Privacy Policy for the Nexter App

We take the protection of your personal data very seriously. This Privacy Policy explains what data is collected when you use the “Nexter” app, how it is used, and what rights you have.

1. Controller

Crewz GmbH
Paul-Ehrlich-Straße 7
79106 Freiburg im Breisgau
Germany
Represented by: Marcel Bihl
📧 info@crewz.io

2. Data We Collect

a) Data you provide

When using the app, the following data may be collected:

• Email address (for registration and verification)
• Content created within the app (e.g. activities, sessions, progress)

Authentication is handled via Firebase Authentication using email verification (magic link or code).

b) Automatically collected data

To ensure functionality and improve the app, the following data may be collected automatically:

• Usage data (e.g. app interactions, screen views)
• Device information (e.g. device model, operating system, language)
• Crash reports

These data are collected using:

• Firebase Analytics
• Firebase Crashlytics

3. Purpose of Processing

Your data is processed for the following purposes:

• Providing and operating the app
• Storing and synchronizing your data
• Improving the app and user experience
• Ensuring stability and error-free operation

4. Email Communication

We use your email address to send you the sign-in link or sign-in code for your account. The legal basis is Art. 6(1)(b) GDPR (provision of the app).

We do not send marketing or newsletter emails. If, in exceptional cases, we inform you by email about significant changes to the app, we do so on the basis of Art. 6(1)(b) GDPR or our legitimate interest under Art. 6(1)(f) GDPR in keeping you informed about the service you use. Every such email includes an option to unsubscribe.

For the technical delivery of emails we use the service provider Twilio SendGrid (Twilio Inc., USA) as a processor. Transfers are carried out in accordance with GDPR safeguards (standard contractual clauses).

Right to object: You may object at any time, without giving reasons, to the use of your email address for such informational emails (Art. 21(2) GDPR). An informal message to info@crewz.io is sufficient. After your objection, you will only receive emails that are technically necessary for using your account.

5. In-App Purchases

The app offers optional paid features.
Payments are processed via:

• Apple App Store / Google Play Store
• RevenueCat

We do not process payment data ourselves. Only your purchase status is processed to unlock features.

6. Hosting and Data Processing

We use services provided by Google Firebase (Google Ireland Limited, Ireland).
Services used:

• Firebase Authentication
• Firebase Firestore
• Firebase Analytics
• Firebase Crashlytics

Data is primarily processed in data centers within the European Union (e.g. europe-west region).
Transfers to countries outside the EU cannot be fully excluded but are carried out in accordance with GDPR safeguards (e.g. standard contractual clauses).

7. Data Sharing

Your personal data is not shared with third parties, except:

• with necessary technical service providers (e.g. Firebase, RevenueCat, SendGrid)
• if required by law

8. Permissions

The app requires the following permissions:

• Internet access (for synchronization and functionality)

No additional device permissions are used.

9. Data Retention and Deletion

Your data is stored only as long as necessary for the use of the app.
You can at any time:

• delete your account
• request deletion of all stored data

Upon deletion, all personal data will be permanently removed unless legal obligations require otherwise.

10. Legal Basis

Processing of your personal data is based on:

• Art. 6(1)(a) GDPR (consent)
• Art. 6(1)(b) GDPR (performance of a contract)
• Art. 6(1)(f) GDPR (legitimate interest, e.g. information about significant changes to the app)

11. Your Rights

You have the right to:

• access your stored data
• request correction or deletion
• restrict processing
• request data portability
• object to processing (for emails, see section 4)

📩 To exercise your rights, contact: info@crewz.io

You also have the right to lodge a complaint with a data protection supervisory authority. The authority responsible for us is the State Commissioner for Data Protection and Freedom of Information of Baden-Württemberg (Landesbeauftragter für den Datenschutz und die Informationsfreiheit Baden-Württemberg).

12. Changes to this Privacy Policy

We reserve the right to update this Privacy Policy to reflect legal or technical changes. The latest version will always be available in the app.

Last updated: September 16, 2026
Crewz GmbH