Privacy Policy

Last updated: April 8, 2026

1. Data Controller

The party responsible for data processing on this website is:

Martin Viertel
c/o COCENTER GmbH
Koppoldstr. 1
86551 Aichach
Germany

Email: hello@onlytwenty.one

2. General Information

The following information provides a simple overview of what happens to your personal data when you visit this website. Personal data is any data that can be used to personally identify you.

3. Data Collection on This Website

Server Log Files

The website provider automatically collects and stores information in server log files that your browser automatically transmits to us:

  • Browser type and version
  • Operating system used
  • Referrer URL
  • Hostname of the accessing computer
  • Time of server request
  • IP address (anonymized)

This data is not merged with other data sources. The storage is done for security reasons for a maximum of 30 days and is then deleted.

Local Storage

This website uses LocalStorage to save your preferences:

  • Theme setting: Your choice between light, dark, or automatic design
  • Currency: Your preferred currency (USD or EUR)
  • Language: Your preferred language (German or English)

This data is stored exclusively locally in your browser and is never transmitted to our servers. You can remove this data at any time by deleting your browser data.

4. Web Analytics with Anonyze

This website uses Anonyze (anonyze.io), a privacy-friendly web analytics service. Anonyze does not collect personal data and does not use cookies, localStorage, or browser fingerprinting.

The following data is collected for usage analysis:

  • Page views and time on page
  • Referrer source
  • Browser and operating system (from User-Agent header)
  • Approximate location at city level (via IP-based GeoIP lookup, the IP address is not stored)
  • Language (from Accept-Language header)

Returning visitors are identified using a one-way hash (SHA-256) of the IP address, User-Agent, and a daily salt. The IP address is used solely for hash computation and is never stored.

Data is processed on servers in Germany. No data is shared with third parties.

Legal basis: Legitimate interest in statistical analysis of website usage pursuant to Art. 6(1)(f) GDPR. As Anonyze does not set cookies or access information on the end device, consent under TDDDG §25 is not required.

5. Your Rights

You have the right at any time to:

  • Obtain information about your personal data stored with us (Art. 15 GDPR)
  • Request correction of incorrect data (Art. 16 GDPR)
  • Request deletion of your data (Art. 17 GDPR)
  • Request restriction of processing (Art. 18 GDPR)
  • Request data portability (Art. 20 GDPR)
  • Object to processing (Art. 21 GDPR)
  • Lodge a complaint with a supervisory authority (Art. 77 GDPR)

6. SSL/TLS Encryption

For security reasons and to protect the transmission of confidential content, this site uses SSL or TLS encryption. You can recognize an encrypted connection by the fact that the address bar of the browser changes from "http://" to "https://" and by the lock symbol in your browser bar.