Privacy Policy

Last updated: June 22, 2026

Texbook is a free K–12 Math learning app for students in Cambodia. This Privacy Policy explains what information we collect and how we use it.

1. Information We Collect

Texbook does not require you to create an account or provide any personal information such as your name, email address, or phone number. To remember your learning progress on your device, we store a randomly generated anonymous device identifier locally on your device.

2. How We Use Information

The anonymous device identifier is used solely to save and restore your learning progress (for example, quiz results and lessons viewed). We do not use it to identify you personally.

3. Information We Do Not Collect

We do not collect, sell, or share any personal data. We do not track you across other apps or websites for advertising purposes.

4. Third-Party Content

Some lessons include videos embedded from YouTube. When you watch an embedded video, YouTube may collect data in accordance with its own privacy policy. We embed videos using privacy-enhanced settings where available.

5. Children's Privacy

Texbook is intended for students, including children. Because we do not collect personal information, no personally identifiable data about children is gathered or stored.

6. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be posted on this page with an updated revision date.

7. Contact Us

If you have any questions about this Privacy Policy, please contact us at koeungkosal@gmail.com.