Privacy policy

What we store

When you use TMUA Atlas without signing in, we give your browser a random guest ID so the site remembers you between visits. Your answers, scores, and timings are saved in your own browser, not on our servers.

• Guest ID cookie (tmua_guest) — a random ID stored as a cookie for up to 1 year so the site recognises your browser next time.
• Display name (tmua_name) — the nickname you type in (for example on the leaderboard page). It's stored as a cookie on your device.
• Attempts, scores, and timings — saved in your browser's localStorage under the key tmua_v1. This includes which questions you tried, your answers, your scores, and how long things took. Only you (and anyone using the same browser) can see it.
• Leaderboard opt-in flag — a small setting in your browser that records whether you chose to appear on the leaderboard. The leaderboard is local-only for now: your name and scores only show on your own device until a shared backend is added.

What we don't collect

• No accounts and no passwords.
• No email address — unless you choose to sign in later, if sign-in is ever switched on.
• No trackers and no analytics scripts watching what you do.
• No adverts and no advert cookies.
• We never sell your data — there's nothing to sell, since it lives in your browser.

Maths is rendered with KaTeX directly in your browser (client-side rendering). Nothing about your answers is sent anywhere to render it.

What about Supabase (accounts later)?

The site is built so that sign-in and cloud saving could be added later using Supabase, but that backend is optional and switched off unless the site is configured with the right environment keys. Until then, your data stays on your device and is never uploaded. If cloud saving is ever switched on, this page will be updated first to explain exactly what is stored and why.

Cookies we use

Your attempts, scores, and timings are not cookies — they live in localStorage on your device (key tmua_v1) and stay there until you clear them.

Under 18?

TMUA Atlas is made for students aged 16–18 and is safe to use without creating an account. You don't need to share your real name — a nickname is fine. If you're under 16, please check with a parent, guardian, or teacher before using the site.

Delete my data

Because your data is on your device, you can delete it yourself at any time — you don't need to email anyone:

1. Go to your dashboard or review page and use the Clear / delete option to wipe your saved attempts.
2. Clear the site's cookies (tmua_guest and tmua_name) in your browser settings for this site.
3. Clear the site's local storage (key tmua_v1) in your browser's site settings, or use “clear browsing data” for this site.

Once you do that, there is nothing left on our side to delete, because we never received your data in the first place.

Report an issue or contact us

Found a mistake in a question or something broken on the site? The in-site report-issue button has no backend yet, so reports can't be sent automatically — that's coming soon. For now, please use the contact details shown on the site (contact placeholder — details to be added) and include the question ID and what went wrong.