What this site knows about you

The short version

No ads, no tracking pixels, no selling or sharing your data, ever. The only personal information this site can hold is an email address you chose to give the waitlist. Everything the tools save (packing lists, the emergency card, appointment picks) stays in your browser and never reaches a server.

The waitlist

If you join the app waitlist, you give us your email address and, optionally, which mode fits you. That goes to Buttondown, the newsletter service that processes email for us, and nowhere else. Signup passes your IP address to Buttondown once so it can filter spam signups; we never store or log it ourselves. You confirm by clicking a link (so nobody can sign you up as a prank), and every email has an unsubscribe link. Unsubscribing stops the emails; if you want the record deleted entirely, ask and it's gone.

Waitlist emails are launch news only. No open tracking, no click tracking, no "we noticed you haven't opened our last three emails."

Visit counts

Page views are counted with Cloudflare Web Analytics, a cookieless counter. It tells us "the sick-day guide was read 120 times this week," not who read it. No cookies, no fingerprinting, no profile that follows you across the web. What you look up about your health is your business.

Guide feedback

At the end of each guide there's a "Was this helpful?" question. Votes are anonymous counters: a vote stores the guide name and a timestamp, nothing else. If you add a comment, we store the comment text with the guide name and timestamp, and that's the whole record; there is no account, no ID, and no way for us to connect it to you. Your browser remembers that you already answered (a small note saved on your device) so the same guide doesn't ask twice.

Tools that save on your device

The trip packing builder, the emergency card, the appointment prep builder, your mode choice, and your theme preference all save their data in your browser's local storage. That data never leaves your device and we never see it. What you type on the emergency card, including medical details, stays in your browser; printing happens locally too. Clearing your browser data erases all of it.

What never happens

No advertising, no ad networks, no tracking pixels, no third-party analytics beyond the cookieless counter above, no selling or renting data, no "trusted partners." The site runs on Vercel, which keeps standard short-lived server logs like any host; we never write email addresses or anything personal into our own logs.

When the app ships

The T1DAL app isn't out yet, but its data rules are already set and they'll hold: your glucose history lives on your device, not our servers. Our backend holds only the encrypted connection tokens needed to fetch your CGM data, and deletes them the moment you disconnect. AI features receive summaries (like daily averages), never your raw glucose trace, and always ask before anything is sent. Nothing in the app will ever compute or suggest an insulin dose. If any of this changes, this page changes first and the changelog says so.

Questions

This is a one-person project, so privacy questions go straight to the person responsible: email jake@t1dal.com, or message @typeonejake on TikTok or @dietjakee on Instagram. If something here is unclear or you want your data deleted, that's the route.

Trademarks

Dexcom is a registered trademark of Dexcom, Inc. T1DAL is not affiliated with or endorsed by Dexcom. Other product names mentioned in guides belong to their respective owners and appear for description only.