CODEGIRL

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Everyone
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About this app

CODEGIRL turns your ideas into real solutions. It is a coding school in your pocket, made by Studio 13 Developers for girls and beginners who want to build things that matter.

Start with a problem from your own life, such as "calculate my class average and say who passed", "convert temperatures" or "work out an electricity bill", and CODEGIRL guides you from the idea to a working program:

• Understand the problem: inputs, processing, outputs, constraints and what "correct" means.
• Plan the algorithm step by step, with pseudocode and a flowchart.
• Learn the code line by line: what each line does, why it is needed, the syntax, example values and common mistakes, with quick questions to check your understanding.
• Watch a demonstration: the program runs step by step and shows every variable.
• Practise on your own in a phone-friendly code editor with a symbol keyboard, custom input, a console and visible tests, plus hints when you are stuck.
• Get assessed fairly: your code runs against visible and hidden tests in a secure sandbox. Different correct solutions get the same score.
• Compare your solution with the reference solution, unlocked only after you submit, with friendly notes on differences and code quality.
• Use the working app you built, then collect achievements and move to the next lesson.

Try it first: tap "Try the Demo" to explore with ready-made lessons, results and achievements. No account needed.

Learning paths: Python Programming · HTML, CSS and JavaScript · Web Development · Mobile Application Development · Data Analysis and Problem-Solving · Creative Coding Projects.

Learn offline: download lessons, study the algorithm, code explanations and demonstration, and save your code without a connection. Your work syncs to your account when you are back online, so you can continue on the web at studio13developers.com/codegirl.

Your language: CODEGIRL is in English today, with Rutooro and Rukonjo being prepared with community reviewers. Voice input and read-aloud are available in English.

Teachers can create classes, follow learners' progress and give feedback on the web.

No ads. No tracking. Email is optional for learners.
Describe a problem, learn the algorithm, write the code and build a working app.
Updated on
Oct 19, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info and App activity
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

First release of CODEGIRL: algorithm-first coding lessons in Python and JavaScript, automatic assessment, offline lessons and drafts, voice input and read-aloud in English, and a demo with ready-made lessons and results.