Privacy Policy for Sudoku App

Last Updated: May 2025

dowhiletrue.co („we,“ „us,“ or „our“) operates the Sudoku mobile application and desktop software (the „App“). This Privacy Policy explains how we collect, use, disclose, and protect your information when you use our App.

By using the App, you agree to the collection and use of information in accordance with this policy.

1. Information We Collect

1.1 Information You Provide

  • Account Information: When you create an account, we collect your email address, username, and password
  • Profile Information: Username and display preferences
  • Social Login Data: If you sign in with Google or Facebook, we receive your basic profile information and email address

1.2 Information Automatically Collected

  • Game Data: Your game progress, statistics, completion times, hints used, errors made, and difficulty preferences
  • Device Information: Device type, operating system, unique device identifiers, and app version
  • Usage Data: Features used, time spent in the app, and interaction patterns
  • Advertising Identifiers: Google Advertising ID (Android) or IDFA (iOS) for ad personalization
  • Analytics Data: App performance metrics, crash reports, and usage statistics

1.3 Location Information

We collect approximate location data (city/region level) for:

  • Leaderboard regional rankings
  • Compliance with local regulations
  • Ad personalization (if applicable)

2. How We Use Your Information

We use the collected information for:

2.1 App Functionality

  • Providing and maintaining the App
  • Saving and synchronizing your game progress
  • Managing your account and preferences
  • Displaying your statistics and achievements
  • Operating leaderboards and rankings

2.2 Communication

  • Responding to your inquiries and support requests
  • Sending important updates about the App
  • Notifying you about new features (with your consent)

2.3 Improvement and Analytics

  • Analyzing usage patterns to improve the App
  • Monitoring and preventing technical issues
  • Developing new features and content
  • Conducting research and analysis

2.4 Advertising

  • Displaying personalized advertisements (free version)
  • Measuring ad performance and effectiveness
  • Providing rewarded ad experiences for hints

3. How We Share Your Information

3.1 Service Providers

We share information with third-party service providers:

  • Firebase: Authentication, database storage, analytics, and crash reporting
  • Google AdMob: Advertisement delivery and analytics
  • Google Play Services: Authentication and app functionality
  • Apple Services: iOS platform services and analytics

3.2 Social Features

  • Leaderboards display usernames and scores publicly
  • Premium status may be visible to other users

3.3 Legal Requirements

We may disclose information when required by law or to:

  • Comply with legal processes
  • Protect our rights and property
  • Prevent fraud or security issues
  • Protect user safety

3.4 Business Transfers

In case of merger, acquisition, or sale of assets, user information may be transferred to the new entity.

4. Data Storage and Security

4.1 Storage Location

  • Guest Users: Data stored locally on your device only
  • Registered Users: Data stored on Firebase servers (Google Cloud Platform)
  • Regional Storage: Data may be processed in multiple geographic locations

4.2 Security Measures

We implement appropriate security measures including:

  • Encryption of data in transit (HTTPS/TLS)
  • Secure authentication protocols
  • Regular security audits and updates
  • Access controls and monitoring

4.3 Data Retention

  • Active accounts: Data retained while account is active
  • Inactive accounts: Data may be deleted after 24 months of inactivity
  • Analytics data: Retained for up to 14 months
  • Crash reports: Retained for 90 days

5. Children’s Privacy

The App is not directed at children under 13. We do not knowingly collect personal information from children under 13. If we discover such information, we will promptly delete it.

6. International Data Transfers

Your information may be transferred to and processed in countries other than your own. We ensure appropriate safeguards are in place for such transfers in compliance with applicable laws.

7. Your Rights and Choices

7.1 Access and Control

You have the right to:

  • Access your personal information
  • Update or correct your information
  • Delete your account and associated data
  • Export your game data
  • Opt-out of certain data collection

7.2 Account Management

  • Update your username in app settings
  • Change from guest to registered account
  • Link or unlink social accounts
  • Delete game progress and statistics

7.3 Advertising Preferences

  • Opt-out of personalized ads through device settings
  • Upgrade to premium for ad-free experience
  • Adjust ad tracking preferences in your device settings

8. Cookies and Tracking Technologies

The App uses:

  • Analytics cookies: To understand app usage
  • Advertising cookies: For ad personalization
  • Functional cookies: To remember preferences
  • Firebase SDK: For various app services

9. Third-Party Privacy Policies

This Privacy Policy does not apply to third-party services. Please review their policies:

10. California Privacy Rights (CCPA)

California residents have additional rights under CCPA:

  • Right to know what personal information is collected
  • Right to delete personal information
  • Right to opt-out of sale of personal information (we do not sell personal information)
  • Right to non-discrimination for exercising privacy rights

11. European Privacy Rights (GDPR)

EU residents have additional rights under GDPR:

  • Right to data portability
  • Right to restriction of processing
  • Right to object to processing
  • Right to lodge a complaint with supervisory authorities

Legal Basis for Processing

  • Consent: For analytics and advertising
  • Contract: For providing app services
  • Legitimate interests: For improving the app and security

12. Changes to This Privacy Policy

We may update this Privacy Policy periodically. We will notify you of significant changes through:

  • In-app notifications
  • Email (for registered users)
  • App store update notes

Continued use after changes constitutes acceptance of the updated policy.

13. Data Breach Notification

In the event of a data breach affecting your personal information, we will:

  • Notify affected users within 72 hours
  • Provide details of the breach
  • Explain mitigation steps taken
  • Offer guidance on protective measures

14. Platform-Specific Practices

14.1 Android

  • Google Play Services integration
  • Google Advertising ID usage
  • Android backup services (if enabled)

14.2 iOS

  • Apple App Store compliance
  • IDFA usage for advertising
  • iCloud backup (if enabled by user)

14.3 Desktop

  • Local data storage only
  • No advertising on desktop version

15. Contact Us

For privacy-related questions or to exercise your rights, contact us at:

Data Protection Officer

For EU residents, our Data Protection Officer can be reached at: info@dowhiletrue.co

16. Consent and Acceptance

By using the Sudoku App, you consent to this Privacy Policy and our data practices. If you do not agree, please do not use the App.

Effective Date: This Privacy Policy is effective as of May 2025.

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