Your data.
Your call.

A little clarity about what happens when you explore Underline.

Last updated 15 September 2026

The signup form

Email collection is currently turned off. The form checks the address in your browser, clears it and shows a confirmation. Your address is not sent to us or saved by this website, and no subscription or email is created.

Your health data

This website does not connect to Apple Health or collect health data. The screens and insights shown here introduce the intended iPhone experience. We'll provide information about the app's data practices when it becomes available.

Browsing this website

Our hosting provider may process technical information, such as IP addresses and request logs, to deliver and protect the website. We haven't added advertising trackers or marketing analytics. The signup form does not use cookies or browser storage to retain your email.

When signup opens

We'll update this notice before we begin collecting email addresses, with details of how they're used and how to leave the list.