Your data, respected.

01Introduction

This page explains how Hawk Chess collects, uses and protects information when you visit this site, join the waitlist or contact us. By using the site, you accept the terms described below.

02Data we collect

Hawk Chess collects as little as possible:

• Account: your email address, your username and your password (stored encrypted by our account provider, we never see it), and your plan (free or Pro).
• Your games: when you are logged in, the games you analyze and their review are saved to your account so you find them on every device.
• Waitlist: the email address you enter, and the date you signed up.
• Messages: what you send us yourself by email or Discord (username, email address, content of the message).
• Technical data: standard logs kept by our host (IP address, browser type, pages visited), for security and to keep the site running.

Payments: the Pro subscription is paid through Stripe. Your card details are entered on Stripe's own page and never reach Hawk Chess: we only keep your Stripe customer number, your plan and the date it renews.

03Your games

Engine analysis runs inside your own browser: the engine never sends your games anywhere. Reviewed games are saved in your browser's local storage so they appear on the "My games" page and, when you are logged in, in your account (Supabase) so you find them on every device. You can delete them from "My games" at any time.

The weakness report and the puzzles are computed in your browser from these saved games. Your puzzle progress stays in your browser.

When you import games with a Chess.com or Lichess username, your browser asks those sites directly for your public games. If you click "Ask the AI coach", the position, the move and the engine's evaluation (no personal data) are sent to our AI provider to write the explanation.

04How we use it

• Telling you when Hawk Chess opens, if you joined the waitlist.
• Answering your messages and partnership requests.
• Keeping the site secure and working properly.
• Improving the site in a general, anonymous way.

We never sell or rent your personal data.

05Legal basis (GDPR)

If you live in the European Economic Area, your data is processed on the basis of:

• your consent, when you join the waitlist or contact us yourself;
• our legitimate interest in answering your requests and securing the site;
• our legal obligations, where they apply.

06Cookies

Hawk Chess uses no advertising cookies and no marketing trackers. It only sets a few strictly necessary cookies:

• hc_csrf: protects the waitlist form against forged requests (24 hours);
• hc_last: prevents spam on the waitlist form (1 minute);
• hc_ai: counts your AI coach requests to keep it free for everyone (1 hour).
• Session: when you log in, your session is kept in your browser's local storage so you stay logged in. Logging out removes it.

Embedded content (such as the Discord widget or Google Fonts) may set its own technical cookies under its own policies. You can manage cookies in your browser settings.

07Third-party services

The site relies on a few external services:

• Payments: Stripe, for the Pro subscription (card details, invoices, tax). The legal details of the seller are in the legal notice and the terms of sale.
• Accounts and database: Supabase, which stores your account and your saved games. Each account can only read its own data.
• Advertising (free plan): Google AdSense may show a small ad on the analysis and history pages. Google can use cookies for this, only with your consent where the law requires it. Pro members see no ads.
• Hosting and visit statistics: Vercel, including Vercel Web Analytics, which counts page views anonymously without cookies.
• Fonts: Google Fonts.
• Chess engine: Stockfish 17 (Stockfish.js), free software under the GPLv3 licence, running in your browser.
• Game import: the public Chess.com and Lichess APIs, only when you use them.
• AI coach: Anthropic (Claude), only when you click "Ask the AI coach".
• Community: Discord, Instagram and TikTok, when you choose to follow us or write to us there.

Each of these services applies its own privacy policy.

08Retention

Your account and your games are kept while your account exists; ask us and we delete them. Billing records (invoices) are kept for 10 years, as French accounting law requires. Waitlist emails are kept until launch, or until you ask us to remove them. Messages are kept as long as needed to handle your request, then deleted or securely archived. The host's technical logs are kept for a limited time.

09Your rights

Depending on where you live, you have the right to:

• access your data and get a copy;
• correct inaccurate data;
• have your data deleted, in the cases provided by law;
• restrict or object to some processing;
• data portability;
• withdraw your consent at any time.

To use these rights, write to the address in the Contact section. In France, you can also file a complaint with the CNIL.

10Use of the site

All content on this site (texts, visuals, logo, name and design) belongs to Hawk Chess. Any reproduction or reuse without written permission is forbidden. Engine evaluations and coach explanations are given for learning purposes and may contain mistakes.

11Changes

This policy may change. The date of the last update is shown at the top of the page. By continuing to use the site after an update, you accept the new version.

12Contact

For any question about this policy or your personal data:

hawkchess.contact@protonmail.com