Privacy

BlackHoles.fyi is made by Stef and Oren Lewandowski. While we finish it, the full site is open to a small group of testers, the beta, and anyone can ask for a place. This note covers the one piece of personal information the site asks for: your email address, if you ask for a place.

What we keep.

Your email address, the time you asked and the wording that stood beside the Join the waitlist button when you pressed it (at the moment: "We'll use your email address only to invite you to the beta, the early version of the site we're letting people into a few at a time."). Nothing else.

Why.

To email you an invitation when there's a place in the beta. We won't use it for anything else, and we won't share it or sell it.

Where.

On the servers of Cloudflare, the company that hosts the site, in our own account.

How long.

Until the beta is open to everyone, or until you ask us to remove it, whichever comes first.

Cookies.

The site sets one cookie, and only when you sign in to the beta: it keeps you signed in for 60 days. There are no tracking or advertising cookies.

Stef Lewandowski is responsible for this information. To see what we hold about you, or to have it removed, email hello@blackholes.fyi.

Last updated 8 November 2026.