Privacy Policy

Last updated: April 13, 2026

Sudoku - Master the Logic (the "App") is a mobile application developed by ZG Development ("we", "us", or "our"). This Privacy Policy explains how we collect, use, and disclose information when you use our App on iOS (Apple App Store) and Android (Google Play Store).

1. Information We Collect

The App uses third-party services that may collect information used to identify you. This includes:

• Identifiers: Unique identifiers such as Advertising ID (IDFA for iOS, AAID for Android) and Device ID.
• Financial Information: Data related to one-time In-App Purchases (e.g., "Remove Ads") processed via RevenueCat and the respective App Store. We do not collect or store your payment card details.
• Usage Data: Information about how you interact with the App (e.g., levels played, settings adjusted).

2. Third-Party Services

To support the functionality and monetization of our App, we use the following third-party providers:

• Google AdMob: For displaying advertisements. They use identifiers to serve personalized ads unless opted out.
• Firebase (Google): For basic app analytics and stability monitoring.
• RevenueCat: Used solely to manage and validate your one-time purchase of the "Remove Ads" feature. This ensures that the feature remains unlocked for you across your devices.

3. Tracking and Personalized Ads

On iOS, we request permission to track your activity via the App Tracking Transparency (ATT) framework. On Android, we use the standard Advertising ID. You can manage these permissions in your device's privacy settings.

4. One-Time Purchases

The App offers a one-time purchase to remove all advertisements. Once purchased, this information is linked to your App Store or Google Play account to ensure the service is provided as intended.

5. Children's Privacy

This App does not knowingly collect personally identifiable information from children under 13. If you believe a child has provided such data, please contact us immediately.

6. Changes to This Privacy Policy

We may update our Privacy Policy from time to time. We notify you of any changes by posting the new Privacy Policy on this page.

7. Contact Us

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

Email: info@zgdevelopment.ch