Brain Master: Logic & Speed — Privacy Policy

Last updated: March 5, 2026

Brain Master: Logic & Speed ("we", "our", or "the app") is a brain training game developed by Thanh Nguyen. We respect your privacy and are committed to protecting your personal information. This Privacy Policy explains what data we collect, how we use it, and your rights.

1. Information We Collect

Account Information

• If you sign in using Email, Google, or Apple, we may collect your name, email address, and profile photo provided by your authentication provider.
• If you play as a Guest, we create an anonymous account. We do not collect your name or email, but device-related data may still be collected for analytics and advertising purposes.
• A unique User ID is generated to manage your game progress and account.

Device & Usage Information

• Device identifiers (such as device ID or advertising ID)
• Gameplay activity and interaction data
• Crash reports and performance diagnostics
• App version, device type, operating system version

2. How We Use Your Information

• To provide and maintain the game
• To save and sync your progress
• To improve gameplay experience and performance
• To analyze user behavior and fix technical issues
• To display advertisements

3. Analytics

We use Firebase Analytics to understand how players interact with the game. Firebase may collect device information, usage data, and performance data to help us improve the app.

4. Advertising

We use Google AdMob to display advertisements within the app. AdMob may collect device identifiers, advertising identifiers (such as IDFA), and interaction data to provide relevant ads.

Ads may be personalized based on your preferences and device settings. You can limit personalized advertising in your device settings at any time.

5. Tracking & App Tracking Transparency (ATT)

On iOS devices, we may request permission to track your activity across apps and websites owned by other companies using Apple’s App Tracking Transparency framework.

• If you grant permission, we may use your advertising identifier to provide personalized ads.
• If you deny permission, we will not use tracking for personalized advertising.

6. Third-Party Services

The app integrates the following third-party services:

• Firebase (Google LLC) – Analytics & Authentication
• Google AdMob – Advertising
• Apple Sign-In – Authentication
• Google Sign-In – Authentication (if applicable)

These third-party providers may collect and process data in accordance with their own privacy policies.

7. Data Retention

We retain account information and gameplay data for as long as your account remains active. Anonymous usage and analytics data may be retained for analytical purposes.

8. Account Deletion

You may request deletion of your account and associated data by contacting us at the email below. Upon verified request, we will delete your account data within a reasonable timeframe, unless required by law to retain certain information.

9. Children's Privacy

The app is not directed to children under the age of 13 (or the applicable minimum age in your country). We do not knowingly collect personal information from children. If we become aware of such data collection, we will delete it promptly.

10. Data Security

We implement reasonable technical and organizational measures to protect your data from unauthorized access, alteration, or disclosure.

11. Your Rights

Depending on your jurisdiction, you may have the right to access, correct, or delete your personal data. You may contact us to exercise these rights.

12. Contact Us

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

Email: nguyenvanthanh.cs94@gmail.com