# Enigma JS vs Web Programming Interview Prep

The clearest difference is in-app purchases: Web Programming Interview Prep at none against Enigma JS's 1. Web Programming Interview Prep also leads on update cadence (daily vs every 14 months) and iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Enigma JS sells 1 one-off in-app purchase. Web Programming Interview Prep asks for nothing beyond the download.

Enigma JS ships an update every 14 months, Web Programming Interview Prep daily. The most recent releases landed on September 8, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | Enigma JS | Web Programming Interview Prep |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 14 months | **Daily** |
| Monetization | Free with in-app purchases | — |
| Size | 59 MB | 75 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) | [Oleksii Petrochenko](https://appshunter.io/developer/1669228110) |

## 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 |


### Web Programming Interview Prep

[App page](https://appshunter.io/ios/app/web-programming-interview-prep/id6642642458)

**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 Web Programming Interview Prep free?

Web Programming Interview Prep is free to download, with no in-app purchases.

### Do Enigma JS or Web Programming Interview Prep have ads?

Both Enigma JS and Web Programming Interview Prep show ads.

### Which is updated more often, Enigma JS or Web Programming Interview Prep?

Enigma JS ships an update every 14 months, and Web Programming Interview Prep daily. Most recently, Enigma JS was updated on September 8, 2026 and Web Programming Interview Prep on September 5, 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.*