# Enigma JS vs Learning Hardware

The clearest difference is ads: Learning Hardware at none against Enigma JS's shown. Learning Hardware also leads on update cadence (every 8 days vs every 14 months) and iOS requirement (13.0 vs 15.1). On price, 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 Learning Hardware sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Enigma JS ships an update every 14 months, Learning Hardware every 8 days. The most recent releases landed on September 8, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | Enigma JS | Learning Hardware |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 14 months | **Every 8 days** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 267 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yesno Labs](https://appshunter.io/developer/1704491583) | [Airton Siqueira de Freitas](https://appshunter.io/developer/1809776051) |

## 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 |


### Learning Hardware

[App page](https://appshunter.io/ios/app/learning-hardware/id6794719216)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full access discount | $0.99 | one-time |
| Full access | $0.99 | one-time |
| CERTIFICATE | $2.99 | one-time |
| FULL PASS ALL APPS | $17.99 | one-time |


## Frequently asked questions

### Is Enigma JS free?

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

### Is Learning Hardware free?

Learning Hardware is free to download, with in-app purchases available.

### Do Enigma JS or Learning Hardware have ads?

Enigma JS shows ads; Learning Hardware does not.

### Which is updated more often, Enigma JS or Learning Hardware?

Enigma JS ships an update every 14 months, and Learning Hardware every 8 days. Most recently, Enigma JS was updated on September 8, 2026 and Learning Hardware 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.*