAR for Education on November 10, 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.*