Privacy Policy

1. Introduction

CoreSquares ("we," "us," or "our") respects your privacy. This Privacy Policy explains how we collect, use, store, and protect information when you use our website and services (the "Service"), including data we obtain from Chess.com, Lichess, USCF, FIDE, and other sources you connect.

2. Information We Collect

• Account information: Email, password (hashed), name, and profile details you provide when registering or updating your account.
• Connected platform data: When you link Chess.com, Lichess, or other accounts, we receive usernames, game history, ratings, and related data made available by those platforms via their APIs or your authorization (e.g., OAuth). We use this to build your unified profile and analytics.
• Usage data: Logs of visits, features used, and technical data (e.g., IP address, browser type) to operate and improve the Service.
• Cookies and similar technologies: We use cookies and similar technologies for session management, preferences, and analytics, as described below.

3. How We Use Your Information

We use the information we collect to:

• Provide, maintain, and improve the Service
• Build and display your unified chess profile and analytics
• Authenticate you and manage your account
• Send service-related communications (e.g., password reset, security)
• Respond to support requests and enforce our Terms of Service
• Analyze usage patterns and fix errors
• Comply with applicable law

4. Data Sharing and Disclosure

We do not sell your personal information. We may share data with: (a) service providers that help us operate the Service (e.g., hosting, email, analytics), under strict confidentiality; (b) law enforcement or regulators when required by law; (c) third parties in connection with a merger, sale, or restructuring, with notice as required by law. We may share aggregated or de-identified data that cannot reasonably identify you.

5. Cookies and Tracking

We use session and persistent cookies for authentication, preferences, and security. We may use analytics tools (e.g., first-party or privacy-respecting third-party) to understand how the Service is used. You can control cookies through your browser settings; disabling certain cookies may limit functionality (e.g., staying logged in).

6. Data Retention and Security

We retain your data for as long as your account is active or as needed to provide the Service, comply with law, or resolve disputes. You may request deletion of your account and associated data; we will process such requests in accordance with applicable law. We implement reasonable technical and organizational measures to protect your data; no system is completely secure, and we cannot guarantee absolute security.

7. Your Rights

Depending on where you live, you may have rights to access, correct, delete, or port your personal data, or to object to or restrict certain processing. You may exercise these rights where supported through your account settings or as provided by the Service. If you are in the European Economic Area or UK, you may also have the right to lodge a complaint with a supervisory authority.

8. Children

The Service is not directed at children under 13 (or higher age where required). We do not knowingly collect personal information from children. If you believe we have collected such information, you may request deletion through your account settings or discontinue use of the Service.

9. Changes

We may update this Privacy Policy from time to time. We will post the updated version on this page and update the "Last updated" date. Continued use of the Service after changes constitutes acceptance of the updated policy. Our Terms of Service also apply to your use of the Service.