Effective Date: May 26, 2026

1. Data Collection and Use SEC 1K is committed to protecting your privacy. While your core learning progress, vocabulary mastery data, and personal settings are saved exclusively and locally on your own device, we do use third-party services to support the application.

2. Third-Party Advertising and Analytics To keep SEC 1K operational and provide a premium experience, we use Google AdMob to serve advertisements. The Google Mobile Ads SDK may collect and process certain information, including:

• Device Identifiers: Such as your device's advertising ID.
• Usage Data: Information about your product interaction to provide relevant ads and analyze ad performance.

3. App Tracking Transparency (ATT) - iOS Only For iOS users, we strictly follow Apple's App Tracking Transparency framework. We will request your explicit permission before tracking your activity across other companies' apps and websites for targeted advertising. You can opt-in or opt-out at any time via your iOS device's Privacy Settings.

4. Children's Privacy We do not knowingly collect personal information from children under the applicable age of consent. The ads served are strictly filtered to comply with standard app store policies.

5. Changes to This Policy We may update our Privacy Policy from time to time to reflect changes in our practices or regulatory requirements. We will notify you of any changes by updating the "Effective Date" at the top of this page.

6. Contact Us If you have any questions or suggestions about our Privacy Policy, do not hesitate to contact us at: [email protected]