Last updated: 29 September 2026
We collect the email address and password you provide when creating an account, along with usage data such as the decks you study and your session history. We do not sell your personal data to third parties.
Your data is used solely to operate the service — to authenticate you, sync your study progress, and improve the app experience.
You can delete your account at any time from the Profile page. Upon deletion, all associated data is permanently removed within 30 days.
We use Mixpanel and Google Analytics to understand how the app is used and improve it. These set cookies and collect anonymous usage events (for example, decks created, study sessions completed, and pages viewed). We never send your email, name, or the content of your cards. You can opt out by enabling “Do Not Track” in your browser or by using an ad/tracker blocker.
Premium payments are processed by Paddle.com, our merchant of record. We never see or store your card number — Paddle handles it directly. We keep only what we need to run your subscription: a Paddle customer and subscription id, the plan, its status and renewal date. Paddle processes payment and billing details, such as your name, billing address and the country used for tax, as an independent controller under its own privacy policy.
For privacy-related questions contact us at [email protected].