Cookie Policy

Cookies are small text files that are placed on your device when you visit a website. They are widely used to make websites work more efficiently and to provide information to the site owners. ChessHelper.ai uses cookies and similar technologies to ensure our Service functions correctly, improve your experience, and understand how our Service is used.

Essential Cookies

These cookies are strictly necessary for the Service to function. They enable core features like authentication, session management, and security. Without these cookies, the Service cannot operate properly.

• Session cookie: Maintains your login state as you navigate between pages
• CSRF token: Protects against cross-site request forgery attacks
• Authentication token: Identifies you as a logged-in user (JWT-based)

Functional Cookies

These cookies enable enhanced functionality and personalization, such as remembering your preferences and settings.

• Theme preference: Remembers your display preference
• Language settings: Stores your language preference

Analytics Cookies

We use Google Analytics 4 (GA4) to understand how visitors interact with our Service. These cookies collect information anonymously and help us improve the user experience.

• Pages visited and time spent on each page
• Features used and interactions completed
• Traffic sources and referral information
• Device type, browser, and general location (country/city level)
• Error occurrences and performance metrics

Marketing & Advertising Cookies

We use Google Ads and related Google advertising services to deliver relevant advertisements and measure the effectiveness of our ad campaigns. These cookies may be used to:

• Track conversions from Google Ads campaigns
• Build audience segments for remarketing purposes
• Deliver personalized advertisements based on your browsing activity
• Measure ad performance and attribution

Some cookies are placed by third-party services that appear on our pages. We use the following third-party services:

• Google Analytics (GA4): Website analytics cookies used to measure traffic and understand user behavior
• Google Ads: Advertising cookies used for conversion tracking, remarketing, and ad personalization
• Stripe: Payment processing cookies used during checkout to securely process your subscription payment
• Google OAuth: Authentication cookies used when you sign in with your Google account

These third-party services have their own cookie policies. We encourage you to review their privacy policies for more information.

Cookies on our Service fall into two categories based on duration:

• Session cookies: Temporary cookies that are deleted when you close your browser
• Persistent cookies: Remain on your device for a set period or until you delete them. Our persistent cookies typically expire within 30 days

When you first visit our website, a cookie consent banner will appear at the bottom of the page. You can choose to accept all cookies, reject non-essential cookies, or customize your preferences by category (Essential, Analytics, Marketing & Ads).

You can change your cookie preferences at any time by clicking the "Cookie Settings" link in the website footer.

You can also control cookies through your browser settings. The following locations may help you manage cookies in common browsers:

• Chrome: Settings > Privacy and Security > Cookies
• Firefox: Settings > Privacy & Security > Cookies
• Safari: Preferences > Privacy > Cookies
• Edge: Settings > Cookies and Site Permissions

Please note that disabling essential cookies may prevent you from using certain features of our Service, including logging in and managing your subscription.

Our Chrome extension uses local storage (not cookies) to store your authentication token and extension preferences. This data stays on your device and is only used to communicate with our API for chess analysis. You can clear this data at any time through your browser's extension management settings.

We may update this Cookie Policy from time to time to reflect changes in technology, legislation, or our data practices. When we make changes, we will update the "Last updated" date at the top of this page. We encourage you to review this policy periodically.

If you have questions about our use of cookies or this Cookie Policy, please contact us:

• Email: support@chesshelper.ai
• Website: chesshelper.ai