Privacy policy

Last updated 2 November 2026

Who we are

Cintax (cintax.in) is a coding practice platform for students, in Python, C and C++. In this policy, "we" means Cintax and "you" means anyone who uses the website or the practice app. If you have any question about your data, write to hello@cintax.in.

What we collect

• Account details: your name, your email address and your password. We never store the password itself, only a scrambled version (a "hash") that can't be turned back into the password.
• Practice records: the code you run, whether it passed the tests, how long you took, how many hints you used, and when. This is what lets Cintax choose your next problem and show your progress.
• Guest use: when you open the practice app without signing up, we create a guest account with no name or email, so you can look around. To check answers you sign up, and anything linked to the guest account moves to your new account. The try-it box on cintax.in doesn't need an account at all; the code you check there isn't saved.
• College details: if your college uses Cintax, your teacher may upload a class list with students' names and roll numbers. When you join a class with your teacher's link, you enter your roll number so we can match you to that list.
• Technical data: like any website, our servers briefly keep basic request logs (such as your IP address and browser type) to keep the service secure and fix problems.

We don't ask for your phone number, address, date of birth or any payment details for student use.

If you request a pilot through the form on cintax.in, we keep the details you send (name, college, role, phone number, email and class size) and use them only to contact you about the pilot.

Why we use it

• To let you log in and keep your progress.
• To check your code and give you the next problem that suits your level.
• To show your progress to you, and to your faculty if you joined through your college.
• To keep Cintax secure, for example to stop password guessing and misuse.
• To improve the problems and the platform, using overall patterns (for example, which problems many students find hard).

We don't sell your data, we don't use it for advertising, and we don't show ads.

When you press "Ask AI" in the practice app, the problem, your code and your test results are sent to the AI service we use to write the reply. Your name and email are not sent.

Who can see it

• You can see your own progress.
• Your college: if you join a class, the faculty who teach it can see your practice progress: problems solved, skills finished, when you practised, time spent and hints used. Your department's coordinator (for example the HoD) and your college's admins (for example the placement office) can see the same, and may use it to compare classes and prepare placement shortlists. They can't see your password. We tell you this on the join page before you join. If you want to leave a class, ask your teacher or write to hello@cintax.in.
• Service providers that help us run Cintax: our hosting provider (Hostinger), which stores the data on our servers, and, if you use the AI tutor, the AI provider that answers your question (we send it the problem and the code you ask about, not your name or email).
• The law: we'll share data if Indian law requires it.

Cookies and browser storage

The practice app keeps a login token in your browser's storage so you stay logged in. We don't use advertising or tracking cookies.

How long we keep it

We keep your account and practice records while your account is active. If you ask us to delete your account, we delete your personal data within 30 days, except where the law requires us to keep something. Guest accounts that haven't been used for 12 months may be deleted.

How we protect it

Data travels over an encrypted connection (HTTPS). Passwords are stored only as hashes. Access to the servers is limited and protected by keys. We take nightly backups so data isn't lost. No system is perfectly secure, but we take reasonable care and will tell affected users if a breach puts their data at risk.

Your rights

Under India's Digital Personal Data Protection Act, 2023, you can ask us to:

• tell you what personal data we hold about you,
• correct or update it,
• delete it,
• answer a complaint about how we've handled it.

Write to hello@cintax.in from the email address on your account. We'll reply within 30 days. If you're not satisfied with our answer, you can complain to the Data Protection Board of India.

Students under 18

Cintax is meant for college students. If you're under 18, use Cintax only with the permission of a parent or guardian, or through your college with their consent.

Changes to this policy

If we change this policy, we'll update the date at the top. If a change is important, we'll also tell you in the app or by email.