Effective Date: October 21, 2025
Data Controller
Von Rehberg Holding GmbH
Puschkinstraße 25
06108 Halle (Saale), Germany
E-Mail: cjeschke@vonrehberg.consulting
Data Collection and Storage
By default, we do not store any data of the user on any other medium than the smartphone and the open project instance that the user configures. Your data remains under your control and is stored locally on your device.
Optional Data Sharing
In case the user opts in to sharing crash logs and anonymous session data, we store this information on a self-hosted Countly instance. This helps us improve the application by understanding how it's being used and identifying potential issues. You can opt-out at any time through the app settings.
Legal Basis for Processing
We process your data based on your explicit consent (Article 6(1)(a) GDPR) for optional analytics and legitimate interests (Article 6(1)(f) GDPR) for app functionality and improvement.
Categories of Personal Data
• App usage data (stored locally on your device)
• Open Project configuration data (stored locally)
• Optional: Anonymous crash logs and session analytics (only if you opt-in)
• Optional: Device information for app functionality
Data Retention
• Local app data: Retained until you delete the app or clear app data
• Optional analytics data: Retained for a maximum of 5 years
• Open Project data: Controlled by your Open Project instance settings
Third-Party Data Sharing
No data will be shared with large companies like Google or similar third-party services. We are committed to keeping your data private and secure. Any optional analytics data is processed on our self-hosted infrastructure.
Your Rights (GDPR Article 15-22)
You have the right to:
• Access your personal data (Article 15)
• Erase your data (Article 17)
• Restrict processing (Article 18)
• Object to processing (Article 21)
• Withdraw consent at any time
To exercise these rights, contact us at: cjeschke@vonrehberg.consulting
Data Security
We implement appropriate technical and organizational measures to protect your data, including encryption of data in transit and at rest, secure authentication, and regular security updates.
International Data Transfers
All data processing occurs within the European Union. No data is transferred to third countries without adequate protection measures.
Children's Privacy
Our app is not intended for children under 16. We do not knowingly collect personal information from children under 16.
Policy Updates
We may update this privacy policy from time to time. We will notify you of any material changes through the app or via email. Continued use of the app after changes constitutes acceptance of the updated policy.
Complaints
If you have concerns about our data processing, you can contact us at cjeschke@vonrehberg.consulting or lodge a complaint with your local data protection authority.
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