Privacy Policy

Last updated: April 1, 2026

Knightfall Studio ("we", "our", or "us") operates the Card Chess Battle mobile application. This page informs you of our policies regarding the collection, use, and disclosure of personal data when you use our app.

1. Information We Collect

We collect the following types of information:

• Account Information: When you sign in with Google or Apple, we receive your display name, email address, and profile photo. This is used to create your player profile.
• Game Data: Your game statistics (ELO rating, wins, losses, level), card collection, deck configurations, and tournament results are stored to provide the game experience.
• Device Information: We may collect device type and operating system version for crash reporting and performance optimization.

2. How We Use Your Information

• To provide and maintain the game service
• To enable online multiplayer matchmaking and friend features
• To track your progress, leaderboard rankings, and tournament results
• To send push notifications about game events (friend requests, tournament updates)
• To improve app performance and fix bugs

3. Data Storage

Your data is stored securely using Google Firebase (Firestore and Realtime Database). Data is encrypted in transit and at rest. We retain your data as long as your account is active.

4. Third-Party Services

We use the following third-party services:

• Firebase (Google): Authentication, database, analytics, and push notifications
• Apple Sign In: Optional authentication method
• Apple StoreKit: In-app purchases processing

Each service has its own privacy policy governing data use.

5. In-App Purchases

Card Chess Battle offers optional in-app purchases for virtual coins. All transactions are processed by Apple through the App Store. We do not collect or store any payment information.

6. Children's Privacy

Card Chess Battle is rated 9+ and is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us immediately.

7. Data Deletion

You can request deletion of your account and all associated data by contacting us at the email below. We will process your request within 30 days.

8. Your Rights

Depending on your jurisdiction, you may have the right to:

• Access the personal data we hold about you
• Request correction of inaccurate data
• Request deletion of your data
• Object to processing of your data
• Data portability

9. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new policy on this page and updating the "Last updated" date.

10. Contact Us

If you have any questions about this Privacy Policy, please contact us:

Email: knightfallstudio@gmail.com