Privacy Policy

Last updated October 26, 2026

GlucoSee shows your continuous glucose monitor (CGM) readings on your phone and on the web, and lets you share them with people you choose. This page explains what information GlucoSee collects, where it goes, and how to remove it.

In short: GlucoSee only uses your information to show you your readings and to share them with the people you pick. It has no ads or analytics, and it doesn't sell your information to anyone.

What GlucoSee collects

Account details. Your email address and, if you add them, your name and a password. Passwords are stored only as a secure hash. If you sign in with Google, GlucoSee receives your Google email address and name.
Glucose data. Your CGM readings and trend arrows, plus any carbs and insulin from files you import.
Your Dexcom login. The Dexcom Share username and password you connect, used to fetch new readings.
Settings. Things like units, target range, theme and graph layout, so they follow you between devices.
Sharing. The email addresses you share your readings with.
Phone notification access. If you turn on the glucose notification, a random access token for that phone so the notification can update while the app is closed.

If you use GlucoSee without an account, all of this stays on your device and nothing is sent to GlucoSee's servers.

How it's used

To fetch your readings from Dexcom, store them, and show them to you on every device you sign in on.
To show your readings to the people you've shared with, and theirs to you.
To send you sign-in codes by email.

GlucoSee doesn't use your information for advertising, profiling or anything unrelated to showing your readings.

Who else handles it

Dexcom. GlucoSee signs in to Dexcom's Share service with your Dexcom login to get your recent readings, the same way the Dexcom Follow app does. Dexcom's privacy policy covers what Dexcom does.
Supabase hosts GlucoSee's accounts and database, and stores your readings, settings and Dexcom login. Your Dexcom password is kept encrypted.
Netlify hosts the GlucoSee website.
Google, only if you choose Sign in with Google.
The people you share with. They can see your readings, carbs and insulin, but they can't change anything. You can stop sharing at any time.

These providers process information only to run GlucoSee. GlucoSee doesn't sell or rent your information, and doesn't share it with anyone else unless the law requires it.

On your phone

The Android app can also save your Dexcom login on the phone so the notification keeps updating while the app is closed. It's encrypted with a key that never leaves the phone. Readings are also kept on the device so the app opens quickly and works offline.

Security

All connections use HTTPS. Each account can only read its own data and data that has been shared with it. Dexcom passwords are stored encrypted, both on the server and on the phone.

Keeping and deleting your information

Disconnect Dexcom in Settings to delete your stored Dexcom login.
Sign out to remove your data and Dexcom login from that device. Your account keeps your data.
Delete your account in Settings → Account → Delete account. Your account, readings, carbs and insulin, settings, shares and stored Dexcom login are deleted right away and can't be recovered. If you can't sign in, email support@glucosee.app from the address you used and it will be deleted within 30 days.

Otherwise, your information is kept for as long as you have an account.

Children

GlucoSee isn't meant for children under 13 to sign up for on their own. A parent or caregiver can create an account and share a child's readings with family.

Not a medical device

GlucoSee is for personal reference only. Don't use it to make treatment decisions. Keep using your Dexcom app as your main display and for alerts.

Changes

If this policy changes, the new version will be posted here with a new date at the top.

Contact

Questions or requests: support@glucosee.app