Gizlilik Politikası / Privacy Policy

1. Introduction

At Second Brain ("App", "we", "our"), we respect your privacy and are committed to protecting your personal data. This Privacy Policy explains what information we collect when you use our app, how we use it, and how we protect it.

By using this app, you agree to the practices described in this Privacy Policy.

2. Data We Collect

2.1 Account Information

• Email address
• Display name
• Profile photo URL (when signing in with Google)

2.2 User Content

• Notes and thoughts
• Tasks and to-dos
• Notebooks
• Shared notebooks and collaboration data

2.3 AI Analysis Data

• Note summaries and categories
• Emotional tone analysis
• Keywords and action items
• Weekly reports and insights

2.4 Technical Data

• Device information (operating system, app version)
• Push notification tokens (FCM)
• Subscription and purchase information
• Usage statistics (note count, last active time)

3. How We Use Your Data

We use the data we collect for the following purposes:

• Service Delivery: To save, sync, and manage your notes
• AI Analysis: To analyze your thoughts and provide insights and suggestions
• Personalization: To customize your experience based on your preferences
• Notifications: To send important updates and reminders
• Service Improvement: To improve our app and fix bugs

4. Third-Party Services

4.1 Firebase (Google)

• Firebase Authentication: Account management and authentication
• Cloud Firestore: Data storage and synchronization
• Firebase Cloud Messaging: Push notifications
• Firebase Cloud Functions: Server-side operations

Firebase Privacy Policy:
https://firebase.google.com/support/privacy

4.2 OpenAI

Your notes are sent to OpenAI's API to generate AI-powered analysis and insights.

• Data is used to analyze note content
• Processed to extract summaries, categories, and emotional tone
• NOT used by OpenAI for model training

OpenAI Privacy Policy:
https://openai.com/privacy

4.3 Apple (StoreKit)

• Subscription and in-app purchase transactions
• Payment information is processed by Apple; we do not have access to this information

5. Data Security

• All data transmission is protected with SSL/TLS encryption
• Firebase security rules prevent unauthorized access
• Data is stored on Google Cloud Platform secure infrastructure
• Regular security audits are performed

6. Data Retention and Deletion

• Your data is retained as long as your account is active
• When you delete your account, all your data is permanently deleted
• Account deletion can be done via "Settings > Delete Account"
• Deletion is irreversible

7. Your Rights

Under GDPR and similar regulations, you have the following rights:

• Right to Access: Learn what data we store about you
• Right to Rectification: Request correction of inaccurate data
• Right to Erasure: Request deletion of your data
• Right to Portability: Receive a copy of your data
• Right to Object: Object to data processing

To exercise these rights, contact us at:
secondbrain.app.contact@gmail.com

8. Children's Privacy

Our app is designed for users aged 12 and above. We do not knowingly collect data from children under 12. If you become aware that we have collected data from a child under 12, please contact us.

9. Changes

We may update this Privacy Policy from time to time. When significant changes occur, we will notify users via in-app notification or email.

10. Contact

For privacy-related questions:

Email: secondbrain.app.contact@gmail.com