Privacy Policy

1. Information We Collect

1.1 Account Information

When you create an account or sign in, we collect:

• Display name chosen by you
• A unique user ID generated by Firebase Authentication
• Selected avatar

We do not require an email address or password to play. Anonymous authentication is supported.

1.2 Game Data

We store game-related data in Firebase Firestore, including:

• Game scores and statistics
• Leaderboard rankings
• In-game tokens and purchases
• Boss progress and achievements
• App settings and preferences

1.3 Advertising

The app uses Google Mobile Ads (AdMob). AdMob may collect and use data to serve personalized or non-personalized ads, including device identifiers such as Advertising ID. For more information, see Google's Privacy Policy.

1.4 Device Information

We may collect basic device and app version information via package_info_plus for compatibility and debugging purposes only.

2. How We Use Your Information

• To provide and improve gameplay features
• To display leaderboards and duel results
• To restore your progress across devices
• To serve advertisements
• To detect and prevent abuse or cheating

3. Data Sharing

We do not sell your personal data. Data may be shared with:

• Google Firebase for authentication, database, and analytics, subject to Google's terms
• Google AdMob for advertising

No other third parties receive your data.

4. Data Retention

Your account and game data are retained as long as your account is active. You may request deletion at any time by contacting us.

5. Children's Privacy

OneCalc is not directed to children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided us with personal data, please contact us and we will delete it promptly.

6. Security

We use Firebase's industry-standard security features to protect your data. However, no method of transmission over the internet is 100% secure.

7. Contact Us

If you have any questions or requests regarding this Privacy Policy, please contact us at haez.degi@gmail.com.

8. Changes to This Policy

We may update this Privacy Policy from time to time. The "Last updated" date at the top of this page reflects the most recent revision. Continued use of the app after changes constitutes acceptance of the updated policy.