Coddy mobile app

Learn to code on your phone, free

Join 4M+ learners practicing Python, JavaScript, and 19+ other languages on iPhone, Android, and the web. Real code, short daily lessons.

4.9App Store 4.8Google Play

4M+Learners

19+Languages and topics

4.9★App Store rating

100%Free to start

Why people stick with Coddy on mobile

Not another reading app. You write real code in your pocket and your progress actually sticks.

Real code in your pocket
Every lesson is interactive. You type, run, and debug right inside the app, with instant feedback on every line.
19+ languages and topics
Python, JavaScript, Java, C++, SQL, HTML, CSS, Go, Rust, Swift, and more. Pick any and start free.
An AI tutor when you get stuck
Tap a hint and the in-app tutor explains your error in plain English, then suggests a fix you can apply right away.
Lessons that fit a coffee break
Most lessons take five minutes or less, so they fit between classes, between meetings, or on the bus ride home.
Streaks that actually keep you going
Daily streaks, XP, badges, and a global leaderboard turn practice into a habit you keep without thinking about it.
Earn a certificate while you commute
Finish a section on your phone and you get a verifiable certificate you can drop straight on LinkedIn or your CV.

From download to first program in 60 seconds

No setup, no signup wall. Three steps from install to your first working program.

01
Install on iOS or Android
Grab Coddy from the App Store or Google Play. Prefer the browser? Open coddy.tech and skip the install entirely.
02
Pick a language
Choose from Python, JavaScript, Java, and 16+ more. Start at zero, or take the placement quiz and jump ahead.
03
Code a little, every day
Build a streak with short daily lessons. Each one ends in a real coding challenge, and a new certificate to earn.

Every language we teach, in your pocket

From Python and JavaScript to Rust and Go, every Coddy track works on iPhone, Android, and the web.

Loved by 4M+ learners

Real reviews from the App Store.

★★★★★
“This app is personally really good in my opinion, it's like Duolingo, but coding!”
SweateraCCWApp Store
★★★★★
“A fun quick way to work on my knowledge of JS in short little recap lessons and practice problems while on the go away from my computer.”
Americanx720App Store
★★★★★
“The best part about using this app is that you actually make functional programs as you practice. This helps with using what you learn in real world scenarios.”
Beach16App Store
★★★★★
“I struggled to learn how to code before this, but now, I feel like I'm on top of the world thanks to this app!”
Blake JerinaApp Store

Frequently asked questions

Is the Coddy app really free?

Yes. Every lesson, challenge, and certificate is free on iOS, Android, and the web. Coddy PRO is an optional upgrade for power users (AI Plus and deeper analysis), but you can finish every course without paying a cent.

What can I learn with the Coddy app?

19+ tracks: Python, JavaScript, Java, C++, C#, Go, Rust, Swift, SQL, HTML, CSS, and more, plus interview prep, daily challenges, and a built-in AI tutor that explains your specific errors.

Do I need any coding experience to start?

No experience required. Coddy is built for complete beginners, so the first lessons assume you have never written a line of code. If you already know the basics, take the placement quiz and skip ahead.

Does Coddy work offline?

The iOS and Android apps cache your current lessons, so you can keep learning on the subway or a flight. You only need a connection to sync your progress, use the AI tutor, and unlock new chapters.

How is Coddy different from other coding apps?

Coddy is built around writing real code, not picking from multiple-choice answers. Lessons run in a real in-app code editor, the AI tutor explains your specific errors, and every section ends with a free verifiable certificate.

Will Coddy help me get a job?

Coddy gets you to the level where you can write, debug, and ship real code, which is what employers actually test for. Plenty of learners have used Coddy certificates and projects to land their first dev role, internship, or freelance gig.

Which devices does the Coddy app support?

iPhone and iPad on iOS 16 or later, Android phones and tablets on Android 8 or later, and any modern desktop browser. Your progress syncs across all of them automatically.