Code Quest Pro

Learn C, C++ and Python with runnable lessons, quizzes and boss battles. Works fully offline on your phone. No account, no ads, no tracking.

Code Quest turns your phone or tablet into a real coding classroom. Write actual C, C++ and Python (not pseudocode) and run it right on your device, with a full offline compiler and interpreter built in.

WHY CODE QUEST • Real code, real output: C/C++ compiles with clang and Python runs on Pyodide. No simulated runs. • Fully offline: every lesson and both language engines are built into the app. No internet needed to learn. • No account: no sign-up, no login, and nothing is uploaded anywhere. Your progress stays on your device. • Bite-sized lessons: each lesson explains one idea, then lets you write and run code right away. • Boss battles: every module ends with a quiz built from its own lessons, shuffled, to check you really understand it. • XP, levels and streaks: earn XP for lessons and quizzes, keep a daily streak and level up as you go. • Search every lesson: type a topic like "pointers" or "for loop" and jump straight to it.

WHAT YOU'LL LEARN • C: from your first program to pointers, structs and file handling • C++: classes, inheritance, templates and modern C++17 features • Python: syntax, data structures and real scripts you can run instantly • CS Foundations: core data structures and algorithms, with runnable Python examples

BUILT FOR LEARNING ON THE GO The code editor has syntax highlighting, a real terminal, and graphics and colour output for C/C++, so you can see exactly what your program does. Device care settings limit run time and memory, so a runaway program never freezes your phone.

OPTIONAL ONLINE EXTRAS Everything above works in airplane mode. If you turn on Settings > Online extras, Python's numpy, pandas, matplotlib and requests packages are downloaded the first time a program uses them (several MB each, only once). It's off by default.

PRIVACY No accounts, no analytics, no ads, no tracking. The privacy policy, support contact and open-source licenses are in Settings > About.

Whether you're new to programming or brushing up before a class or interview, Code Quest lets you learn by writing and running real code, anywhere, with nothing to sign up for.