Cardgap (cardgap.jp, "we", "our", "the Site") respects visitor privacy. This policy describes what data we collect and how we use it.
1. Information We Collect
- Access logs: IP address, browser type, referrer URL, pages visited, time on site
- Cookies: identifiers and preference data set by Google Analytics and Google AdSense
- Account info: email address (via NextAuth / Google sign-in), X (Twitter) account info if linked
- Payment info: processed by Stripe — credit card numbers are never stored on our servers
2. Cookies
We use cookies to improve your experience. Cookies do not personally identify you and can be disabled in your browser (some features may stop working).
3. Google AdSense
We use Google AdSense, a third-party ad service. Ad providers may use cookies to show ads based on your interests. To opt out or learn more, see Google's ad policies.
4. Google Analytics
We use Google Analytics for traffic analysis. This service uses cookies to collect anonymized traffic data. You can opt out via the GA opt-out browser add-on.
5. Third-Party Services
- Google AdSense (advertising)
- Google Analytics (traffic analysis)
- Vercel (hosting)
- Stripe (payment processing — paid plans only)
- NextAuth / Google OAuth (authentication)
- Microsoft Clarity (optional heatmap analytics)
6. Data Retention
Access logs are retained for up to 2 years before automated deletion. Account data is deleted promptly upon user request.
7. Your Rights (GDPR / CCPA / etc.)
- Right to access, correct, or delete your data
- Right to opt out of data sharing
- Right to restrict processing
8. Data Sources
Pricing data published on the Site is aggregated from public sources including TCGPlayer, Mercari, Yahoo Auctions, Card Rush, PSA, and optcgapi.com. Rights to the underlying data belong to those operators.
9. Disclaimer
Cardgap does not provide investment advice and assumes no liability for losses incurred from acting on published information. Trade at your own risk.
10. Contact & Updates
Questions about this policy: DM X @arWMibvH0Lnj5jG or open an issue at github.com/Yoooooui/cardgap.
This policy may be updated without prior notice. Material changes will be announced on the home page.