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Privacy Policy

Last updated: January 29, 2026

HYFIT ("the App") respects user privacy and is committed to protecting personal information. This Privacy Policy explains what information the App collects and how it is used.

Information We Collect

Account Information

• Email address
• Username
• Password (encrypted)

Workout Data

• Training records (date/time, sections, times, notes)
• Statistics
• Chart data

Technical Information

• Device information
• App usage data
• Crash reports

How We Use Information

Collected information is used for the following purposes:

1. Service Provision: Storing and displaying workout records
2. Account Management: User authentication and profile management
3. Service Improvement: Bug fixes and new feature development
4. Security: Preventing unauthorized access

Information Sharing

The App does not share personal information with third parties except in the following cases:

• With explicit user consent
• When required by law
• When necessary for service provision (cloud services like Firebase)

Third-Party Services

The App uses the following third-party services:

• Firebase Authentication: User authentication
• Cloud Firestore: Data storage
• Firebase Crashlytics: Crash report collection
• Google Sign-In: Google account authentication
• Sign in with Apple: Apple account authentication

These services have their own privacy policies.

Data Storage and Deletion

• Data is stored on Firebase servers on Google Cloud Platform
• Users can delete their account at any time from the settings screen
• All data is permanently deleted when an account is deleted

Data Security

The App implements industry-standard security measures:

• Communication encryption (HTTPS/TLS)
• Password hashing
• Access control via Firebase Security Rules

Children's Privacy

The App is not intended for children under 13 years of age. We do not knowingly collect personal information from users under 13.

Changes to Privacy Policy

This Privacy Policy may be updated without notice. Important changes will be notified within the App.

Contact Us

For privacy-related questions, please contact:

Email: yamanoi.creohub@gmail.com

Developer Information

Developer: Shuta Yamanoi

Location: Chiba, Japan

Email: yamanoi.creohub@gmail.com