Your privacy matters to us. Here's what data Checkmark collects and how it's used.
What we collect
- Account information — name, email, university, major
- Usage data — which lessons you watch, quiz scores, study time
- Device information — a browser fingerprint hash for device management (not raw browser data)
- Payment information — processed by Stripe; we never store full card numbers
How we use it
Your data is used to deliver your courses, track your progress, enforce device limits, and improve the platform. We do not sell your data to third parties.
For full details, read our Privacy Policy.