Legal

Privacy Policy

Last updated: 15 March 2026

This policy explains what data SpoolHound collects, why, and what rights you have under the General Data Protection Regulation (GDPR). SpoolHound is operated from the Netherlands and is subject to EU data protection law.

1. Who we are

SpoolHound is a free filament price comparison service. We are operated as an individual/sole trader based in the Netherlands. For data protection queries, contact us at hello@spoolhound.com.

2. What data we collect and why

2.1 Click tracking (affiliate analytics)

When you click a "Buy" link on SpoolHound, we record:

  • Which product was clicked
  • The date and time of the click
  • A one-way cryptographic hash of your IP address (we never store your raw IP address)

This data is used to measure which products are popular and to verify affiliate commission claims. The IP hash cannot be reversed to identify you - it is used only for deduplication. Legal basis: legitimate interests (Art. 6(1)(f) GDPR) - operating an affiliate business requires understanding click volume.

2.2 Email address (newsletter sign-up)

If you submit your email address via our sign-up form, we store it in order to send you a one-time notification when price drop alerts launch. We use Formspree to process form submissions - see their privacy policy for details. Legal basis: consent (Art. 6(1)(a) GDPR). You can withdraw consent at any time by emailing us.

2.3 Web server logs

Our web server (nginx on Hetzner) may record standard HTTP access logs including IP addresses, request paths, and user-agent strings. These logs are retained for up to 7 days for security and troubleshooting purposes and are then deleted. Legal basis: legitimate interests (Art. 6(1)(f) GDPR).

3. What we do NOT collect

  • We do not use cookies for tracking or advertising.
  • We do not use Google Analytics, Facebook Pixel, or any third-party analytics scripts.
  • We do not create user profiles or track you across sessions.
  • We do not sell or share your data with third parties for marketing.

SpoolHound participates in affiliate programs including but not limited to Amazon Associates and retailer-direct affiliate programs. When you click a "Buy" link and make a purchase, we may earn a commission at no extra cost to you. Affiliate links are processed through our server (you are redirected via spoolhound.com/go/…) to facilitate click tracking. The final retailer URL is never exposed to your browser before you are redirected.

5. Third-party services

6. Data retention

  • Click records (hashed IP + product + timestamp): retained indefinitely for analytics purposes.
  • Email addresses (sign-up list): retained until you request deletion or the feature launches and you unsubscribe.
  • Server access logs: deleted after 7 days.

7. Your rights under GDPR

If you are located in the EU/EEA, you have the following rights:

  • Right of access - you can request a copy of personal data we hold about you.
  • Right to erasure - you can request deletion of your data.
  • Right to rectification - you can ask us to correct inaccurate data.
  • Right to object - you can object to processing based on legitimate interests.
  • Right to withdraw consent - where processing is based on consent, you may withdraw it at any time.
  • Right to lodge a complaint - you can complain to the Dutch data protection authority (Autoriteit Persoonsgegevens) at autoriteitpersoonsgegevens.nl.

To exercise any of these rights, email us at hello@spoolhound.com. We will respond within 30 days.

8. Data security

All traffic to SpoolHound is encrypted via HTTPS (TLS). IP addresses are hashed using SHA-256 with a secret salt before storage and cannot be reversed. We do not store payment information of any kind.

9. Changes to this policy

We may update this policy from time to time. The "last updated" date at the top of this page will reflect any changes. Continued use of SpoolHound after a change constitutes acceptance of the updated policy.

10. Contact

For any privacy-related questions or requests: hello@spoolhound.com