Privacy Policy

Last updated: March 7, 2026

1. Data Controller

Hans Renz
Freudenstädter Straße 6
71034 Böblingen, Germany
Email: hrenz@hans-renz.de

2. Overview

This privacy policy applies to the website vivarium.no-logs.de and the iOS app "Vivarium". We take your privacy seriously. Below we inform you about the processing of personal data in accordance with the EU General Data Protection Regulation (GDPR).

3. Data Processing by the App

Vivarium collects, stores, and transmits no personal data whatsoever. The app:

• makes no network connections
• contains no analytics or tracking services
• contains no advertising
• stores no data on the device or on servers

All simulation data exists only in device memory during runtime and is discarded when the app is closed.

4. Data Processing by the Website

This website is purely static. No cookies are set, no analytics tools are used, and no personal data is collected or processed.

When you visit this website, the hosting server automatically records technical access data (server log files):

• IP address of the requesting device
• Date and time of access
• Requested URL
• Browser type and operating system

This data is technically necessary for delivering the website and is not combined with other data sources. Legal basis: Art. 6(1)(f) GDPR (legitimate interest in the technical provision of the website).

5. Third-Party Services

This website embeds the App Store badge from Apple (tools.applemediaservices.com). When loading this graphic, Apple may receive technical data such as your IP address. Apple's privacy policy applies.

6. Your Rights

Under the GDPR, you have the following rights:

• Access to stored data (Art. 15 GDPR)
• Rectification of inaccurate data (Art. 16 GDPR)
• Erasure (Art. 17 GDPR)
• Restriction of processing (Art. 18 GDPR)
• Objection to processing (Art. 21 GDPR)
• Lodge a complaint with a supervisory authority (Art. 77 GDPR)

Competent supervisory authority: The State Commissioner for Data Protection and Freedom of Information of Baden-Württemberg, Germany.

7. Contact

For questions about data protection, please contact: hrenz@hans-renz.de