Kreen — Privacy Policy
Last updated: 2026-06-04
Kreen is a Chrome extension that helps medical students turn practice questions into study
notes and Anki flashcards. This policy explains what data Kreen handles and why.
What we collect
- Account info: your email and password, to create and sign in to your account. Passwords are handled by our auth provider (Supabase) and stored hashed — we never see your plaintext password.
- Question content you act on: when you click Generate, the text you selected (or the question text on the current page) is sent to our server to draft a note and flashcards. Notes and cards you choose to save are stored in your account.
- Usage counts: the number of notes you generate per day, to enforce plan limits.
What we do NOT collect
- No browsing history. Kreen reads page content only when you click Generate — never in the background.
- We do not sell or rent your data, and never use your content for advertising.
How your data is used
- To generate notes/cards, the question text is sent to OpenAI via our server. Per OpenAI's API terms, API content is not used to train their models.
- Saved notes/cards are stored in Supabase under row-level access controls that restrict each record to your own account.
- Anki export runs locally via the AnkiConnect add-on — cards go from your browser to your local Anki app, not through our servers.
- Use of information received from Chrome APIs will adhere to the Chrome Web Store User Data Policy, including the Limited Use requirements.
Third parties
| Provider | Purpose | Data shared |
|---|
| Supabase | Auth + database | email, saved notes/cards, usage counts |
| OpenAI | Note/card generation | the question text you submit |
Data retention & deletion
Your account and saved content remain until you ask us to delete them. Email
mymainemailken@gmail.com to delete your account and all data.
Security
Data is transmitted over HTTPS. Database access is protected by row-level security.
The AI provider key is stored on our server and never shipped in the extension.
Contact
mymainemailken@gmail.com