How we collect, use, and protect your information.
Last updated: March 2026
We collect information to provide and improve SD Primer. The types of information we collect include:
When you create an account, we collect your email address and any profile details you choose to provide, such as your name and professional role.
We collect information about how you interact with SD Primer, including questions answered, streaks, scores, feature usage, and learning progress. This helps us personalize your experience and improve the product.
We may collect device-specific information such as your device model, operating system version, unique device identifiers, and mobile network information.
We use your information to operate SD Primer, authenticate your account, track your progress, and deliver personalized learning experiences.
Usage data helps us understand how engineers use SD Primer so we can refine our question bank, improve the spaced repetition algorithm, and build better features.
We may use your email address to send important service updates, respond to support requests, and — with your consent — share product news and tips.
We take reasonable technical and organizational measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. However, no method of transmission over the internet or electronic storage is completely secure, and we cannot guarantee absolute security.
SD Primer may use third-party services for analytics, authentication, and infrastructure. These providers have their own privacy policies governing how they handle your data. We only share the minimum information necessary for these services to function.
We retain your personal information for as long as your account is active or as needed to provide you with the service. If you request account deletion, we will remove your personal data within a reasonable timeframe, except where retention is required by law.
Depending on your jurisdiction, you may have the following rights regarding your personal data:
To exercise any of these rights, please contact us using the information provided below.
SD Primer is not directed at children under the age of 13. We do not knowingly collect personal information from children. If we become aware that we have collected data from a child under 13, we will take steps to delete that information promptly.
We may update this Privacy Policy from time to time. When we make changes, we will revise the "Last updated" date at the top of this page. We encourage you to review this policy periodically to stay informed about how we protect your information.
If you have any questions or concerns about this Privacy Policy or our data practices, please contact us at:
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