1. Introduction
Sudoku Master ("App") is published by ElfAi Technologies ("we," "us," or "our"). This Privacy Policy explains what information is collected when you use Sudoku Master, how it is used, and how it is protected.
If you do not agree with this Privacy Policy, please do not use the App.
This policy applies specifically to Sudoku Master. For our company-wide privacy practices, see the ElfAi Technologies Privacy Policy.
2. Who We Are
- Operator: ElfAi Technologies
- App: Sudoku Master
- Website: https://www.elfai.dev
- Support: support@elfai.dev
3. Information We Collect
3.1 Data stored on your device
Game progress, statistics, settings, language preference, and theme choices are stored locally on your device. This data is not transmitted to our servers.
3.2 Advertising data
The free version of Sudoku Master displays advertisements through Google AdMob. AdMob may collect device identifiers and usage data for ad serving and personalization. On iOS, your consent is requested via App Tracking Transparency (ATT). You may opt out of personalized ads at any time through your device settings.
3.3 Subscription and purchase data
Subscription transactions are managed through RevenueCat. Payment information is processed by Apple or Google and is not stored by us. We may receive subscription status and purchase metadata to verify your ad-free entitlement.
3.4 Game Center data (optional)
If you enable Apple Game Center, leaderboard data is handled by Apple according to Apple's privacy policies. We do not receive your personal Game Center profile information.
3.5 Device and usage information
- Device type and operating system
- App version
- Crash and error logs (via platform and third-party SDKs)
- Basic usage data necessary for ad serving and subscription validation
4. How We Use Information
We use information to:
- Provide and operate the App and its features
- Display advertisements in the free version
- Validate and manage Sudoku Master Pro subscriptions
- Provide customer support
- Maintain security and prevent abuse
- Improve reliability and performance
- Comply with legal obligations
We do not sell your personal information.
5. Third-Party Services
Sudoku Master uses the following third-party services:
- Google AdMob — Ad serving and measurement
- RevenueCat — Subscription and purchase management
- Apple Game Center — Optional leaderboard (iOS only)
- Apple App Store / Google Play — App distribution and payment processing
Each provider has its own privacy policy governing how they handle data. We encourage you to review their policies.
6. Data Retention
Locally stored game data remains on your device until you delete the App or clear app data. Subscription records retained by Apple, Google, or RevenueCat are subject to their respective retention policies.
7. Data Sharing
We share information only with the third-party service providers listed above, as necessary to operate the App, and when required by law or to protect our rights and users.
8. Children's Privacy
Sudoku Master is not directed at children under 13. We do not knowingly collect personal information from children under 13. If you believe a child has provided personal information, contact us at support@elfai.dev.
9. Your Rights
Depending on your location, you may have rights to access, correct, delete, or restrict processing of your personal information. To exercise a request, contact support@elfai.dev.
You can manage ad personalization through your device settings and subscription management through your App Store or Google Play account.
10. International Transfers
Information may be processed in countries other than your country of residence through our service providers. By using the App, you understand that such transfers may occur.
11. Security
We use reasonable technical and organizational measures to protect information. However, no system can guarantee absolute security.
12. Changes to This Policy
We may update this Privacy Policy from time to time. If we make material changes, we will update the date above. Continued use of the App after changes become effective means the updated policy applies.
13. Contact
For privacy-related questions or requests: