# Celestia vs Scratch案例教程

The clearest difference is review sentiment: Celestia at 78% against Scratch案例教程's 9%. Celestia also leads on rating (4.4 vs 3.0) and update cadence (every 2 weeks vs every 3 months). Scratch案例教程's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Celestia sells 4 in-app purchases, starting at $0.99 per 7 days and Scratch案例教程 sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Celestia holds the better App Store score, 4.4 against 3.0. That said, the two scores are not equally well evidenced: Celestia has 324 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of Celestia's written reviews are positive against 9% of Scratch案例教程's.

Celestia ships an update every 2 weeks, Scratch案例教程 every 3 months. Both last shipped on September 25, 2026.

## The numbers

| Metric | Celestia | Scratch案例教程 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (324 ratings)](https://appshunter.io/ios/app/celestia-space-simulator/id1500434829/reviews)** | [3.0 (2 ratings)](https://appshunter.io/ios/app/scratch/id6473737600/reviews) |
| Number of ratings | **324** | 2 |
| Positive reviews | **78.3% of reviews** | 9.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 545 MB | 139 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [林峰 李](https://appshunter.io/developer/1186547508) | [剑 林](https://appshunter.io/developer/1466914836) |

## What reviewers say

### Celestia

[App page](https://appshunter.io/ios/app/celestia-space-simulator/id1500434829)

Explore the universe in real-time 3D. Visit planets, moons, star clusters, and galaxies, viewing them from any point in space and time. Customize your experience with expandable content and detailed simulations.

**Highlights:** Real-time 3D space visualization, Explore planets, moons, stars, galaxies, Accurate solar system object positions, Interactive planetarium mode, Expandable content with add-ons, Customizable celestial databases

**Features:** Game Controller support, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Celestia PLUS (Weekly) | $0.99 | per 7 days |
| Celestia PLUS (Monthly) | $1.99 | per month |
| Celestia PLUS (Yearly) | $19.99 | per year |
| Celestia PLUS (Lifetime) | $79.99 | one-time |

**What reviewers like**

- ⭐ Realistic space simulation
- 🌌 Ability to explore galaxies and star systems
- 🔍 Detailed planet and moon textures
- 📷 Great for taking screenshots
- 🤖 Reminds users of Space Engine

**What reviewers complain about**

- 🐛 Occasional crashes and glitches
- 🌌 Limited exploration beyond Milky Way and Andromeda
- 🌍 Flat terrain on planets
- 🔍 Lack of detail on some celestial objects
- 🔒 Paywall for some features

**Reported bugs**

- Milky Way and other galaxy textures not loading properly
- Crashes when using certain add-ons
- Issues with planet and moon orbits not being accurate

**Requested features**

- Add more exoplanets and distant star systems
- Implement terrain generation for planets
- Expand to include more galaxies and the overall universe structure
- Add support for black holes, pulsars, and other exotic objects
- Improve controls and camera movement


### Scratch案例教程

[App page](https://appshunter.io/ios/app/scratch/id6473737600)

Learn visual programming with this comprehensive course designed for children and beginners. Create animations, games, and interactive stories using a drag-and-drop interface. Develop creativity and problem-solving skills through engaging coding activities.

**Highlights:** Visual programming for kids, Create animations and games, Drag-and-drop coding interface, Develop creativity, Enhance logical thinking, Interactive stories

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁初级篇教程 | $1.99 | one-time |
| 解锁高级教程 | $12.99 | one-time |
| 解锁所有教程 | $14.99 | one-time |

**What reviewers like**

- 👍 Can be useful for learning coding
- 👍 Some users find it educational
- 👍 Works for those who understand Chinese
- 👍 Tutorials are available (though in Chinese)

**What reviewers complain about**

- ❌ Primarily in Chinese
- ❌ No English language option
- ❌ Confusing for non-Chinese speakers
- ❌ Not the official Scratch app
- ❌ Difficult to navigate without understanding Chinese

**Reported bugs**

- Cannot change language
- App cannot be deleted
- App is stuck on one language
- Lost progress due to no save feature

**Requested features**

- Add English language support
- Add Vietnamese language support
- Make the app multicultural
- Add a save feature
- Allow users to create animations/code


## Frequently asked questions

### Is Celestia free?

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

### Is Scratch案例教程 free?

Scratch案例教程 is free to download, with in-app purchases available.

### Which has better reviews, Celestia or Scratch案例教程?

Celestia is rated higher. Celestia averages 4.4 out of 5 from 324 ratings, while Scratch案例教程 averages 3.0 from 2 ratings.

### Do Celestia or Scratch案例教程 have ads?

Neither Celestia nor Scratch案例教程 shows ads.

### Which is updated more often, Celestia or Scratch案例教程?

Celestia ships an update every 2 weeks, and Scratch案例教程 every 3 months. Most recently, Celestia was updated on September 25, 2026 and Scratch案例教程 on September 25, 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.*