Effective Date: July 9, 2026 | Last Updated: July 9, 2026
Summary: Number Blockudoku is a free, offline puzzle game. We do not collect any personal information. The only data-related activity is through Google AdMob, which serves ads and may collect limited device identifiers for ad delivery purposes. You can opt out of personalized advertising through your device settings.
1. Introduction
This Privacy Policy describes how Number Blockudoku ("the App", "we", "us") handles information when you use our mobile application. We are committed to protecting your privacy and being transparent about our practices.
This App is designed as a single-player, offline puzzle game. It does not require user registration, does not collect personal information, and does not enable user-to-user communication.
2. Information We Do NOT Collect
The App does not collect, store, or transmit any of the following:
Your name, email address, phone number, or any personally identifiable information (PII)
Photos, videos, audio, or files from your device
Your contacts or address book
Your precise or approximate geographic location
Your financial or payment information
Biometric data
Health or fitness data
Messages or communications content
Browsing or search history
Device clipboard content
3. Information Processed by Third-Party Services
The App integrates Google AdMob to display advertisements. AdMob may automatically collect certain limited information for the purpose of serving ads. This is governed by Google's own privacy policy.
3.1 Data Processed by Google AdMob
Data Type
Purpose
Retained By
Advertising ID (GAID)
Ad personalization and frequency capping
Google
Device model and manufacturer
Ad rendering and compatibility
Google
Operating system version
Ad rendering and compatibility
Google
Language and locale settings
Ad relevance (language matching)
Google
Network type
Ad loading optimization
Google
App interaction events
Ad performance measurement
Google
Important: This data is collected and processed entirely by Google. We do not have access to, store, or share any of this information. Google's collection and use of this data is subject to Google's Privacy Policy.
3.2 Google AdMob Permissions
The App requests the following permissions relevant to advertising:
AD_ID (Android 13+): Access to the advertising identifier for personalized ads. This permission is declared in the app manifest but is only used by Google AdMob.
4. How We Use Information
We do not use, sell, rent, or trade any user data. The only data processing that occurs is:
Ad Serving: Google AdMob uses device-level data (not personal data) to serve relevant advertisements within the App.
App Functionality: The App stores your game progress (levels completed, scores, settings, achievements) locally on your device using Android's built-in storage mechanisms (Room database and DataStore). This data never leaves your device.
5. Local Data Storage
The App stores the following data locally on your device only:
Game progress (completed levels, scores, stars earned)
Game save states (in-progress levels)
Daily challenge completion records
Achievement unlock status
User preferences (sound, music, theme selection, language)
Earned coins and purchased items
Tutorial completion status
This data is stored using Android Room database and DataStore Preferences. It is not transmitted to any server. You can clear this data by uninstalling the App or through your device's application settings.
6. Children's Privacy
The App is designed to be suitable for all ages, including children under 13. We comply with the Children's Online Privacy Protection Act (COPPA) and the Google Play Families Policy.
We do not knowingly collect personal information from children under 13.
The App does not contain social features, user accounts, or any mechanism for children to provide personal information.
AdMob may serve ads, but no personal data is collected by us from any user, including children.
7. Data Security
We take reasonable measures to protect the limited data involved in this App:
All ad-related network communications use encryption in transit (TLS/SSL).
Local game data is stored using Android's secure storage mechanisms.
No user data is transmitted to our servers (we do not operate any servers for this App).
8. Your Choices and Controls
Opt out of personalized ads: On Android 12+, go to Settings > Privacy > Ads > Delete advertising ID or opt out of personalization. On Android 13+, you can also revoke the AD_ID permission in the App's permission settings.
Reset your advertising ID: Go to Settings > Privacy > Ads > Reset advertising ID.
Delete local data: Uninstall the App, or go to your device Settings > Apps > Number Blockudoku > Storage > Clear Data.
Limit ad tracking: On your device, go to Settings > Privacy > Ads > Opt out of Ads Personalization.
9. Third-Party Links
The App may display advertisements that contain links to third-party websites or apps. We are not responsible for the privacy practices of these third parties. We encourage you to review the privacy policies of any third-party services you interact with.
10. Changes to This Privacy Policy
We may update this Privacy Policy from time to time. Any changes will be reflected by updating the "Effective Date" at the top of this page. We encourage you to review this policy periodically. Continued use of the App after changes constitutes acceptance of the updated policy.
11. Contact Us
If you have any questions or concerns about this Privacy Policy or our practices, please contact us at:
Email: yihuihui@gmail.com
Developer: YiHui.
12. Consent
By using Number Blockudoku, you consent to this Privacy Policy. If you do not agree with any part of this policy, please do not use the App.