Privacy Policy
In plain English: we don't know who you are unless you give us your email for the waitlist. The diagnostic runs under a random anonymous ID. We use no advertising, no third-party trackers, and we never sell data. Questions or requests: episteme.privacy@gmail.com.
Who we are
Episteme is an independent project providing a free cognitive diagnostic for IB Mathematics ("the Service") at episteme-mvp.pages.dev. For anything in this policy, contact episteme.privacy@gmail.com.
What we collect
- Waitlist email (only if you join): your email address, which button you joined from, and your target and predicted grades at the time.
- Anonymous usage data: a random session ID generated in your browser (not linked to your name or email), your quiz answers and per-question timing, "I'm not sure" flags, which screens you reached, how you arrived at the site (referrer and campaign tags), a truncated browser type, and anonymous error reports if something breaks. This is our calibration data — it tells us which questions work and which misconceptions are common.
- IP address (transient): used solely to rate-limit our AI endpoint against abuse and deleted within roughly 24 hours. Our hosting providers (Cloudflare, Supabase) process IPs in transit like any website host.
Browser storage
We use your browser's localStorage to remember your quiz progress, the anonymous session ID, and how you first arrived. There are no advertising cookies, no third-party analytics, and no cross-site tracking of any kind. Clearing your browser data removes all of it.
AI processing
In live mode, your quiz answers and target grade are sent through our server to Anthropic (a US-based AI provider) to generate the narrative in your report. This never includes your email, name, or any account identifier. Under Anthropic's commercial terms, API data is not used to train their models. Transfers are safeguarded under the EU-US Data Privacy Framework and standard contractual clauses.
Where your data lives
Waitlist and usage data are stored with Supabase in the European Union (Ireland). The site itself is served by Cloudflare's global network.
Why we're allowed to process it
- Consent — the waitlist: you type your email and submit it.
- Legitimate interests — anonymous product analytics and abuse prevention, designed so they cannot identify you.
How long we keep it
- Waitlist emails: until early-access communication concludes, or immediately on request.
- Anonymous usage data: up to 24 months.
- Rate-limiting IPs: about 24 hours.
Your rights
You can ask us to access, correct, delete, restrict, or export your data, or object to processing — email episteme.privacy@gmail.com and we'll act on it. You can also complain to your local data protection authority. Note that the anonymous usage data cannot be traced back to you, so requests can only apply to waitlist data.
Age
The diagnostic itself is anonymous and open to anyone. To join the waitlist you should be 16 or older, or have a parent or guardian's permission.
Emails we send
If you join the waitlist, we'll only email you about Episteme early access. Every email includes a way to unsubscribe. No spam, no third-party offers.
Changes
If this policy changes, we'll update this page and the date at the top. Material changes will be flagged to waitlist members by email.