Privacy Policy

Last Updated: May 6, 2026

マイリズム (hereinafter referred to as "the App") respects your privacy and is committed to protecting your personal information.

1. Information We Collect

The App collects the following information:

• Google Account Information: Email address used during login
• Apple ID Information: User identifier and email address when using Sign in with Apple
• Habit Data: Habits, goals, and progress recorded by users
• HealthKit Data (optional): Data obtained from Apple HealthKit, within the scope you permit, when you link a habit to it. We handle such data in accordance with Apple's terms and store it as habit records under your account on our servers (Firebase). We do not use HealthKit data for advertising or similar purposes, and we do not disclose it to third parties without your explicit consent, except as described in section 4.
• App Usage Statistics: App usage patterns and error information
• Device Information: OS type, version, and app version

2. How We Use Your Information

We use the collected information for the following purposes:

• Providing and improving App services and features
• Providing user support
• Analyzing usage statistics and improving app quality
• Data backup and restoration
• Sending important notifications about service updates

3. Information Management and Protection

Data Storage

• All data is encrypted and stored on Google Cloud Platform (Firebase)
• Communications are protected with TLS/SSL encryption protocols
• Access to data is restricted with authentication and authorization

Data Retention

• All personal data will be deleted within 30 days after account deletion
• Anonymous aggregated data may be retained for statistical purposes
• Backup data follows the same retention policy

4. Sharing with Third Parties

We do not sell, trade, or rent your personal information. We may share information only in these cases:

• Service Providers: Third-party services necessary for app operations (Firebase, Google Cloud)
• Legal Requirements: When disclosure is required by law or court order
• Business Transfers: In case of merger, acquisition, or asset sale
• With Consent: When you explicitly agree to share

5. Your Rights

Data Access and Management

• Export your data anytime through in-app settings
• Request complete deletion of your data via account deletion
• Access and review all stored personal information
• Correct or update your information

Opt-out Options

• Disable push notifications in app settings
• Log out from your account
• Uninstall the app to stop all data collection

6. Changes to Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any significant changes through in-app notifications. Your continued use of the App after changes indicates acceptance of the updated policy.

7. Contact Us

For privacy-related inquiries or to exercise your rights, please contact us through the in-app "Contact Us" form or the feedback feature in Settings.

Cookie Policy

Our website (including this privacy policy page) may use cookies to:

• Remember your language preference
• Remember your theme preference
• Analyze usage patterns for improvement

Third-Party Services

The App uses the following third-party services that may collect information:

• Google Firebase: Analytics, crash reporting, and cloud storage
• Google Sign-In: Authentication service
• Sign in with Apple: Authentication service