# Enigma JS vs Learn Containers with Docker

The clearest difference is price: Enigma JS at Free against Learn Containers with Docker's $4.99. Enigma JS also leads on iOS requirement (15.1 vs 17.0). Learn Containers with Docker's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Enigma JS is free to download; Learn Containers with Docker costs $4.99 up front. Enigma JS sells 1 one-off in-app purchase. Learn Containers with Docker asks for nothing beyond the download.

Enigma JS ships an update every 14 months, Learn Containers with Docker every 6 months. The most recent releases landed on October 15, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Enigma JS | Learn Containers with Docker |
| --- | --- | --- |
| Price | **Free** | $4.99 |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 14 months | **Every 6 months** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 10 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Yesno Labs](https://appshunter.io/developer/1704491583) | [ALG Software Lab](https://appshunter.io/developer/1650561236) |

## 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 |


### Learn Containers with Docker

[App page](https://appshunter.io/ios/app/learn-containers-with-docker/id6749623110)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Enigma JS free?

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

### Is Learn Containers with Docker free?

Learn Containers with Docker costs $4.99, with no in-app purchases.

### Do Enigma JS or Learn Containers with Docker have ads?

Enigma JS shows ads; Learn Containers with Docker does not.

### Which is updated more often, Enigma JS or Learn Containers with Docker?

Enigma JS ships an update every 14 months, and Learn Containers with Docker every 6 months. Most recently, Enigma JS was updated on October 15, 2026 and Learn Containers with Docker on October 12, 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.*