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Privacy Policy

Last Updated: March 15, 2026

This Privacy Policy describes how 1 Line Journal ("we", "our", or "the app") collects, uses, and protects your information when you use our mobile application.

1. Information We Collect

1.1 Personal Information You Provide

• Account Information: Email address (if you choose to create an account for cloud backup)
• Journal Entries: Text content, mood selections, and timestamps of your daily entries
• User Preferences: App settings, theme preferences, and reminder times

1.2 Automatically Collected Information

• Device Information: Device model, operating system version, and unique device identifiers
• Usage Data: App interactions, features used, and crash reports
• Analytics: We use Firebase Analytics to understand how users interact with our app

2. How We Use Your Information

We use the collected information for the following purposes:

• To provide and maintain the app functionality
• To sync your journal entries across devices (if you enable cloud backup)
• To send you reminder notifications (if enabled)
• To improve app performance and fix bugs
• To understand usage patterns and improve user experience
• To provide customer support

3. Data Storage and Security

3.1 Local Storage

By default, all your journal entries are stored locally on your device and are encrypted. Your data never leaves your device unless you explicitly enable cloud backup.

3.2 Cloud Storage (Optional)

If you choose to enable cloud backup, your encrypted journal entries are stored in Firebase Cloud Firestore. We use industry-standard encryption both in transit and at rest.

3.3 Security Measures

• All data transmissions use SSL/TLS encryption
• Journal entries are encrypted before cloud storage
• Optional PIN/biometric lock for app access
• Regular security audits and updates

4. Third-Party Services

We use the following third-party services:

• Firebase (Google): For authentication, cloud storage, and analytics
• Google Play Services: For app distribution and updates

These services may collect information used to identify you. Please refer to their privacy policies:
• Firebase Privacy Policy
• Google Privacy Policy

5. Data Sharing and Disclosure

We do NOT sell, trade, or rent your personal information to third parties.

We may disclose your information only in the following circumstances:

• With your explicit consent
• To comply with legal obligations or court orders
• To protect our rights, privacy, safety, or property
• In connection with a business transfer (merger, acquisition, etc.)

6. Your Rights and Choices

You have the following rights regarding your data:

• Access: View all your stored data within the app
• Export: Download your journal entries in JSON or PDF format
• Delete: Delete individual entries or your entire account
• Opt-Out: Disable analytics, notifications, or cloud backup at any time

7. Children's Privacy

Our app is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately.

8. Data Retention

• Local Data: Stored on your device until you delete the app or clear data
• Cloud Data: Retained as long as your account is active
• Account Deletion: All cloud data is permanently deleted within 30 days of account deletion
• Analytics Data: Anonymized analytics data may be retained for up to 14 months

9. International Users

Your information may be transferred to and maintained on servers located outside of your country. By using our app, you consent to the transfer of information to countries that may have different data protection rules.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last Updated" date. You are advised to review this Privacy Policy periodically for any changes.

11. California Privacy Rights (CCPA)

If you are a California resident, you have the right to:

• Know what personal information is collected
• Know whether your personal information is sold or disclosed
• Say no to the sale of personal information
• Access your personal information
• Request deletion of your personal information

Note: We do NOT sell your personal information.

12. GDPR Rights (European Users)

If you are in the European Economic Area (EEA), you have the following rights:

• Right to access your data
• Right to rectification
• Right to erasure ("right to be forgotten")
• Right to restrict processing
• Right to data portability
• Right to object
• Right to withdraw consent