Privacy Policy

Welcome to 4 Fälle, a German grammar learning application. Your privacy is important to us. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application.

1. Information We Collect

4 Fälle ("we," "our," or "us") is designed with privacy in mind. We collect minimal information necessary to provide you with the best learning experience:

• Local Storage Data: Your learning progress, preferences, settings, and completed exercises are stored locally on your device
• Device Information: Basic device type and operating system information for app compatibility
• Purchase Verification: Minimal transaction metadata (purchase receipt/token) to verify your one-time purchase and maintain app access. We do not collect, process, or store your payment card details, billing address, or any sensitive financial information - these are handled exclusively by Apple App Store or Google Play Store
• Audio Data: The app uses audio playback for pronunciation features, but does not record or transmit any audio data

What We Don't Collect: We do not collect your name, email address, phone number, location data, browsing history, or any other personally identifiable information beyond what's necessary for purchase verification.

2. How We Use Your Information

The limited information we collect is used exclusively to:

• Provide Learning Services: Store your progress, track completed exercises, and save your preferences
• Verify Purchase: Confirm your one-time payment and ensure continued app access
• Improve the App: Understand which features are most helpful to enhance the learning experience
• Technical Support: Diagnose and fix technical issues if you report a problem

3. Pricing Model

4 Fälle is offered as a one-time purchase for €4.99. This is not a subscription - you pay once and own the app forever.

With your purchase, you receive:

• Lifetime access to all app features
• All current content: Complete coverage of all four German cases
• Future updates: All feature improvements, new content, and bug fixes at no additional cost
• No recurring charges: No subscriptions, no hidden fees, no in-app purchases

Payment is processed securely through Apple App Store or Google Play Store. We only receive a purchase verification token - never your payment details.

4. Information Sharing and Disclosure

We do not sell, rent, or trade your personal information. Period.

Your learning data stays on your device. We may only share limited information in these specific circumstances:

• App Stores: Purchase verification tokens are shared with Apple or Google to confirm your payment and maintain app access
• Legal Requirements: If required by law, court order, or government regulation
• Business Transfer: If our business is acquired or merged, your data would transfer under the same privacy protections

No Third-Party Analytics: We do not use third-party analytics services that track your behavior across apps or websites.

No Advertising: We do not share data with advertisers or ad networks. There are no ads in this app.

5. Data Security

We take the security of your information seriously:

• Local Storage: Your learning data is stored securely on your device using iOS/Android encryption
• Minimal Server Data: We store only purchase verification tokens on our servers, which are encrypted and secured
• No Unnecessary Collection: We don't collect what we don't need
• Secure Transmission: Any data transmitted is encrypted using industry-standard protocols

While we implement strong security measures, no method of electronic storage or transmission is 100% secure. We cannot guarantee absolute security, but we are committed to protecting your information.

6. Data Retention

• Local Data: Your learning progress and preferences remain on your device until you delete the app or reset your data through the app settings
• Purchase Tokens: Purchase verification tokens are retained for as long as you own the app to maintain your access. These may be retained after app deletion to prevent unauthorized refund abuse and ensure you can restore your purchase if you reinstall
• Deletion: You can delete all local app data at any time through the app settings or by uninstalling the app

7. Your Rights (GDPR Compliant)

Under applicable data protection laws (including GDPR for EU users), you have the following rights:

• Right to Access: Request a copy of the data we hold about you (limited to purchase verification)
• Right to Rectification: Request correction of inaccurate data
• Right to Erasure: Request deletion of your data, subject to legal obligations for purchase verification and fraud prevention
• Right to Restriction: Request restriction of processing in certain circumstances
• Right to Data Portability: Receive your data in a structured, machine-readable format
• Right to Object: Object to certain types of processing
• Right to Withdraw Consent: You can withdraw consent at any time where we rely on consent

To exercise any of these rights, contact us at [email protected]

8. Children's Privacy

4 Fälle is suitable for language learners of all ages, including children. However, the app is designed to be used under parental supervision for children under 13 (under 16 in the EU).

We do not knowingly collect personal information from children. All data is stored locally on the device. If you are a parent or guardian and believe your child has provided us with personal information, please contact us so we can delete it.

Parents can review and delete any local data through the app settings on their child's device.

9. International Users

This app is operated from Germany. If you are accessing the app from outside Germany or the European Union, please be aware that your information may be transferred to, stored, and processed in Germany where our servers are located and our central database is operated.

By using this app, you consent to the transfer of your information to Germany and agree that it will be governed by German and EU data protection laws, which provide strong privacy protections.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time to reflect changes in our practices, technology, legal requirements, or other factors.

When we make changes:

• We will update the "Last Updated" date at the top of this policy
• We will notify you through the app or via email for material changes
• Continued use of the app after changes constitutes acceptance of the updated policy

We encourage you to review this Privacy Policy periodically.

11. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy or your data, please contact us:

Email: [email protected]
Address: Hauptstr. 4, 61276 Weilrod, Germany
Phone: +49 15753674255

We will respond to all requests within 30 days in accordance with applicable data protection laws.

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