# Decodoku vs Quantum Quiz App

The clearest difference is update cadence: Decodoku at every 3 months against Quantum Quiz App's every 12 months. Decodoku also leads on iOS requirement (8.0 vs 14.2). On price, rating, review sentiment and ratings volume 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 Quiz App. Both are backed by a comparable volume of ratings — 3 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

Decodoku ships an update every 3 months, Quantum Quiz App every 12 months. The most recent releases landed on October 12, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Decodoku | Quantum Quiz App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/decodoku/id1093080064/reviews) | [5.0 (3 ratings)](https://appshunter.io/ios/app/quantum-quiz-app/id1529418013/reviews) |
| Number of ratings | 3 | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 12 months |
| Monetization | Free | Free |
| Size | 52 MB | 97 MB |
| Requires iOS | **8.0** | 14.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [James Robin Wootton](https://appshunter.io/developer/1093080063) | [Toptica Photonics AG](https://appshunter.io/developer/919586983) |

## 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 Quiz App

[App page](https://appshunter.io/ios/app/quantum-quiz-app/id1529418013)

Test and improve your knowledge of quantum technologies with this engaging quiz app. Play solo or compete with others in multiplayer modes, with over 800 questions across three difficulty levels. Submit your own questions to contribute to the growing library.

**Highlights:** Improve quantum technology knowledge, Solo and multiplayer modes, Over 800 questions, Three difficulty levels, Submit your own questions, Monthly high score reset

**In-app purchases:** none


## Frequently asked questions

### Is Decodoku free?

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

### Is Quantum Quiz App free?

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

### Which has better reviews, Decodoku or Quantum Quiz App?

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

### Do Decodoku or Quantum Quiz App have ads?

Neither Decodoku nor Quantum Quiz App shows ads.

### Which is updated more often, Decodoku or Quantum Quiz App?

Decodoku ships an update every 3 months, and Quantum Quiz App every 12 months. Most recently, Decodoku was updated on October 12, 2026 and Quantum Quiz App on October 16, 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.*