JavaScript Manual vs InterviewGenie
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- JavaScript guide
- Built-in objects
- Web API documentation
- Offline access
- Ad-free experience
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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
InterviewGenie
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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.
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Verdict
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
Both are free to download. InterviewGenie sells 10 one-off in-app purchases. JavaScript Manual asks for nothing beyond the download.
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.
| Parameter | JavaScript Manual | InterviewGenie |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 31 months | Every 5 months — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 34 MB | 14 MB |
| Age rating | 4+ | 4+ |
| Developer | Hua Yang | Abhinav Jha |
In-app purchases
JavaScript Manual
No in-app purchases
InterviewGenie
- Coach Top-Up$1.99
- Drill Top-Up$1.99
- Lite Pack$3.99
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- 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?
Is InterviewGenie free?
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Which is updated more often, JavaScript Manual or InterviewGenie?
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