Privacy

Last updated November 7, 2026

This notice covers saint.app, the waitlist for Halo. The waitlist is for parents and other adults.

What we collect

• Your email address and the time you joined.
• How you found us. If you arrived from an ad or a shared link, the codes in that link (such as utm_source and Meta’s click ID, fbclid), the page that sent you, the page you landed on and which of our pages you joined from. Your browser keeps these for up to 30 days so we can save them with your signup.
• The country your connection came from, which Cloudflare works out for us.
• Your browser’s details when you join: its type and version (the “user agent”), and the ids in Meta’s pixel cookies, so we can tell Meta if you reserve later (see “Meta pixel” below). Not for visitors in the European Union, the European Economic Area, the UK or Switzerland.
• Your answers to the optional questions after you join: your kids’ ages, whether they have a device of their own, what you’d want Halo to help with, which three features matter most to you, about how much you spend a month on your kids’ learning, and what you’d expect Halo and its subscription to cost. Please don’t include your children’s names or anything else that identifies them.
• If you book a call with Loren, the details you enter into Calendly.
• If you take part in our AI interview, your answers, typed or spoken, which Perspective AI collects and transcribes for us. They come with a random number that matches them to your signup, and how you found us, but not your email address.
• If you reserve a Halo, your email address, the name on your card and your billing details, which you enter on Stripe’s checkout page. Stripe takes the payment; we never see your card number.

We don’t store your IP address.

Cookies and tracking

• Meta pixel. We use Meta’s pixel to measure our ads on Facebook and Instagram. It sets cookies and tells Meta when you view a page, join the waitlist, tap to talk to Loren, book a call, finish the interview, tap to reserve or reserve a Halo. Once you’ve joined, the pixel sends your email address with these, hashed in your browser first. When you join the waitlist or reserve, our server tells Meta too, so it’s counted even if the page couldn’t. It sends your email address hashed (scrambled so it can’t be read back), your browser’s details, Meta’s cookie ids and, when you join, your IP address, which we don’t keep. Meta may connect this to your Facebook or Instagram account under its own privacy policy. You can limit this in your Facebook and Instagram ad settings and in your browser. We don’t load the pixel, or tell Meta anything, for visitors in the European Union, the European Economic Area, the UK or Switzerland.
• Calendly. The thank-you page shows Calendly’s booking calendar, which sets its own cookies. Visitors in the EU, the EEA, the UK and Switzerland see Calendly’s cookie banner there. Calendly’s privacy policy covers what you enter there.
• Perspective AI. The interview keeps a random id in your browser’s storage, and Perspective AI’s privacy policy covers what you tell it. Visitors in the EU, the EEA, the UK and Switzerland see nothing of it until they tap to start it.
• Your browser’s storage. We keep how you found us (for up to 30 days) and, for the open tab only, your signup, so the thank-you page works.

What we use it for

• To email you about Halo: one short update a week while we build it, and news when it launches. Every email has an unsubscribe link.
• To learn which ads and links bring parents to Halo, and to build Halo with your answers in mind.
• If you reserve a Halo, to hold your place, to refund you if you ask, and to count your deposit towards Halo. If you weren’t on the waitlist yet, reserving adds you to it, so you get the same emails.

Who we share it with

We never sell or rent your email address. These companies run parts of the waitlist for us: Cloudflare (hosting and storage), Kit (our email provider, which holds your email address, how you found us and, if you reserve a Halo for yourself, your first name from checkout, and sends the welcome emails and the weekly update), Calendly (booking calls), Perspective AI (the AI interview), Stripe (reservation payments), Google Fonts (the page’s fonts) and Meta (the pixel described above).

Children

The waitlist is for adults, and we don’t knowingly collect personal information from children. The optional questions ask parents about their kids in general terms only.

How long we keep it

Until you ask us to delete it, or until we no longer need it for Halo’s launch.

Your choices

Unsubscribe from any email with one click. To see what we hold about you, or to have it deleted, email care@saint.app. You can also block cookies in your browser.

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