TeachYourselfDev

nth-language

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About this app

TeachYourselfDev is a free, interactive way to learn programming — no signup, no paywall, no videos. Just you and the keyboard.

• Interactive courses across many languages (Python, JavaScript, Java, Go, Rust and more) with hands-on exercises.
• A real code playground — write and run code in 11 languages in secure sandboxes, right from your phone.
• Ask the built-in AI when you're stuck.
• Algorithm visualizers — watch sorting, searching and tree traversals run step by step.
• Interview prep, CS-concept explainers, and quizzes to test what you've learned.
• Track your streak, level and progress — stored anonymously, no account required.

Everything is free and always will be. Start learning by actually writing code.

What’s new

Learn to code for free — no signup. This first release includes interactive courses across many languages, a real code playground that runs your code in secure sandboxes, an AI helper for when you're stuck, step-by-step algorithm visualizers, CS-concept explainers and quizzes. Your progress is saved anonymously on your device.