We collect almost nothing
No accounts, no cookies, no ads, no trackers. Last updated October 23, 2026.
Cookies
This site sets no cookies. There is no cookie banner because there is nothing to consent to.
Visit counts
We count visits with Cloudflare Web Analytics, which works without cookies and does not track you across sites. It tells us how many people read each page, from which country and which kind of device, and which site sent them. We never see or store your IP address. Cloudflare, which hosts the site, processes requests to deliver it under its own privacy policy.
Your call and Practice
What you enter in "Your call" and "Practice" is saved only in your own browser (local storage), so the page can grade it on its date. It is never sent to us. You can delete it any time by clearing this site's data in your browser, with the "Start over" button, or by not using those features. The "Save" and "Restore" buttons move it to and from a file on your own device.
If you write to andres@brierindex.com, we keep your message only to answer it and do not share it. Email to that address is handled by Proton Mail.
What we never do
- Sell or share personal data.
- Run ads, ad trackers or social media pixels.
- Ask for or store wallet keys, seed phrases or personal details.
Your rights
Because we hold no personal data about readers, there is usually nothing to access, correct or delete. If you think we hold something about you, write to us and we will answer.
Changes
If this page changes, the date above changes with it, and the change is listed on What's new.