Your personal health ledger
Supplements, habits, sleep, training, device numbers and annual health-check values become one dated ledger. Compare your own numbers and feelings on days with and without each change.
Connect in three steps
Connect the assistant you already talk to. “I took 400 mg magnesium tonight” becomes a dated record; “what did my logs show for magnesium?” gets a read from your own ledger.
Free · works on every plan of Claude and in ChatGPT developer mode · English and 日本語
Bring your past with you
ChatGPT: Settings → Data controls → Export. Claude: Settings → Privacy → Export data.
Feelments finds the health-related messages and proposes records — what you started, what you stopped, how you felt, your test results.
You review every proposal. One sentence of evidence stays per record; the conversation itself is never stored.
A 14-day test, day by day
Days you took it vs days you didn't, in your own numbers and your own words. A visible difference, no visible change, or not enough data yet.
A 14-day test, day by day
Shaded = the 8 days you took Magnesium 400 mg. Watch which signals ride higher inside them.
The number on the right is how much higher (or lower) that signal averaged on Magnesium 400 mg days. It appears once you've rated enough days both with and without (4+ each). A pattern in your own logs — not proof of cause.
No AI? Same thing, by hand
Tap what you took, with the dose if you like, and rate how the day felt compared with your usual. Every record — typed, spoken to an AI, or sent by a device — lands in the same place and gets the same read.
Start by hand →What goes in, what comes out
What you can record
400 mg in the evening, not just "took it". Standing doses per test, overrides per day.
Caffeine cutoffs, sleep schedules, daylight, walks — on the same scale as supplements.
How you slept, what you did, how the day felt against your usual.
Apple Watch and Oura sleep scores, HRV, steps — sent automatically, matched to what you changed.
Your annual check-up, compared with published reference ranges and tracked year over year. A comparison, never a diagnosis.
Travel, a cold, a night shift — the context that explains a bad week.
What you get back
Days you took it vs days you didn't, in your own numbers and your own words. A visible difference, no visible change, or not enough data yet.
What you take, what you're testing, and the differences visible in your records — in every conversation, with any assistant.
Consent once and a professional sees your stack and reads in their own workspace. Stop any time.
For professionals
Trainers, dietitians and pharmacies get a workspace: clients log in 10 seconds a day on their free account, you see their stack, doses, reads and a weekly summary — only what each client consented to share. Free for up to 3 clients.
See plans →The rules we keep
Nothing here diagnoses, treats or prevents anything. Reference ranges are published ones; verdicts summarise published research.
A read is a pattern in your records, not proof of cause. We say so on every screen and in every answer your AI gives.
Private by default. Export everything as JSON, delete by source, or delete your account — any time, from Settings.
Prescriptions are never recorded. Health-check values are stored only with your explicit consent and shared only when you turn it on.
The record grows with every conversation, every tap, every night your device measures — and the read gets clearer.