# Enigma JS vs React Quiz

The clearest difference is update cadence: React Quiz at monthly against Enigma JS's every 14 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Enigma JS sells 1 one-off in-app purchase and React Quiz sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Enigma JS ships an update every 14 months, React Quiz monthly. The most recent releases landed on October 15, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Enigma JS | React Quiz |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 83 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yesno Labs](https://appshunter.io/developer/1704491583) | [Creatopia Inc.](https://appshunter.io/developer/1523447963) |

## What reviewers say

### Enigma JS

[App page](https://appshunter.io/ios/app/enigma-js-interview-questions/id1308401829)

This app offers JavaScript quizzes covering common interview questions for web and mobile developers. It provides detailed explanations to help users learn and practice tricky language concepts and essential React/React Native knowledge.

**Highlights:** Common JavaScript interview questions, React and React Native concepts, Detailed explanations for each question, Quizzes for beginners and experienced developers, Practice tricky language parts

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads and unlock content | $9.99 | one-time |


### React Quiz

[App page](https://appshunter.io/ios/app/react-quiz-learn-with-ai/id6739236583)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $0.99 | per 7 days |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $24.99 | per year |


## Frequently asked questions

### Is Enigma JS free?

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

### Is React Quiz free?

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

### Do Enigma JS or React Quiz have ads?

Both Enigma JS and React Quiz show ads.

### Which is updated more often, Enigma JS or React Quiz?

Enigma JS ships an update every 14 months, and React Quiz monthly. Most recently, Enigma JS was updated on October 15, 2026 and React Quiz on October 9, 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.*