Cube Brain Trainer Privacy Policy

Effective date: July 6, 2026

Cube Brain Trainer (the "app") values your privacy and processes only the minimum information necessary. This policy explains what information the app processes, why it is processed, and what choices you have.

1. Information we do not collect

The app does not require sign-up or login, and it does not collect information that directly identifies you, such as your name, email address, or phone number. Your learning progress, practice records, and app settings are stored only on your device and are never sent to our servers.

2. Information processed for advertising

The app is free and displays Google AdMob ads to support its operation. To serve and measure ads, Google and its partners may process the following information:

Advertising identifiers (Apple's IDFA on iOS, the Android Advertising ID)
Device information and approximate location (country/region level)
Ad interaction data, such as impressions and clicks

This information is used to serve ads, control ad frequency, measure ad performance, and — where you have consented — provide personalized ads. For details on how Google processes data, see the Google Privacy Policy (https://policies.google.com/privacy).

3. Your choices and consent

iOS: Under App Tracking Transparency (ATT), the app asks for your permission before tracking. If you do not allow tracking, you will see non-personalized ads instead.
EEA/UK and other applicable regions: The app displays a consent message (Google UMP), and your choice determines whether ads are personalized.
You can reset your advertising identifier or opt out of personalized ads at any time in your device settings (iOS: Settings > Privacy & Security > Tracking / Android: Settings > Google > Ads).

4. Children's privacy

The app is not primarily directed at children, and we do not knowingly collect personal information from children under 13 — or under a higher minimum age where local law requires one (for example, 14 in the Republic of Korea).

5. Data retention and deletion

Records stored on your device are removed when you delete the app. Retention and deletion of advertising-related data are governed by the Google policy above and your device's ad settings.

6. Changes to this policy

This policy may be updated to reflect changes in applicable laws or in the service. Updates will be posted on this page together with a new effective date.

7. Contact

Privacy inquiries: lastchoice86@naver.com