Privacy Policy

Last updated: February 18, 2025

Sinbiroum ("we", "us", "our") operates the Number Baseball mobile application. This page informs you of our policies regarding the collection, use, and disclosure of information when you use our app.

1. Information We Collect

Our app collects minimal information to provide and improve the service:

Player Name (Nickname): A nickname you enter when creating or joining a multiplayer room. This is not linked to your identity and is only visible to other players in the same room.
Game Data: Guesses, results, and room information generated during gameplay. This data is stored temporarily on Firebase Realtime Database and is deleted when the room is closed.
Analytics Data: We use Firebase Analytics to collect anonymous usage data such as screen views, game events, and general app interaction patterns. This data is not linked to your personal identity.
Language Preference: Your selected language is stored locally on your device using UserDefaults.

2. Information We Do NOT Collect

We do not collect your real name, email address, or phone number.
We do not collect location data.
We do not collect photos, contacts, or any other personal files.
We do not use advertising identifiers or track you across other apps.

3. How We Use Information

To enable multiplayer gameplay between players.
To analyze general usage patterns and improve the app experience.
To remember your language preference.

4. Third-Party Services

We use the following third-party services:

Firebase Realtime Database (Google LLC) — for multiplayer game synchronization.
Firebase Analytics (Google LLC) — for anonymous usage analytics.

These services may collect information as described in Google's Privacy Policy.

5. Data Retention

Multiplayer room data is automatically deleted when the room ends or all players disconnect.
Analytics data is retained by Firebase according to Google's standard retention policies.
Language preference is stored only on your device and can be changed at any time.

6. Children's Privacy

Our app does not knowingly collect personal information from children under 13. The app is suitable for all ages. If you believe a child has provided personal information, please contact us so we can promptly remove it.

7. Security

We use industry-standard measures to protect your data, including SHA-256 hashing for game integrity verification and secure Firebase connections (HTTPS/TLS).

8. Changes to This Policy

We may update this Privacy Policy from time to time. Changes will be posted on this page with an updated date.

9. Contact Us

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

sinbiroum@gmail.com