Zerowhen

Tell me when.

Zerowhen runs small watchers that wait for something to happen and tell you when it does: a price drops, a page changes, an appointment opens up, a certificate is about to expire. You set one up yourself, or you ask your AI assistant to set it up for you.

Between checks a watcher costs nothing. It sleeps until its next check, the reply to its request arrives, or a webhook wakes it. So it can wait for weeks and still act the moment it needs to.

Our promise

We charge you; we don't study you.

• No ads, no data sales, no training on anyone's data.
• The least data: a watcher sees only its URL, its selector, its condition and the pages it fetches. An AI check sees only what changed, and its model gets no tools.
• Delete your account and its data is gone within 24 hours, and from backups within 30 days.

Status

In private testing

Zerowhen isn't open for sign-ups yet. Questions or early access: hello@zerowhen.com