React Interview

Master modern web development one concept at a time. Learn React and Next.js with structured lessons, daily challenges, quizzes and interview practice, all in one app.

Every lesson explains what a concept is, why it matters, when to use it and how it works, so you build real understanding instead of memorising snippets.

TWO LEARNING TRACKS, 116 LESSONS
• React track: 60 lessons, from fundamentals to advanced topics
• Next.js track: 56 lessons, from fundamentals to production-ready apps
• Lessons grouped into categories such as Components, JSX, Props & State, Events & Forms, Hooks, App Router, Routing, Layouts, Server Components and Client Components
• Search lessons and pick up right where you left off

INTERVIEW PREP, 150 QUESTIONS
• 50 Easy, 50 Medium and 50 Hard questions across React and Next.js
• Topics include hooks, rendering, data fetching, performance, caching, routing, server components and architecture scenarios
• Browse questions by topic or start a random interview of 10 questions across all levels
• Mark questions as known and bookmark the ones you want to revisit

QUIZ MODE, 250 MCQs
• Choose how many questions to answer: 5, 10, 20, 30 or 50
• Filter by topic (React, Next.js or all) and by difficulty (Easy, Medium, Hard)
• Questions and answers are shuffled every time
• See your results and learn from detailed explanations

DAILY CHALLENGE
• A new quick challenge every day
• Complete it to earn +30 XP

STAY MOTIVATED
• Earn XP and level up as you learn
• Build a daily learning streak and track it week by week
• Unlock achievements such as First Lesson, First Quiz, Perfect Quiz and 7 Day Streak
• Follow your stats: topics completed, quiz accuracy, interview questions reviewed and bookmarks

WHO IT IS FOR
• Beginners starting out with React
• React developers moving to Next.js
• Developers preparing for front-end or React interviews
• Anyone who wants a quick daily refresher on modern React and Next.js

The app is free to use and supported by ads. You can optionally watch a short ad to earn bonus XP.

React and Next.js are trademarks of their respective owners. This app is an independent learning resource and is not affiliated with or endorsed by Meta or Vercel.

Recent changes:
Welcome to ReactMaster — learn React & Next.js offline!
• Structured lessons on modern React & Next.js
• Interview prep with common questions & answers
• Quizzes to test your knowledge
• Daily challenges to stay sharp
• Track progress, bookmarks & achievements
• Cleaner UI and polished app icon
Start learning anytime, anywhere — no internet needed.