# Decodoku vs Quantum 3

The clearest difference is update cadence: Decodoku at every 3 months against Quantum 3's every 16 months. Decodoku also leads on iOS requirement (8.0 vs 12.0). Quantum 3's advantage is ratings volume (15 vs 3). On price, rating, review sentiment and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for Decodoku against 5.0 for Quantum 3. That said, the two scores are not equally well evidenced: Quantum 3 has 15 ratings behind it against 3, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

Decodoku ships an update every 3 months, Quantum 3 every 16 months. The most recent releases landed on September 26, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Decodoku | Quantum 3 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/decodoku/id1093080064/reviews) | [5.0 (15 ratings)](https://appshunter.io/ios/app/quantum-3/id1406630529/reviews) |
| Number of ratings | 3 | **15** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 16 months |
| Monetization | Free | Free |
| Size | 52 MB | 124 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Robin Wootton](https://appshunter.io/developer/1093080063) | [Brian Winn](https://appshunter.io/developer/487088992) |

## What reviewers say

### Decodoku

[App page](https://appshunter.io/ios/app/decodoku/id1093080064)

Engage in a unique puzzle game that doubles as a tool for scientific research in quantum error correction. Solve complex challenges to help advance the development of real-life quantum computers. Explore the science behind the game on the developer's website.

**Highlights:** Quantum puzzle gameplay, Scientific research tool, Quantum error correction, Advance quantum computing, Educational science content

**In-app purchases:** none


### Quantum 3

[App page](https://appshunter.io/ios/app/quantum-3/id1406630529)

An educational match-3 game that blends fun gameplay with quantum physics concepts. Players match quarks to build subatomic particles and learn about fundamental physics mysteries. It's a great introduction to particle physics for all ages.

**Highlights:** Match-3 gameplay, Learn quantum physics, Build subatomic particles, Explore fundamental physics, Puzzle-solving mechanics

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Decodoku free?

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

### Is Quantum 3 free?

Quantum 3 is free to download, with no in-app purchases.

### Which has better reviews, Decodoku or Quantum 3?

Decodoku and Quantum 3 are both rated 5.0 out of 5 on the App Store, from 3 and 15 ratings respectively.

### Do Decodoku or Quantum 3 have ads?

Neither Decodoku nor Quantum 3 shows ads.

### Which is updated more often, Decodoku or Quantum 3?

Decodoku ships an update every 3 months, and Quantum 3 every 16 months. Most recently, Decodoku was updated on September 26, 2026 and Quantum 3 on October 3, 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.*