Coding Hub - Learn Programming

Learn to code from your phone with Coding Hub, the coding app for beginners and interview-ready developers. Learn programming in C, C++, Java, Python, JavaScript or Go, master Data Structures and Algorithms, and practice in a built-in code compiler with a personal AI tutor beside you.

📚 STRUCTURED LESSONS
Learn C programming, C++, Java, Python, JavaScript and Go step by step with clear theory, guided practice and quick summaries, syntax-highlighted runnable code and plain-English explanations. Browse by subject and topic with difficulty tags, search and bookmarks; a quick check quiz confirms each lesson.

🧠 DATA STRUCTURES & ALGORITHMS
Build problem-solving skills for coding interviews: arrays, linked lists, stacks, queues, trees, graphs, matrices, strings, hashing, sorting, recursion and dynamic programming, with Big-O time complexity — the patterns top tech companies test.

💻 CODE EDITOR & ONLINE COMPILER
Write and run code instantly — no IDE, no setup. The online compiler runs Python, Java, JavaScript, TypeScript, C, C++, Go, Rust, Dart, Kotlin and Swift. Solve coding problems against hidden test cases with reference solutions.

🤖 SMART MENTOR — AI CODING TUTOR
Ask anything and get lesson-aware answers, switch to mock interview mode, or snap a photo of code and ask about it. The AI builds a personalized 7-day study plan mixing concept review, coding practice and interview prep.

🎯 CRACK YOUR CODING INTERVIEW
Practice curated interview questions with hints, model answers and example code — from Java and Python to system design interviews, SQL, React, Node.js and behavioral interviews, plus prep for Amazon, Google and Microsoft.

✅ QUIZZES & MOCK TESTS ON 100+ SUBJECTS
Programming quizzes scale from easy to hard with an explanation for every answer. Timed mock tests mix MCQ, theory and coding questions with analytics and improvement tips, plus custom topic tests. Quiz yourself on web development with HTML, CSS, React, Next.js, Vue, Node.js and TypeScript; mobile development with Flutter, Dart, Kotlin, Swift and React Native; databases like SQL, PostgreSQL, MongoDB and Redis; cloud and DevOps with AWS, Azure, GCP, Docker, Kubernetes, Linux, Git and CI/CD; machine learning, deep learning, data science, NLP and prompt engineering with ChatGPT; plus operating systems, computer networks, system design and cybersecurity.

🔁 SPACED REPETITION & PROGRESS
Wrong answers return as spaced-repetition review until you know them. Track quiz scores, study minutes, completed topics and weak areas. Keep streaks with daily goals, a check-in quiz and an AI revision card, earn XP and badges, and climb leaderboards.

🌐 BUILT FOR EVERYONE
Works offline with light and dark themes and an interface in English, Hindi, Kannada, Tamil and Telugu, plus a tech news feed and study reminders.

📌 WHO IS THIS FOR?
Complete beginners writing a first C or Python program, computer science students drilling data structures and algorithms before a coding interview, and career switchers and self-taught developers building job-ready skills toward interview readiness.

Language names and logos are trademarks of their respective owners. This app is independent and is not affiliated with, endorsed by or sponsored by them.

Recent changes:
🎧 Listen to lessons — now with play/pause and adjustable speed; picks up right where you left off.

🃏 Flashcards + spaced repetition — revise any topic in a tap, sized for quick, focused sessions.

🚩 Report a diagram — spot something off in a figure? Flag it and we'll fix it fast.

🔔 Faster support — tap a reply notification to jump straight into your ticket.