Privacy Policy

Last updated: March 2026

1. Controller

Name: Stefan Wintergerst
Email: wintergerst.stefan@googlemail.com
Website: estimation-corgi.com

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 (PostHog)

This website uses PostHog to understand how visitors use the site and to measure interactions with core features. This helps us improve functionality, content, and overall user experience. Analytics are only enabled after you give your consent.

Data collected: PostHog may collect page views, referrer URL, browser and device information, approximate location, timestamps, and event data generated when you interact with the website, such as requesting a new message or suggesting a message. If an error occurs while submitting a suggestion, technical error details and the form values involved in that failed submission may also be sent to PostHog for debugging purposes.

Storage and identifiers: PostHog may use cookies or similar browser storage to recognize returning browsers and associate events with a session. We do not use PostHog to directly identify you by name.

Retention period: Analytics data is retained only as long as necessary for analytics and debugging purposes or until it is deleted in PostHog.

Provider:PostHog. This website is configured to send analytics data to PostHog's EU ingestion endpoint at eu.i.posthog.com
Legal basis: Article 6(1)(a) GDPR (your consent). You can give or refuse consent through the cookie banner and change your choice later via cookie settings.
Data transfer:Although the data is sent to a PostHog EU endpoint, processing by PostHog may involve international data transfers depending on PostHog's infrastructure and support arrangements.
Your rights: You can object to analytics processing at any time by withdrawing your consent in cookie settings or by contacting us.
More information: PostHog Privacy Policy

4. Cookies

This website may use cookies and similar browser storage for essential functionality and for PostHog analytics described in Section 3. You can delete or block cookies through your browser settings at any time and manage analytics consent through cookie settings.

Legal basis: Essential cookies – Art. 6(1)(f) GDPR. Analytics-related storage is based on your consent under Art. 6(1)(a) GDPR as described in Section 3.

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: PostHog analytics data is generally stored in pseudonymous event form rather than as directly identifying profile data. If you want to exercise rights related to analytics data, please contact us and include any details that may help us locate the relevant records.

6. Updates

This policy may be updated to reflect legal or technical changes. Please review this page periodically for the latest version.

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