Privacy Policy for the Coffee Rings website

This policy describes data processing on the static website coffeerings.de. The Coffee Rings app has a separate app privacy policy.

1. Controller

Michael K. Knop
Kerbelweg 5b
22337 Hamburg
Germany
Email: support@coffeerings.de

2. Hosting

This website is hosted by goneo:

goneo Internet GmbH
Dresdener Straße 18
32423 Minden
Germany

3. Server log files and technical access data

When the website is requested, the web server processes technically required access data such as IP address, date and time, requested file, transferred data volume, referrer, browser and operating system. This data is used to deliver the website, identify technical errors, prevent misuse and ensure secure operation.

The legal basis is Art. 6(1)(f) GDPR. The legitimate interest is the secure and reliable provision of this website. The retention period depends on the technical and security-related requirements of the hosting operation.

4. Contact by email

If you contact us by email, the information you provide is processed. This includes in particular your email address, the message content and voluntarily submitted attachments or diagnostic information.

If your request relates to entering into or performing a contract, processing is based on Art. 6(1)(b) GDPR. Other requests are processed on the basis of Art. 6(1)(f) GDPR; the legitimate interest is handling your request properly. The data is deleted once the request has been finally handled and no statutory retention obligations prevent deletion.

5. External links, App Store and Google Play

This website contains normal external links, including links to the Apple App Store, Google Play and mkknop.de. Store badges are loaded locally from coffeerings.de. Merely loading this website does not embed content from Apple, Google, mkknop.de or social media providers.

You leave coffeerings.de only when you click an external link. The privacy policies and settings of the respective destination provider then apply.

6. No own cookies or tracking

coffeerings.de uses no own cookies, no own analytics, no tracking pixels, no embedded affiliate tracking scripts and no external social media plugins. Images, store badges, CSS and JavaScript are loaded locally from coffeerings.de where they are embedded on this website.

7. Purpose of processing

Processing serves the technical provision of the website, system security, error analysis and handling email requests. There is no use for own advertising, profiling or website tracking.

8. Data subject rights

Subject to the statutory requirements, you have rights of access, rectification, erasure, restriction of processing, data portability and objection to certain processing. Privacy requests can be sent to the email address above.

9. Right to lodge a complaint

You have the right to lodge a complaint with a data protection supervisory authority if you believe that the processing of personal data violates data protection law. For Hamburg, the Hamburg Commissioner for Data Protection and Freedom of Information is the relevant authority.

10. Last updated

Last updated: July 2026