What we keep, and why.
Reading the site needs nothing from you. We don't run ad trackers or analytics scripts. Data only comes in when you subscribe to the newsletter or use Ask.
Newsletter
Your email goes to Mailchimp, which sends the newsletter. Nothing is sent until you confirm by email, and every issue has an unsubscribe link.
Ask
- Your free question.Cloudflare Turnstile checks you're a person. To keep it to one free question, we record your IP address and a random device ID stored in your browser. Both are dropped after 30 days.
- Signing in. Clerk handles sign-in with Google or GitHub. We get your name, email, and a user ID. We never see a password.
- Your questions and answers.Claude, running on Amazon Bedrock, writes each answer. AWS doesn't use them to train models. When you're signed in, we save your questions and answers so you can reopen them. They're deleted after 12 months, or right away when you click Clear history. If you sign in within 24 hours of your free question, it moves into your history too.
- Quality checks. Questions and answers are also logged in LangSmith so we can find wrong answers and fix them.
- Newsletter at sign-in. The box is unchecked. We only subscribe you if you tick it.
Where it lives
Amazon Web Services (US), Clerk, Cloudflare, Mailchimp, LangSmith, and Vercel, which hosts this site and keeps standard server logs. We don't sell your data or share it with anyone beyond these services.
Deleting your data
Clear history on the Ask page removes your saved questions. To delete your account or anything else we hold, email arielherrera@analyticsariel.com. We'll confirm within 30 days.
Last updated November 12, 2026.