Comparison

JavaScript Manual vs InterviewGenie

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

Head to head
About

JavaScript Manual

An offline, ad-free guide to JavaScript, covering its core guide, built-in objects, and Web API. Access comprehensive documentation without an internet connection.

Highlights
  • JavaScript guide
  • Built-in objects
  • Web API documentation
  • Offline access
  • Ad-free experience
Features
Read full description

JavaScript Manual - Complete Offline Reference Your go-to companion for JavaScript development. Read everything from ES6+ basics to Web APIs anytime, anywhere - fully offline. Three core modules: - JavaScript Guide: variables, functions, closures, async/await, prototypes and modern ES6+ syntax - Built-in Objects: Array, Object, String, Number, Date, RegExp, Map, Set, Promise and more, with methods and examples - Web API: DOM, Fetch, Storage, Canvas, WebSocket and browser interfaces Why developers love it: - 100% offline - all content stored on your device - Zero ads - clean, distraction-free reading - Lightweight and fast - built for quick lookups Perfect for learning, coding reference, interview prep, and offline study. Questions or feedback? Contact: devspera@outlook.com

About

InterviewGenie

Features
Read full description

Interview Genie: Your AI-Powered React Interview Coach Interview Genie is the all-in-one training ground built by developers, for developers. Stop passively reading and start actively preparing with a suite of powerful tools tailored to sharpen your React, JavaScript, TypeScript, and front-end architecture skills—so you can build confidence and land your next React role. Whether you’re a junior developer preparing for your first React interview or a senior engineer aiming for a lead position, Interview Genie adapts your learning path to focus on what really matters—React fundamentals, hooks, state management, performance optimization, component design, testing, and real-world coding challenges. AI-Powered Mock Interviews • Engage with an AI Coach in realistic interview sessions via text or voice • Receive instant, detailed feedback across Clarity, Correctness, and Depth • Use consumable AI credits to analyze your answers and improve faster On-Device AI Processing • AI inference is performed directly on your device for faster, low-latency feedback • Reduces round-trip delays while keeping sensitive input processing local • Designed for efficient, native performance Intelligent Spaced Repetition (SRS) • Daily Review: Smart scheduling resurfaces questions at the right time for long-term retention • Buggy Code Review: Daily sessions focused on identifying and fixing common React and JavaScript issues Customizable Drills & Practice • Simulate real interview pressure with timed Performance Drills • Practice freely in the Practice Arena (untimed) • Customize sessions by question type (MCQ or open-ended), difficulty, and React-specific topics Comprehensive Study Guide • Deep dives into React fundamentals, hooks, lifecycle patterns, state management, performance, testing, and system design • Each topic includes explanations, best practices, examples, and common interview mistakes Widgets for Daily Tracking • Daily review and progress widgets to track your preparation at a glance • Monitor streaks, completed drills, and performance without opening the app Detailed Analytics & History • Review performance across all sessions in one place • Track accuracy, speed, and consistency with clear insights • Filter by topic or session type to identify gaps and blind spots Competitive Progress Tracking • Compare progress across drills and mock interviews • Track improvement over time and stay motivated Unlock Everything with a Subscription • Full access to the React Study Guide • Unlimited drills and topic-based practice • Daily SRS and Buggy Code sessions • AI credits for coaching and feedback • Option to purchase additional AI credits Stop memorizing. Start understanding. Download Interview Genie and take control of your interview preparation today.

Screenshots

JavaScript Manual4 screens
InterviewGenie4 screens

Verdict

The call

The clearest difference is in-app purchases: JavaScript Manual at none against InterviewGenie's 10. JavaScript Manual also leads on iOS requirement (15.0 vs 17.0). InterviewGenie's advantage is update cadence (every 5 months vs every 31 months). On price, ads 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. InterviewGenie sells 10 one-off in-app purchases. JavaScript Manual asks for nothing beyond the download.

UpkeepUpdate frequency

JavaScript Manual ships an update every 31 months, InterviewGenie every 5 months. The most recent releases landed on September 20, 2026 and September 21, 2026 respectively.

Scorecard3 real differences · 7 level
JavaScript Manual versus InterviewGenie: the parameters behind the verdict, then further details
ParameterJavaScript ManualInterviewGenie
PriceFreeFree
Rating5.0 (2 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 31 monthsEvery 5 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPodiPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size34 MB14 MB
Age rating4+4+
DeveloperHua YangAbhinav Jha

In-app purchases

None

JavaScript Manual

No in-app purchases

10 purchases

InterviewGenie

One-time10
  • Coach Top-Up$1.99
  • Drill Top-Up$1.99
  • Lite Pack$3.99
Show 7 more
  • Unlock All Access$5.99
  • On-Device AI Pack$7.99
  • Unlock + AI Lite$8.99
  • Plus Pack$8.99
  • Unlock + On-Device AI$12.99
  • AI Max + Free Unlock$14.99
  • Max Pack$14.99

Questions

Is JavaScript Manual free?
JavaScript Manual is free to download, with no in-app purchases.
Is InterviewGenie free?
InterviewGenie is free to download, with in-app purchases available.
Do JavaScript Manual or InterviewGenie have ads?
Neither JavaScript Manual nor InterviewGenie shows ads.
Which is updated more often, JavaScript Manual or InterviewGenie?
JavaScript Manual ships an update every 31 months, and InterviewGenie every 5 months. Most recently, JavaScript Manual was updated on September 20, 2026 and InterviewGenie on September 21, 2026.

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