# Enigma JS vs JavaScript Compiler

The clearest difference is in-app purchases: JavaScript Compiler at none against Enigma JS's 1. JavaScript Compiler also leads on ads (none vs shown) and update cadence (every 4 months vs every 14 months). Enigma JS's advantage is review sentiment (29% vs 0%). On price and device support there is nothing between them.

Both are free to download. Enigma JS sells 1 one-off in-app purchase. JavaScript Compiler asks for nothing beyond the download.

Enigma JS ships an update every 14 months, JavaScript Compiler every 4 months. The most recent releases landed on September 8, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Enigma JS | JavaScript Compiler |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.7 (3 ratings)](https://appshunter.io/ios/app/javascript-compiler-run-js/id1546362047/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | **28.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 14 months | **Every 4 months** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 59 MB | 28 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yesno Labs](https://appshunter.io/developer/1704491583) | [OnePercent](https://appshunter.io/developer/1536020418) |

## 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

**In-app purchases (1)**

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


### JavaScript Compiler

[App page](https://appshunter.io/ios/app/javascript-compiler-run-js/id1546362047)

This app provides a mobile environment to compile and run JavaScript programs. It features a code editor with syntax highlighting, exercise questions, and pre-written DSA programs to aid learning. It's completely free and ad-free for all users.

**Highlights:** Compile and run JavaScript programs, Code editor with syntax highlighting, Exercise questions for skill improvement, Includes general DSA programs with code, Programming and computer science fun facts

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Enigma JS free?

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

### Is JavaScript Compiler free?

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

### Do Enigma JS or JavaScript Compiler have ads?

Enigma JS shows ads; JavaScript Compiler does not.

### Which is updated more often, Enigma JS or JavaScript Compiler?

Enigma JS ships an update every 14 months, and JavaScript Compiler every 4 months. Most recently, Enigma JS was updated on September 8, 2026 and JavaScript Compiler on September 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.*