Privacy Policy for Sudoku Master
Last Updated: January 12, 2026
NexGrape ("we," "our," or "us") operates the Sudoku Master mobile application (the "App"). This Privacy Policy explains how we collect, use, and protect your information when you use our App.
Information We Collect
Information You Provide
- Display Name: When you sign in via Game Center (iOS) or Google Play Games (Android), we collect your display name to show on the leaderboard.
- Game Scores: We collect your game scores, completion times, and difficulty levels to display on the leaderboard.
Information Collected Automatically
- Device Information: We may collect device type, operating system version, and unique device identifiers for analytics and to improve our services.
- Game Center / Play Games ID: A unique identifier from Apple Game Center or Google Play Games used to identify your leaderboard entries.
Third-Party Services
Our App uses the following third-party services that may collect information:
Google AdMob
We use Google AdMob to display advertisements. AdMob may collect:
- Device identifiers
- IP address
- General location (country/region)
- Ad interaction data
For more information, see Google's Privacy Policy.
Firebase (Google)
We use Firebase Firestore to store leaderboard data. Firebase may collect:
- App usage data
- Crash reports
- Performance data
For more information, see Firebase Privacy Policy.
Apple Game Center (iOS)
If you sign in with Game Center, Apple may collect information according to Apple's Privacy Policy.
Google Play Games (Android)
If you sign in with Play Games, Google may collect information according to Google's Privacy Policy.
How We Use Your Information
We use the collected information to:
- Display your scores on the leaderboard
- Show your rank among other players
- Display personalized advertisements
- Improve the App's performance and user experience
- Provide customer support
Data Storage and Security
- Leaderboard data is stored securely on Firebase servers
- We do not sell your personal information to third parties
- We implement reasonable security measures to protect your data
Children's Privacy
Our App does not knowingly collect personal information from children under 13. The App displays advertisements that comply with applicable children's privacy laws. If you believe we have collected information from a child under 13, please contact us.
Your Rights
You have the right to:
- Access: Request information about the data we hold about you
- Delete: Request deletion of your leaderboard data by contacting us
- Opt-out: You can opt out of personalized ads in your device settings
How to Delete Your Data
To delete your leaderboard data, please contact us at [email protected] with your Game Center or Play Games display name.
Advertising
We display ads through Google AdMob. You can opt out of personalized advertising:
- iOS: Settings → Privacy → Apple Advertising → Turn off Personalized Ads
- Android: Settings → Google → Ads → Opt out of Ads Personalization
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 Privacy Policy in the App and updating the "Last Updated" date.
Contact Us
If you have any questions about this Privacy Policy, please contact us at:
Email: [email protected]
Developer: NexGrape
App: Sudoku Master
Summary
| Data Type | Purpose | Shared With |
|---|---|---|
| Display Name | Leaderboard | Stored in Firebase |
| Game Scores | Leaderboard rankings | Stored in Firebase |
| Device ID | Analytics, Ads | Google AdMob |
| Game Center/Play Games ID | Player identification | Apple/Google |
This privacy policy is designed to comply with GDPR, CCPA, and App Store/Play Store requirements.
Last updated: January 12, 2026