Privacy Policy

Who we are

Codejump is operated by Atlas Code LLC, a limited liability company formed in Wyoming, United States. That company is the data controller for the personal data described on this page. Throughout this policy, “we” and “us” mean Atlas Code LLC.

Questions about this policy, or a request to exercise the rights below, go to support@codejump.io.

The short version

We collect what is needed to give you an account, run your code, remember your progress and take payment. We do not sell personal data, and we do not use your submissions to train our own models.

What we collect

• Account data — email address, name and profile picture, as provided by you or by the identity provider you sign in with.
• Practice data — the code you submit, the results of running it, quiz answers, progress, streaks and scores.
• Usage data — which exercises you open, run and finish, the device type (phone, tablet or computer) you use, how long the in-browser editor took to load, and the words you type in the search boxes of the site. When you sign up we also keep where you came from: the domain of the website that linked to us and the utm tags of the link, if it had any — never the full address of the page. We never keep the code you type here, only that you ran something.
• Billing data — subscription status and plan. Card details are entered on our payment provider's side and never reach our servers.
• Technical data — logs and error reports containing IP address, browser and the page or endpoint involved, kept so the service can be debugged and protected against abuse.

Why we collect it

To create and secure your account, to execute and grade your submissions, to show you your own history and progress, to process subscriptions, to send transactional email (sign-in, billing, account notices), to send occasional progress emails based on your activity (a path left mid-way, mistakes to review, an upcoming interview, a trial ending — at most one every few days, and you can turn them off in Settings or from the link in each email), to rate-limit abuse, and to diagnose failures. We also use usage data to understand how the practice features are used — which exercises are opened, run, searched for and completed, and how quickly the in-browser editor loads — so we can fix what does not work and write what is missing. Usage reports are internal and show totals; a search term is only looked at once several different members have made the same search, and e-mail addresses and long numbers are never stored.

Code execution and the AI mentor

Code you submit runs in an isolated sandbox with no network access. It is stored against your account so you can see your own history.

When you ask the AI mentor for a review, the relevant challenge and the code you wrote are sent to Anthropic's API to produce the answer. That request is made per feature use, not in the background, and Anthropic acts as a processor for it.

Who processes data on our behalf

• Clerk — authentication and account management.
• Neon — the PostgreSQL database holding accounts, submissions and progress.
• Lemon Squeezy — payments and subscriptions, acting as merchant of record.
• Anthropic — the model behind the AI mentor, for the requests described above.
• Upstash — Redis used for caching and rate limiting.
• Resend — delivery of transactional and progress emails.
• Sentry and Axiom — error monitoring and application logs.
• Vercel and Railway — hosting; Vercel also measures page visits anonymously.

Some of these operate outside the European Economic Area; where that is the case, transfers rely on the standard contractual clauses in their terms.

Cookies

We use the cookies our authentication provider needs to keep you signed in, and a small amount of browser storage for interface preferences such as your chosen list or grid view. Vercel Web Analytics measures page visits without cookies and without identifying you. We do not run advertising trackers.

How long we keep it

Account and practice data are kept while your account exists. Delete your account and they are deleted with it, except records we are required to keep for accounting, and backups, which age out on their own cycle. Usage counters are deleted after 180 days. Logs and error reports are short-lived.

Your rights

You can download a JSON copy of your CodeJump account and practice data in Settings. You can delete your account from account security, or request help from support. You can also ask for a copy of your data, its correction or deletion, and object to a particular use. Write to support@codejump.io and we will answer within 30 days. If you are in the EU or UK and are not satisfied with our answer, you can complain to your national data protection authority.

Changes

If this policy changes in a way that affects you, the date at the top changes and we say so by email before the change takes effect.