Privacy Policy

Last updated: November 10, 2026

1. Data Controller

Marco Waltenberger
Eselsbergsteige 137
89075 Ulm
Germany
Email: support@marble-app.de

See also our Impressum (legal notice, German).

2. Data We Collect

When using the "MARBLE" app, the following personal data is processed:

3. Minimum Age

The app may only be used by persons aged 16 and older. If you believe a person under 16 has created an account, please contact us at support@marble-app.de so we can delete the account promptly.

4. Purpose of Data Processing

5. Legal Basis

Balancing of interests for the product statistics: Our legitimate interest is to see where new users get stuck when starting with the app and to improve the app there. For this we store only a few timestamps, no content of your recipes, plans or lists, and only during the first 90 days after your registration. Our server derives the data from entries that are stored anyway (no additional access to your device); it stays in our database in the EU, is analysed only in aggregated form, is not disclosed and is not used for advertising or profiling. You can object at any time without giving reasons (section 9). In our assessment, your interests therefore do not override ours.

6. Third-Party Services and Data Transfers

We use the following third-party services as data processors or as independent controllers:

Providers based in the USA (Google LLC, Apple Inc., RevenueCat, Inc.) are certified under the EU-US Data Privacy Framework; data transfers are carried out on the basis of the European Commission's adequacy decision of 10 July 2023 (Art. 45 GDPR). EU Standard Contractual Clauses (Art. 46(2)(c) GDPR) additionally apply as a supplementary safeguard. Supabase stores data exclusively in the EU and is not subject to third-country transfers.

7. Data Retention

Your data is stored as long as your account exists. When you delete your account, all personal data will be removed within 30 days. Crash reports and anonymized analytics data are retained for up to 90 days. Product statistics are deleted 24 months after the respective event, and at the latest when your account is deleted. Subscription billing data may be retained for up to 10 years beyond account deletion due to commercial and tax law retention obligations (§ 147 AO, § 257 HGB).

8. App Permissions

Depending on the feature in use, the app requires the following device permissions:

You can revoke these permissions at any time in your device's system settings.

9. Your Rights

You have the following rights regarding your personal data:

To exercise your rights, contact us at support@marble-app.de.

You also have the right to lodge a complaint with a data protection supervisory authority, in particular the:
Landesbeauftragter für den Datenschutz und die Informationsfreiheit Baden-Württemberg (LfDI BW)
Lautenschlagerstraße 20, 70173 Stuttgart, Germany
www.baden-wuerttemberg.datenschutz.de

10. Reporting Infringing Content (Notice and Takedown)

Rights holders and other affected parties can report content that infringes their rights (e.g., copyright infringements) directly in the app via the "Report" function or by email to support@marble-app.de. Please identify the affected content and your ownership of the rights as specifically as possible. Reports are reviewed in a timely, diligent and objective manner; infringing content is removed or blocked.

11. Automated Decision-Making

We do not make automated decisions within the meaning of Art. 22 GDPR that produce legal effects or similarly significantly affect you. No profiling takes place.

12. Data Protection Officer

Due to the size and structure of the operation, there is no legal obligation to appoint a data protection officer (§ 38 BDSG, Art. 37 GDPR). For data-protection-related concerns, please contact the controller named in Section 1 directly.

13. Contact

For privacy-related questions, reach us at:
support@marble-app.de

Contact by email: When you email us — directly or from the app via "Send feedback", "Report content / Contact" or by reporting a recipe — we process your email address, your name (if provided) and the content of your message. The app prefills part of the email: feedback with the app version and operating system, a recipe report with the recipe ID, recipe name, group ID and your user ID, so that we can find the content. You see the text in your email app before sending and can change it. We use this data only to handle your request. The legal basis is Art. 6(1)(b) GDPR where your request concerns the use of the app or your subscription, otherwise Art. 6(1)(f) GDPR (our interest in answering enquiries and reviewing reported content). Emails to support@marble-app.de are forwarded by the forwarding service of our domain provider Namecheap (Namecheap, Inc., USA) to a mailbox at Google (Gmail, Google LLC, USA) and stored there. We delete your emails once your request has been fully handled, at the latest after three years, unless statutory retention obligations apply.

Deutsche Version