Privacy Policy

buynder (“we,” “us”) is a personal TCG deck builder and binder tool for the One Piece and Pokemon Trading Card Games. This page describes what data we collect, how it’s used, and the third parties involved.

What we collect

• Sign-in data. When you sign in with Google, we receive your name, email address, and profile picture from Google. We store these in our Supabase database to identify your account.
• Decks and binders. If you sign in, the decks you build and the cards in your binder are saved to your account so they sync across devices. If you don’t sign in, that data only lives in your browser’s localStorage.
• Username. You can optionally claim a public username. Anyone with the URL buynder.com/u/<username>/<game> can view binders you mark as public.
• Cookies. We set session cookies (via Supabase Auth) so you stay signed in between visits. These are first-party cookies served from buynder.com and our Supabase auth endpoint. We do not use third-party advertising or tracking cookies.

Third-party services

• Supabase hosts our database and authentication. Your account, decks, and binders live there. See Supabase’s privacy policy.
• Google OAuth handles sign-in. Google sees that you authorized buynder; we never see your Google password.
• Netlify hosts the site itself and may log standard request metadata (IP, user agent) for security and performance. See Netlify’s privacy policy.
• TCGplayer (via Impact). Outbound links to TCGplayer go through our affiliate vanity URL, which sets an attribution cookie on .tcgplayer.com. We earn a commission on qualifying purchases. See our affiliate disclosure.

What we don’t do

• We don’t sell your data.
• We don’t serve ads. We don’t use third-party tracking or advertising cookies.
• We don’t share your data with any party not listed in “Third-party services” above.

Deleting your data

To delete your account, decks, and binders, email petros@buynder.com from the email tied to your Google account. We will permanently remove your records from our Supabase project within seven days.

Contact

Privacy questions? Email petros@buynder.com.