The Code Book is a free interactive coding curriculum built and maintained by an independent developer based in the United Kingdom. We are committed to handling your data with the same care and respect we would want for our own.

When you create an account we collect your email address and the display name you choose. We also store your learning progress — completed sections, XP, streak, and focus time. We do not collect your real name, phone number, location, or any payment information.

Your email is used solely to create and secure your account and to send password reset emails if you request one. Your progress data is stored so your learning journey is saved across devices. We do not use your data for advertising or marketing of any kind.

Your display name, XP score and streak count appear on the public leaderboard. Your email address is never visible to other users or shown publicly anywhere on the platform.

We do not sell, share or rent your personal data to any third party. Your data is stored securely using Supabase, a trusted infrastructure provider compliant with SOC 2 Type II. You can read Supabase's privacy policy at supabase.com/privacy.

You have the right to access your data, correct it, or request that it be deleted entirely. You can also object to how we process your data or request that we restrict processing. To exercise any of these rights contact us directly through the app and we will respond within 30 days.

If you would like your account and all associated data permanently removed, contact us and we will delete everything within 7 days and confirm when it is done.

The Code Book is a free interactive coding curriculum built and maintained by an independent developer based in the United Kingdom. It covers seven floors of learning — from absolute beginner to professional-grade programming — and includes lessons, games, XP tracking, a leaderboard, spaced repetition revision, and a focus timer. By using The Code Book you agree to these terms. If you do not agree, please do not use the service.

You can create a free account using your email and password or by signing in with Google. You are responsible for keeping your account credentials secure and for all activity that occurs under your account. You may not create multiple accounts to manipulate leaderboard rankings or gain an unfair advantage. We reserve the right to suspend or remove any account that breaches these terms.

You may explore Floors 1 and 2 as a guest without creating an account. Guest progress — including XP earned and sections completed — is stored in your browser's local storage only. It is not backed up to our servers and will be permanently lost if you clear your browser data or switch devices. Creating a free account is the only way to save your progress permanently.

You agree to use The Code Book for personal learning purposes only. You must not attempt to copy, scrape, or reproduce any curriculum content, games, or design for redistribution. You must not attempt to reverse-engineer the platform, gain unauthorised access to other users' data, or use the platform for any unlawful purpose. Automated access or bots are not permitted.

Your display name, XP score and streak count are visible to all users on the public leaderboard. Your email address is never shown publicly. XP and streaks are tied to your account and reset to zero if your account is deleted. We reserve the right to adjust or reset scores in cases of abuse or manipulation.

The Code Book includes games — Launch Sequence, Venus Mode, and Glitch Mode — alongside structured learning sections across seven floors. All curriculum content, game mechanics, visuals, and audio are original work owned by The Code Book. Nothing on the platform may be reproduced or redistributed without explicit written permission.

The Code Book is provided free of charge on an "as-is" and "as-available" basis. We make no guarantees about uptime, accuracy of content, or fitness for any particular purpose. Learning outcomes depend entirely on your own effort and engagement with the material.

To the fullest extent permitted by law, The Code Book and its developer shall not be liable for any loss of data, learning progress, or any direct, indirect, or consequential damages arising from your use of the platform. This includes but is not limited to loss of guest progress due to browser data being cleared.

You must be at least 13 years old to create an account. If you are under 16 and based in the UK or European Union, you must have verifiable parental or guardian consent before creating an account. Guest access is available to users of all ages.

How we collect, store, and protect your personal data is described in our Privacy Policy, accessible from the sign-in screen. By creating an account you also agree to our Privacy Policy.

We may update these terms at any time. When we do, the "last updated" date at the top of this document will change. Continued use of The Code Book after any changes constitutes your acceptance of the updated terms. We recommend checking this page periodically.