# Enigma JS vs SDET Interview Coach

The clearest difference is ads: SDET Interview Coach at none against Enigma JS's shown. SDET Interview Coach also leads on update cadence (every 3 days vs every 14 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Enigma JS sells 1 one-off in-app purchase and SDET Interview Coach sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Enigma JS ships an update every 14 months, SDET Interview Coach every 3 days. The most recent releases landed on October 15, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Enigma JS | SDET Interview Coach |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 14 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 44 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Yesno Labs](https://appshunter.io/developer/1704491583) | [Mitchell Agoma](https://appshunter.io/developer/1863538002) |

## 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 |


### SDET Interview Coach

[App page](https://appshunter.io/ios/app/sdet-interview-coach/id6763396692)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| SDET Coach Pro - Monthly | $5.99 | per month |
| SDET Coach Pro - Annual | $69.99 | per year |


## Frequently asked questions

### Is Enigma JS free?

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

### Is SDET Interview Coach free?

SDET Interview Coach is free to download, with in-app purchases available.

### Do Enigma JS or SDET Interview Coach have ads?

Enigma JS shows ads; SDET Interview Coach does not.

### Which is updated more often, Enigma JS or SDET Interview Coach?

Enigma JS ships an update every 14 months, and SDET Interview Coach every 3 days. Most recently, Enigma JS was updated on October 15, 2026 and SDET Interview Coach on October 28, 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.*