# Prism Lab vs Astronomy Game

The clearest difference is rating: Astronomy Game at 4.4 against Prism Lab's 3.3. Astronomy Game also leads on update cadence (every 13 months vs every 216 months). Prism Lab's advantage is in-app purchases (none vs 1) and ratings volume (287 vs 10). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Astronomy Game sells 1 one-off in-app purchase. Prism Lab asks for nothing beyond the download.

Astronomy Game holds the better App Store score, 4.4 against 3.3. That said, the two scores are not equally well evidenced: Prism Lab has 287 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 80% of Prism Lab's written reviews are positive against 86% of Astronomy Game's.

Prism Lab ships an update every 216 months, Astronomy Game every 13 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Prism Lab | Astronomy Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (287 ratings)](https://appshunter.io/ios/app/prism-lab/id301875263/reviews) | **[4.4 (10 ratings)](https://appshunter.io/ios/app/astronomy-game/id1501300649/reviews)** |
| Number of ratings | **287** | 10 |
| Positive reviews | 80.0% of reviews | **85.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 216 months | **Every 13 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 2 MB | 49 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [KZ Labs](https://appshunter.io/developer/1091008972) | [Horea Bucerzan](https://appshunter.io/developer/1459301615) |

## What reviewers say

### Prism Lab

[App page](https://appshunter.io/ios/app/prism-lab/id301875263)

This application simulates lasers passing through prisms, demonstrating light refraction and reflection using Snell's Law. Users can adjust light sources, materials, and prism shapes to observe how light's trajectory changes between environments. It's a practical tool for understanding optical principles.

**Highlights:** Laser refraction simulation, Snell's Law implementation, Adjustable light source, Variable prism shapes, Different material options, Angle calculation

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

**In-app purchases:** none


### Astronomy Game

[App page](https://appshunter.io/ios/app/astronomy-game/id1501300649)

Explore the cosmos and expand your knowledge of space. This educational application covers planets, our solar system, and galaxies, making learning about the universe engaging and accessible.

**Highlights:** Learn about planets, Explore the solar system, Discover galaxies, Improve general knowledge, Educational content

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Extra Content + Ad-Free | $3.99 | one-time |


## Frequently asked questions

### Is Prism Lab free?

Prism Lab is free to download, with no in-app purchases.

### Is Astronomy Game free?

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

### Which has better reviews, Prism Lab or Astronomy Game?

Astronomy Game is rated higher. Prism Lab averages 3.3 out of 5 from 287 ratings, while Astronomy Game averages 4.4 from 10 ratings.

### Do Prism Lab or Astronomy Game have ads?

Neither Prism Lab nor Astronomy Game shows ads.

### Which is updated more often, Prism Lab or Astronomy Game?

Prism Lab ships an update every 216 months, and Astronomy Game every 13 months. Most recently, Prism Lab was updated on October 23, 2026 and Astronomy Game on October 24, 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.*