Cookies: none
No analytics cookies, no advertising cookies, no third-party trackers, no consent banner — because there is nothing to consent to. If your browser reports a cookie from this domain, we would genuinely like to know about it: tell us.
Local storage: one value
Local storage is not a cookie. It is a small store your browser keeps for a site, it is never attached to a request, and it is not visible to us. The test writes one entry.
| Key | What it holds | Why | Lifetime |
|---|---|---|---|
iqv_prev | Your last IQ score and the timestamp of that attempt | So a retake can tell you whether the difference clears the reliable-change threshold instead of leaving you to guess | Until you clear browser data |
That is the entire list. It holds a number and a date. It does not hold your answers, your response times, or anything identifying, and it never leaves your device.
Why a retake needs it
A second attempt at this test raises scores by roughly four points on average with no change in underlying ability — the practice effect. Without a stored previous score, the page would either say nothing about a change or invite you to compare two numbers whose difference is mostly noise. With it, the page can state the threshold a difference has to clear before it means anything.
What happens during the test
Your answers and response times live in the page's working memory while you are taking the test and are discarded when the tab closes. They are not written to storage and not transmitted. The privacy page has the full inventory of what exists and what does not.
Removing it
Clearing site data for this domain in your browser settings removes the entry. Private or incognito browsing discards it when the window closes. Nothing on the site breaks if you do either — you simply lose the comparison with a previous attempt.
Shared result links
A shared result carries its figures inside the link itself rather than in storage. Opening someone else's result link writes nothing to your browser.
Why so little
Not restraint so much as architecture. The test is scored on your device, so there is no session to keep, no result to store and no funnel to measure people through. The privacy page has the full inventory, and the terms cover shared links.
Third-party embeds
There are none. No embedded video, no social widgets, no font services, no tag managers. Outbound links to partners are ordinary links and set nothing until you follow them, at which point that site's own policy applies.