Privacy Policy

Last updated: 17 October 2026

BlunderLens is a Berawa Digital project. Berawa Digital is a trading name of Berawa Experience S.L. (Spain), which operates the service and collects payments through Stripe as the merchant shown at checkout. Contact: berawadigital@gmail.com.

What we process

• Chess.com username. When you request a report we fetch your public games from the Chess.com public API through our server. We do not store your username or games; the analysis runs in your browser.
• Email (optional). If you join our list, we store your email with our email provider (Resend) to send you updates. You can unsubscribe anytime.
• Payments. If you buy the Daily Training Plan, Stripe processes your payment and shares your email and Chess.com username with us so we can deliver your plan. We never see your card details.
• Hosting logs. Our host (Vercel) may keep standard technical logs (IP address, browser) for security.

Legal basis

Consent (newsletter), performance of a contract (paid plan) and legitimate interest (security logs), under the GDPR.

Your rights

You can request access, correction or deletion of your data, or object to processing, by emailing us. You can also complain to the Spanish data protection authority (AEPD).

Analytics

We use Vercel Web Analytics to count page visits and anonymous steps of the report flow (for example "report started" or "plan button clicked"). It does not use cookies, does not store your username (we strip it from the address before sending) and only produces aggregated statistics.

Cookies

We do not use advertising or tracking cookies. Stripe may set cookies on its own checkout and subscription portal pages.