Privacy Policy

Last updated: April 9, 2026

1. Information We Collect

When you use Koydo CDL, we collect information you provide directly (such as your email address when creating an account), information we generate automatically (such as your practice test results and learning progress), and information from third-party services (such as payment processors when you subscribe to Premium).

2. How We Use Your Information

We use the information we collect to:

• Provide, maintain, and improve the Koydo CDL platform
• Personalize your learning experience and track your progress
• Process payments and manage your subscription
• Send you service-related communications
• Improve our question quality and platform features

3. Koydo Intelligence (AI Learning System)

Koydo CDL includes an optional AI-powered learning system ("Koydo Intelligence") that analyzes your interaction patterns to provide personalized recommendations. This feature requires your explicit consent and can be disabled at any time in your account settings. When enabled, interaction data is processed to improve your study recommendations and is not sold to third parties.

4. Data Retention

We retain your account data for as long as your account is active. Practice test results and learning history are retained to allow you to track your progress over time. You may request deletion of your data at any time by contacting us.

5. Sharing Your Information

We do not sell your personal information. We share your information only with service providers who help us operate the platform (such as hosting providers and payment processors), when required by law, or with your explicit consent.

6. Data Security

We implement appropriate technical and organizational measures to protect your personal information against unauthorized access, loss, or misuse. All data is encrypted in transit and at rest.

7. Your Rights

You have the right to access, correct, or delete your personal data. You may also request a copy of your data in a portable format. To exercise these rights, please contact us at privacy@koydo.app.

8. Cookies

We use essential cookies to keep you signed in and remember your preferences. We do not use third-party advertising cookies. You can manage cookie preferences in your browser settings.

9. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of significant changes by email or by posting a notice on the platform.

10. Contact

If you have questions about this Privacy Policy or our data practices, please contact us at privacy@koydo.app.