Privacy Policy - Jojoliiga

Last Updated: January 1, 2026

1. Introduction

Jojoliiga ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our weight loss tracking application.

2. Information We Collect

2.1 Account Information

• Authentication Data: Email address, name, and profile photo (via Google Sign-In or Apple Sign-In)
• Profile Information: First name, display name, and optional profile photo URL

2.2 Health & Fitness Data

• Weight Measurements: Your weight entries, dates, and optional comments
• Goal Weight: Your target weight (optional)
• Progress Data: Weight change calculations and statistics

2.3 Usage Data

• League Activity: Leagues you join, members you interact with, and activity feed interactions (likes)
• Competition Data: Weekly race participation and rankings

3. How We Use Your Information

We use your information to:

• Provide and maintain the Jojoliiga service
• Calculate weight loss progress and competition rankings
• Display your activity and progress to league members
• Enable social features (activity feed, weekly races)
• Send important service notifications
• Improve app functionality and user experience

4. Data Sharing and Disclosure

4.1 Within Your Leagues

When you join a league, the following information is shared with other league members:

• Your first name and profile photo
• Your weight entries and progress
• Your weekly race participation and rankings
• Your activity feed posts

4.2 Third-Party Services

We use the following third-party services:

• Firebase (Google): Authentication, database, and cloud functions
• Google Sign-In: Optional authentication method
• Apple Sign-In: Optional authentication method

These services have their own privacy policies governing their use of your information.

4.3 No Sale of Data

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

5. Data Security

We implement security measures to protect your information:

• Encryption: All data transmission uses HTTPS/TLS encryption
• Firestore Security Rules: Database access is restricted to authenticated users and league members
• Server-Side Validation: All sensitive operations are validated by Cloud Functions
• Authentication: Firebase Authentication with secure token management

6. Data Retention

• Active Accounts: Your data is retained while your account is active
• Account Deletion: You can request account deletion by contacting us
• League Data: Weight entries and activity remain visible to league members even after you leave a league

7. Your Rights

You have the right to:

• Access: Request a copy of your personal data
• Correction: Update or correct your information in the app
• Deletion: Request deletion of your account and data
• Data Portability: Request your data in a portable format
• Withdrawal of Consent: Stop using the service at any time

8. Children's Privacy

Jojoliiga is not intended for users under 13 years of age. 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.

9. International Data Transfers

Your data is stored on Firebase servers, which may be located in different countries. We use Firebase's EU-region servers (europe-west1, Belgium) to minimize data transfer.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by:

• Updating the "Last Updated" date at the top of this policy
• Posting a notice in the app (for significant changes)

11. Cookie Policy

We use essential cookies and local storage to:

• Maintain your login session
• Remember your preferences
• Improve app performance

These are necessary for the app to function and cannot be disabled.

12. GDPR Compliance (EU Users)

If you are located in the European Economic Area (EEA), you have additional rights under GDPR:

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

To exercise these rights, contact us at the email below.

© 2026 Jojoliiga. All rights reserved.