Comparison

Enigma JS vs FullstackQuiz

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Enigma JS

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
Read full description

Enigma is a JavaScript quiz app featuring the most common interview questions. Here, you’ll find tricky parts of JavaScript language and the key concepts essential for React and React Native developers. Whether you are an experienced developer or a beginner, you'll find questions and explanations in this app that will help you learn and practice. Some quizzes are designed to understand the basics, while others targeting tricky parts of the Javascript language that we developers encounter time to time. - Refresh your knowledge by having quick quizzes anywhere during your day. - Stay up-to-date by learning and practicing tricky parts of the language. - For each question see detailed explanations that are designed to help you comprehend the concepts.

About

FullstackQuiz

Features
Read full description

Congratulations! You've found the most popular, most complete, and most up-to-date resource online in 2021 for learning and testing yourself in insightful Frontend modules and other awesome stuffs (like Backend, DevOps in near future) ! Thousands of other engineers have tested themselves, and you should too. This app uses a time-tested, battle-proven method to make sure you understand exactly how questions ask, and will get you a new job working as a software engineer or help you review your knowledge just in 5 minutes. THE DIFFERENCE BETWEEN THIS APP AND ALL THE OTHERS ? You will get all the most up-to-date, concise, in-depth content crafted with love, collected and reviewed carefully. THE BIGGEST CHALLENGES WITH SELF-QUIZ ? One of the biggest challenges with self-quiz is the vast sea of low-grade internet learning content. You're going to spend countless hours wading through out-of-date, low-effort, inconsistent, and often wrong blog posts across the internet trying to understand how correct answer is, and why it is correct. - Books are out of date. - Blog posts are full of annoying advertisements - Articles are old, stale and filled with bad advice. WHAT WILL YOU LEARN AND QUIZ ? TheFullstackQuiz features hundreds of questions with dozens of up-to-date explanations to help you understand how answer is. No prior experience is necessary. Below is a partial list of the topics you'll find in this app: - Learn Javascript questions tested in the largest companies. - Understand when and why to use testing framework, test runner, assertion library in React module. - Drastically Improve Your CSS Knowledge in 1 hour.
 
 I built this app to save you and myself hundreds of hours of self-search online. I've put years of my own experience into this app to save you time.  Download today and enjoy quizzing in mastering knowledge.

Screenshots

Enigma JS4 screens
FullstackQuiz4 screens

Verdict

The call

The clearest difference is ads: FullstackQuiz at none against Enigma JS's shown. FullstackQuiz also leads on update cadence (every 3 days vs every 14 months) and iOS requirement (10.0 vs 15.1). On price, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Enigma JS sells 1 one-off in-app purchase and FullstackQuiz sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Enigma JS ships an update every 14 months, FullstackQuiz every 3 days. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

Scorecard3 real differences · 5 level
Enigma JS versus FullstackQuiz: the parameters behind the verdict, then further details
ParameterEnigma JSFullstackQuiz
PriceFreeFree
Positive reviews25.0% of reviews—
Update frequencyEvery 14 monthsEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.110.0 — better
Further details — not scored
Size59 MB26 MB
Age rating4+4+
DeveloperYesno LabsTrieu Tran

In-app purchases

1 purchases

Enigma JS

One-time1
  • Remove ads and unlock content$9.99
1 purchases

FullstackQuiz

One-time1
  • 2.99$ For All Premium Features$2.99

Questions

Is Enigma JS free?
Enigma JS is free to download, with in-app purchases available.
Is FullstackQuiz free?
FullstackQuiz is free to download, with in-app purchases available.
Do Enigma JS or FullstackQuiz have ads?
Enigma JS shows ads; FullstackQuiz does not.
Which is updated more often, Enigma JS or FullstackQuiz?
Enigma JS ships an update every 14 months, and FullstackQuiz every 3 days. Most recently, Enigma JS was updated on October 15, 2026 and FullstackQuiz on October 4, 2026.

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