Privacy Policy

This Privacy Policy is designed to inform you about how your information is processed when you use the "DeerLing: Korean FlashCards" mobile application ("App" or "Service"). Our application does not collect or store users' personal data. All data is stored locally on your device, and no personal information is shared with third parties. This policy provides detailed information about what data is processed, how it is used, and what rights you have regarding your data.

1. Types of Data Collected

Our application does not collect users' personal information (such as name, email, phone number, location, etc.). Only the following data is processed:

1.1. Local Data

All data, including your progress, preferences, and vocabulary lists, is stored locally on your device. No data is transmitted to external servers or third parties.

1.2. Technical Data

To ensure the proper functioning of the app and improve the user experience, certain technical data may be collected automatically. This data may include:

• Your device's IP address,
• Device type (e.g., phone or tablet),
• Operating system and version,
• Frequency and duration of app usage.

This data is kept anonymous and is not used to identify users.

2. Data Storage Location and Retention Period

2.1. Local Storage

All data is stored locally on your device. No data is stored on external servers or cloud infrastructure.

2.2. Supabase Integration

The Application uses Supabase to read vocabulary lists and other learning materials. No user data is written to or stored on Supabase.

3. Purpose of Data Use

The collected data is used for the following purposes:

• To ensure the core functionality of the app (e.g., displaying flashcards and vocabulary lists),
• To monitor and improve the app's performance,
• To keep the home widget feature up to date,
• To send in-app notifications for learning reminders.

4. Data Sharing

Our application does not share collected data with third parties. Data is processed only in the following cases:

Supabase: Vocabulary lists and learning materials are read from Supabase to ensure the app's functionality. Supabase implements industry-standard security measures to protect the data.

5. Background Service

Our app uses a background service to keep the home widget feature updated. This service continues to run even when the app is closed. A notification is displayed on your device to indicate that the service is running. Users can disable this feature at any time.

6. User Rights

Our application values users' full control over their data. In this context, you have the following rights:

• Delete Data: You can clear your progress or delete the app at any time, which will remove all locally stored data.
• Stop the Service: You can stop the background service at any time.
• Uninstall the App: When you uninstall the app from your device, all your data is automatically deleted.

7. Children's Privacy

Our application is not specifically designed for users under the age of 13. However, since no personal data is collected, this does not pose an additional risk. Parents or guardians who have concerns about their children using the app can contact us.

8. Security

Our application implements industry-standard security measures to ensure the safety of user data. All data is stored locally on your device and is protected against unauthorized access.

9. Changes to the Privacy Policy

We may update our Privacy Policy from time to time. When changes take effect, we will notify you through a notification within the app. The "Last updated" date at the top of this policy will be revised. We recommend that you check this policy regularly to stay informed about any changes.

10. Contact Us

If you have any questions or concerns about this Privacy Policy, you can contact us using the following information:

Email: info@tohandesign.com