Privacy Policy
Last updated: August 8, 2026
BiOGuide is a free, non-commercial study resource. Almost everything on the site — every topic page, every practice question, every timed attempt — works with no account at all. This page explains what happens on the small part that does involve an account: login, your profile, and the leaderboard.
What we collect
If you never create an account, we don’t collect anything about you beyond standard, anonymous web hosting logs (handled by our host, Vercel).
If you create an account (optional, via Sign Up on the Account page), we collect:
- Email and password — used only to log you in. Passwords are never stored in readable form; authentication is handled by our backend provider, Supabase, using industry-standard hashing. We never see or store your raw password.
- Display name — chosen at signup, shown publicly on the leaderboard.
- Avatar — a picture you pick from a small curated set, shown publicly next to your name.
- Country, education level, and a short “about” bio — all optional, filled in on your profile. Country is shown publicly on the leaderboard as a flag; education level and “about” are shown only on your own profile.
- Timed Attempt / quiz activity — if you submit a practice test to the leaderboard, we store your score, timing, and per-question results, tied to your account, so we can rank you and show your history.
That’s the complete list. We don’t collect payment information (the site is free), and we don’t run third-party ad or tracking scripts.
Why we collect it
Only to run the features you’re actually using: logging you in, showing your chosen name/avatar/country on the leaderboard, and keeping a record of your practice-test results so the leaderboard and your own history stay accurate. We don’t sell data, and we don’t use it for advertising.
Where it’s stored
Account and profile data lives in Supabase, a hosted Postgres database and authentication provider. The site itself is hosted on Vercel. Both are reputable infrastructure providers used by many websites — naming them here is normal and doesn’t mean either can see or use your data beyond storing/serving it on our behalf.
Row-level security rules mean other logged-in users can never read your email or your private practice-test details directly from the database — only what’s meant to be public (display name, avatar, country, leaderboard results) is visible to others.
Accounts are optional
You can read every topic page and attempt every practice question without ever signing up. An account only unlocks saving leaderboard results, a profile, and full access to BiOInsights.
Cookies and local storage
We don’t use tracking or advertising cookies. Your login session is kept in your browser’s local storage (not a third-party cookie) so you stay logged in between visits — this is standard behavior for any site with accounts, not a tracking mechanism.
Deleting your data
If you have an account, you can delete it yourself at any time: log in, go to the Account page, and use Delete my account at the bottom of your profile. This permanently and immediately removes your login, profile, avatar/country/education/about, and all leaderboard/attempt history — it cannot be undone. We keep a minimal internal record that a deletion occurred (just a date and an internal ID, nothing identifying) so we can confirm a deletion happened if you ever ask us to check.
If you’d rather we do it for you, or you have any other privacy question, email us at r6394175@gmail.com.
A note for younger users
BiOGuide’s audience includes a lot of school-age students. If you’re under the age required in your country to agree to this kind of policy on your own (for example, under 13 in the US), please ask a parent or guardian to help you sign up, or to reach out to us at the email above with any questions or a deletion request on your behalf.
Changes to this policy
If this policy changes in any meaningful way, we’ll update the “Last updated” date at the top of this page. Since BiOGuide is run by one person rather than a legal team, treat this as a clear, honest first pass rather than a final legal document — if you have concerns, please just email us.