Privacy Policy

This Privacy Policy outlines how user information is handled in the mobile application “Kokoro Diary (hereinafter referred to as “this Application”).

1. Collection and Purpose of Use

This Application collects and uses user information for the following purposes:

• Advertisement delivery via Google AdMob
• User authentication via Firebase Authentication (Note: passwords are not stored)
• Storage of user-entered diary data in Cloud Firestore
• Analysis and summarization of diary entries using OpenAI (ChatGPT)

2. Types of Information Collected

• Firebase UID (User Identifier)
• Diary content
• Device information such as Advertising ID
• App usage logs and access data (e.g., IP address, timestamps)

3. Third-Party Services

This Application uses the following third-party services. Each of these services may manage and use user information in accordance with their respective privacy policies:

• Google Firebase (Authentication, Firestore, App Check, etc.)
• Google AdMob
• OpenAI (ChatGPT)

4. Opt-Out

Users can stop the collection of information by uninstalling this Application.

5. Data Retention

User data is retained during app usage and for a certain period afterward. To request deletion, please contact us at the email address below.

6. Security

We implement reasonable security measures to protect collected information from leaks, alterations, and unauthorized access.

7. Children's Privacy

This Application is not intended for children under the age of 13. If it is discovered that we have collected personal information from a child under 13, it will be promptly deleted.

8. Changes to the Policy

This Privacy Policy may be updated as needed. The latest version will always be posted on this page.

9. Contact

If you have any questions about this Privacy Policy, please contact us at the email address below.

📧 support@knotnest.jp