Privacy Policy

1. Information we collect

Account information from Google

antsan uses Sign in with Google. When you sign in, Google shares your Google account ID, email address, name and profile picture with us. We ask only for this basic profile — we never see your Google password and can’t access your Gmail, Drive, contacts, calendar or any other Google data. We also record when your account was created and when you last signed in.

Your practice activity

When you work through a problem, we store what you need to come back to it:

• your answers at each of the six stages — restate, technique, plan, code, dry run and review — and your conversation with the Guru;
• the code you write and run;
• your whiteboard sketches, when whiteboard sharing is on;
• your scores, the hints you ask for, whether you viewed the solution, and when you started, paused and finished; and
• the debrief and dry-run replay generated for the attempt.

Question sets you upload

If you upload a CSV to the question bank, we store its contents and process them — including with our AI provider and code sandbox — to verify and enrich the questions.

Technical information

Like most websites, we and our hosting providers automatically receive standard request data — such as your IP address, browser and device type, the pages you request, and timestamps — to deliver the site, keep it secure and diagnose errors.

2. Cookies and browser storage

We use a single cookie, antsan_session, to keep you signed in. It’s a first-party, HTTP-only cookie that lasts up to 30 days. We store only a hashed version of its value, and signing out deletes your session from our servers. We don’t use advertising or analytics cookies, and we don’t track you across other websites.

Your browser’s local storage keeps your whiteboard drawings and your whiteboard-sharing setting for each attempt, so they survive a page reload. That data stays on your device unless you share the board with the Guru, and clearing your browser’s site data removes it.

The Sign in with Google button is loaded from Google, which may use its own cookies under Google’s Privacy Policy.

3. How we use your information

• To sign you in and keep your account secure.
• To run your practice sessions — evaluating answers, giving hints, running code against tests, scoring each stage, and producing your debrief and replay.
• To show your history, so you can resume or review attempts.
• To operate, maintain and protect antsan, including preventing abuse and fixing bugs.
• To improve antsan — for example, spotting questions whose hints confuse people, or feedback that misses the mark.

We don’t sell your personal information, share it for advertising, or use it to build advertising profiles.

If you’re in the European Economic Area or the UK, we process your information to provide the Service you signed up for (performance of a contract) and for our legitimate interests in keeping antsan secure and improving it.

4. How the Guru uses AI

The Guru runs on a large language model from a third-party provider (currently Z.AI). As you work through a problem — submitting answers, asking for hints, replaying your dry run and finishing an attempt — we send the relevant content to the provider so it can generate the Guru’s responses, scores and debrief. That content can include the problem, your answers, your code, your shared whiteboard sketch and the recent conversation.

We don’t send your name, email address or profile picture to the AI provider. Please don’t put personal or confidential information — passwords, API keys or code you aren’t allowed to share — in your answers or code. The provider processes this content under its own terms and privacy policy.

5. Who we share information with

We share information only with service providers that help us run antsan, and only what they need:

• Google — provides Sign in with Google.
• Our AI model provider (currently Z.AI) — generates the Guru’s responses, as described above.
• Hosting and infrastructure providers — such as Vercel, which hosts our website, and the providers that run our servers and database.

We may also disclose information if the law requires it, or to protect the rights, safety or property of our users, the public or antsan. If antsan is involved in a merger, acquisition or sale of assets, your information may be transferred as part of that deal, and this policy will keep applying to it.

Our providers may process information in countries other than the one you live in, which may have different data-protection laws.

6. How long we keep it

• Account and practice history — for as long as your account exists, so your history is there when you come back. If you ask us to delete your account, we delete it and your practice history within 30 days.
• Sessions — expire after 30 days; signing out deletes yours immediately.
• Server logs — kept for a limited period, including under our hosting providers’ own retention policies.

We may keep information longer where the law requires it.

7. How we protect it

Traffic between your browser and antsan is encrypted with HTTPS, session tokens are stored only in hashed form, and your attempts are visible only to your own account. No method of transmission or storage is completely secure, so we can’t guarantee absolute security — but if a breach affects your personal information, we’ll notify you as the law requires.

8. Your choices and rights

• Access and export — ask us for a copy of your data.
• Correction — your name and picture come from Google and refresh each time you sign in; for anything else, contact us.
• Deletion — ask us to delete your account and practice history.
• Whiteboard sharing — switch it off during an attempt to keep your sketches in your browser.
• Disconnect Google — remove antsan from your Google Account’s third-party connections at any time. This doesn’t delete data we already hold — email us for that.

Depending on where you live — for example the EEA, the UK, California or India — you may have further rights, such as to object to or restrict processing, to data portability, or to complain to your local data-protection authority. We honor the requests above wherever you live. To make one, email vishantbatta99@gmail.com from the address linked to your account; we’ll respond within 30 days.

9. Children

antsan isn’t meant for children. You must be at least 13 — or older where your local law requires — to use it. If you believe a child has given us personal information, contact us and we’ll delete it.

10. Changes to this policy

We may update this policy as antsan evolves. We’ll change the “Last updated” date above and, for significant changes, give notice on the site before they take effect.

11. Contact us

Questions, requests or concerns about your privacy: vishantbatta99@gmail.com.