Privacy Policy
Last updated: January 2026
1. Controller
Name: Stefan Wintergerst
Email: wintergerst.stefan@googlemail.com
Website: estimation-corgi.com, estimation-corgi.swinte.dev
2. Hosting (Vercel)
This website is hosted by Vercel Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, USA. Vercel processes server log data (IP address, browser type, and time of access) to ensure secure and reliable operation.
Legal basis: Article 6(1)(f) GDPR (legitimate interest in reliable and secure website delivery).
Data transfer: Data may be transferred to the USA. Vercel participates in the EU–US Data Privacy Framework.
3. Analytics (Vercel Analytics)
This website uses Vercel Analytics to collect anonymous usage data such as page views, referrer information, and basic browser information. This helps us understand how visitors use the site and improve user experience.
Data collected: Page views, referrer URL, browser type, device type, country (derived from IP address, which is not stored), and visit timestamp.
Privacy features: Vercel Analytics is privacy-friendly and does not use cookies, does not track users across sites, and does not collect personally identifiable information. All data is anonymized and aggregated.
Retention period: Analytics data is retained for a maximum of 12 months.
Provider: Vercel Inc., 340 S Lemon Ave #4133, Walnut, CA 91789, USA
Legal basis: Article 6(1)(f) GDPR (legitimate interest in analyzing and improving website usage). Our legitimate interest is to understand how visitors use our website to improve functionality and user experience. This processing does not override your fundamental rights as the data is fully anonymized.
Data transfer: Data may be transferred to and processed in the USA. Vercel participates in the EU–US Data Privacy Framework and provides appropriate safeguards for international data transfers under Article 46 GDPR.
Your rights: You can object to analytics processing at any time by contacting us. Since the data is fully anonymized, individual data cannot be identified or deleted.
More information: Vercel Analytics Privacy Policy
4. Cookies
Cookies may be used for essential functionality. You can delete or block cookies through your browser settings at any time.
Legal basis: Essential cookies – Art. 6(1)(f) GDPR.
5. Your Rights Under GDPR
Under the GDPR, you have the following rights:
- Right of access (Art. 15 GDPR): Request information about your personal data we process.
- Right to rectification (Art. 16 GDPR): Request correction of inaccurate personal data.
- Right to erasure (Art. 17 GDPR): Request deletion of your personal data under certain conditions.
- Right to restriction (Art. 18 GDPR): Request restriction of processing under certain conditions.
- Right to data portability (Art. 20 GDPR): Receive your personal data in a structured, machine-readable format.
- Right to object (Art. 21 GDPR): Object to processing based on legitimate interests at any time.
- Right to withdraw consent (Art. 7(3) GDPR): Where processing is based on consent, you may withdraw it at any time.
- Right to lodge a complaint (Art. 77 GDPR): File a complaint with your local data protection authority, such as the Landesbeauftragte für Datenschutz und Informationsfreiheit.
To exercise your rights, please contact us at wintergerst.stefan@googlemail.com.
Note: For Vercel Analytics data, since all information is fully anonymized and aggregated, it cannot be linked to individual users. Therefore, rights such as access, deletion, and portability do not apply to this anonymized data.
6. Updates
This policy may be updated to reflect legal or technical changes. Please review this page periodically for the latest version.