Privacy Policy

Last updated: September 2026. This page explains, in plain English, what data IQ Challenge collects — which is very little.

We don't require your personal data to play

You don't need an account to play, and we never require personal information. Your quiz answers, score, estimated IQ, and percentile are computed locally in your own browser and never sent to us. When you close the page, that data is gone.

Email and phone number — only if you share them

On the results screen you can optionally ask us to email your results. If you do, we collect the email address you enter — and a phone number only if you choose to add one — so we can send your result and occasional new-challenge updates. We never sell this information, and we never share it except with the email-delivery service that sends the messages. You can unsubscribe from updates at any time via the link in any email, or contact us to have your details deleted.

What we may collect automatically

Like most websites, our hosting provider may record basic technical information in server logs, such as your IP address, browser type, and the pages you visit. We use this only to keep the site running and to understand overall traffic.

Cookies and analytics

IQ Challenge sets no cookies of its own. We do use Google Analytics to understand overall traffic to the site — it sets cookies in your browser and collects aggregate usage data such as pages visited, approximate location, and device type. We don't use it to identify you personally. You can control or block cookies through your browser settings at any time.

Contact

Questions about this policy? Contact us.