Who runs the site
The site is operated by AIXIS LLC, a Vermont limited liability company.
What stays on your device
When you answer a practice question, the site saves whether you got it right in your browser's local storage, under a key for this site. That data is never sent to a server. You can clear it in your browser settings at any time.
What the contact form collects
If you use the contact or corrections form, we receive what you type: your message, an optional email address if you want a reply, and the page you were on. We use it to answer you and to fix errors. We do not add you to a mailing list.
The form uses Cloudflare Turnstile to block automated submissions. Turnstile may process technical information about your browser to tell people from bots.
Hosting and analytics
The site is served through Cloudflare. Cloudflare processes requests and may keep standard server logs, such as IP address and pages requested, to deliver the site and keep it secure. The site sets no advertising cookies and uses no advertising trackers.
What we do not do
We do not sell personal information. We do not run ads. We do not build profiles of visitors.
Your choices
You can use the site without giving us any information. To ask us to delete something you sent through the contact form, use the contact form and say which message.
This site is for adults and is not directed to children under 13.
Changes
If this policy changes, the date at the top of this page changes with it.
Related: Editorial policy · Privacy · Terms · Corrections