Flare
Flare privacy policy
Last updated 14 September 2026.
Flare is a symptom diary for chronic conditions. You record how you felt on a given day, and Flare looks for things that occur together. This policy explains what is kept, where it sits, and who can reach it.
This is health information, and it is treated that way
What you type into Flare is information about your body. There is no useful way to soften that, so the rest of this page is specific rather than reassuring.
Finding patterns sends your diary to Anthropic
This is the part you are least likely to assume, so it is here rather than at the bottom. Flare does not analyse anything until you ask it to. When you tap to find patterns on the Insights screen, up to your 180 most recent days are sent to Anthropic to be read by a language model, and that includes the symptom scores, the hours you slept, the stress rating, the foods you listed and anything you wrote in the notes field.
Nothing is sent unless you ask for an analysis, and nothing is sent until at least seven days are logged. Anthropic processes the request on our behalf and does not use it to train models. If you would rather none of your diary ever left the database, do not use the pattern finding feature; every other part of Flare works without it.
What is stored
- Your email address, and which condition you chose when you signed up.
- One record per day you fill in: the severity you gave each symptom on a nought to ten scale, hours slept, a stress rating, any foods you listed, and anything you wrote in the notes field.
- The patterns Flare generates from those days, together with the stretch of dates each one was drawn from.
- Whether your subscription is active, and when the current period ends.
What is not stored
No password, because there is not one. Signing in is by a code sent to your email address. No name, no date of birth, no address, no phone number, no insurance or payment details. The app has nowhere to put them.
Who can see it
You, and nobody else using the app. Every table checks the signed in account against the owner of the row before it returns anything, so another Flare user cannot reach your days even if they go looking. There is no sharing feature, no clinician view, and no household or family account.
- Supabase hosts the database and sends the sign in codes.
- Apple processes the subscription payment. Apple tells us whether a subscription is active. It never receives anything you recorded.
- RevenueCat records that same active or inactive state so the app knows what to unlock. It receives no symptoms, no notes and no diary.
- Anthropic receives your diary entries when, and only when, you ask Flare to find patterns, as described above.
That is the complete list. Flare contains no analytics, no advertising and no tracking software of any kind. Nothing is sold, nothing is shared with anybody else, and none of it is used to train anything.
Flare is not medical advice
A pattern that two things happened near each other is not a finding about your health, and Flare does not diagnose, treat or rule anything out. The doctor summary exists to make an appointment easier to prepare for, not to replace one. If something is getting worse, speak to a clinician.
Deleting your account
From the Account tab, at any time, without asking us. It is immediate and permanent: your sign in, your profile, every day you recorded and every pattern generated from them are deleted together. Nothing is retained in a backup copy for later use, and there is no restore. If you want your diary, export the doctor summary before you delete.
Cancelling a subscription is separate and is handled in your Apple subscription settings, because Apple owns that relationship rather than us.
Contact
Flare is published by Jeffrey L Carrier.