Enigma JS: Interview questions

Enigma JS: Interview questions

JavaScript and React Native

0 ratings
7 reviews
Free
In-App PurchasesWith Ads

Details

  • Released
  • Updated
  • November 11, 2017
  • June 10, 2025

Features

Enigma JS: Interview questions screenshot #1 for iPhone
Enigma JS: Interview questions screenshot #2 for iPhone
Enigma JS: Interview questions screenshot #3 for iPhone
Enigma JS: Interview questions screenshot #4 for iPhone
Enigma JS: Interview questions screenshot #5 for iPhone
Enigma JS: Interview questions screenshot #6 for iPhone
Enigma JS: Interview questions screenshot #7 for iPhone
Enigma JS: Interview questions screenshot #8 for iPhone
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About

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.

Common JavaScript interview questions
React and React Native concepts
Detailed explanations for each question
Quizzes for beginners and experienced developers
Practice tricky language parts
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What's New in Enigma JS

3.0.2

June 10, 2025

- Content improvements

1

In-App Purchases

$9.99

Remove ads and unlock content

Remove ads and unlock all questions.

User reviews

Some incorrect answers

I like this app - great for learning or a fresher. I have found some answers are incorrect

Good idea - needs some work.

I was looking for an app to keep my programming skills up and test my knowledge throughout the day. I downloaded Enigma and was not impressed. For one, the application is not optimized for newer devices. It doesn’t fit the screen of my iPhone XR. In terms of the actual quizzes, they need a lot of work done. Not enough context is given, so basic questions can easily be wrong. Leaving out info like what method (const, let, var...) a variable is defined can severely impact the result of an expression, and i’ve gotten several answers wrong because of this. We need an app like this so I kindly request some work to be done. Thank-you.
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Good, not great

The content itself in this app is good. I have enjoyed taking the quizzes, and they have helped me. However, like another user wrote, there is ver little content and the ads drive me crazy.

hata

Uygulama ilk soruda kapanıyor

Ad bananas

Way too many ads, way too little content. Great concept. But very frustrating.

Developer apps

FAQ

What is Enigma JS?

Enigma JS is a free mobile application designed to help developers practice and prepare for JavaScript, React, and React Native interviews. It features common interview questions with detailed explanations to reinforce learning.

What kind of questions does Enigma JS cover?

Enigma JS covers tricky parts of the JavaScript language, essential concepts for React developers, and key elements for React Native developers. The quizzes are designed for both beginners and experienced programmers.

Does Enigma JS offer offline access?

The description suggests users can refresh their knowledge by having quick quizzes anywhere during their day, implying offline accessibility for practice sessions.

How does Enigma JS help users learn?

For each question, Enigma JS provides detailed explanations designed to help users comprehend the concepts. This feature aids in both learning new material and reinforcing existing knowledge.

What is the update frequency for Enigma JS?

The app was last updated on June 10, 2025, indicating active development and maintenance. Users can expect ongoing improvements and content additions.

Is Enigma JS suitable for beginners?

Yes, Enigma JS includes quizzes designed to help beginners understand the basics of JavaScript, React, and React Native, alongside more advanced questions for experienced developers.

Does Enigma JS have ads?

Yes, the application contains advertisements. It also offers in-app purchases, suggesting a model where ads may be removed or additional content unlocked.

What platforms is Enigma JS available on?

Enigma JS is available for iPhone, iPad, and iPod devices, as indicated by its supported devices list.