AI health companion · phone & watch
Photograph the plate and you get an honest estimate in seconds. That part is table stakes. What Eira does next is keep the thread — week after week, until it can tell you something about yourself that no first-week app could know.
You sleep worse on the nights you eat after 8pm — 14 times since March.
Eira is finishing up. Leave your email and we'll tell you the day it opens — one message, and then only Eira news you asked for.
Getting it in
Fifteen minutes a day of data entry is why people quit tracking. The bar here isn't laboratory precision — it's beating your own guess, in under ten seconds, without making you feel audited.
One photo of the plate. Eira names the dishes, estimates the portions, and hands you something you can correct with a tap — not a form to fill in.
“Two eggs, sourdough, black coffee.” Understood on your device, so nothing leaves the phone to be transcribed. From your wrist too.
Barcode or nutrition label. If the product isn't in any database, teach Eira once — it's yours from then on, and it stays yours.
Chicken thigh, roast potatoes and a green salad. Eira assumed the potatoes were tossed in oil.
Honesty, as a feature
The model's job is to recognise the food. Every calorie and gram comes from a nutrition database — never from a language model's imagination. Where the reading is genuinely uncertain you get a range, not a decimal point pretending to be a measurement.
A range means a range. “520–680 kcal” is what Eira actually knows. A scanned barcode reads exact, because it is.
Your corrections teach it. Fix a portion and Eira adjusts its guess about your plates — “your homemade portions run about 20% larger than my first guess.”
No red screens. Going past a goal is information. The bar keeps going and gets quieter — there is no “over budget” colour anywhere in the app, on purpose.
What Eira remembers
Other assistants forget you between sessions. Eira keeps an effective-dated record of what it has learned — preferences, patterns, the things you told it once — and it compounds. The pattern it spots in week six is not something a first-week app can show you.
All of it lives on one screen, in your own words. Edit a fact. Delete a fact. Ask where it came from. Nothing is inferred behind your back, and an allergy is never quietly assumed — Eira asks.
Ask Eira about your history
“How often did I actually hit protein in the weeks I was travelling?”
Answered from your own log, in plain language, with the days it counted.
You sleep worse on the nights you eat after 8pm — 14 times since March.
Learned from your diary · since March 2026
Prefers oat milk in coffee
Learned from your conversations · since March 2026
Allergic to walnuts
You told Eira this · since May 2026
You may have stopped eating dairy
Learned from your conversations · since July 2026 · Eira's fairly sure
This changes what Eira suggests, so it asks rather than assumes.
The daily note
Once a day Eira writes you one short entry: something it noticed, and one thing worth trying. It is composed from your own logs and your sleep and activity — not generated to fill a notification slot.
And if you want to talk it through, you can. Supportive, never moralising. No verdicts on a birthday dinner, no zero-parade after a week away — just “welcome back, start from today?”
Eira offers wellness guidance, not medical advice.
Tuesday, 14 March
Three good protein days in a row, and the first one that didn't need a shake to get there.
The Tuesday pattern is holding: you eat earlier on the days you train in the morning, and you slept about forty minutes longer on each of them. Nothing to change — worth noticing. If tomorrow runs late again, the airport chicken salad worked last time.
Is it bad that I had two dinners out this week?
No — food isn't a moral category. Both evenings landed around 2,300 kcal, which is a normal week for you, and your protein still averaged 118 g. If you want the weekend to feel easier, the thing that has actually worked before is a bigger lunch on the days you're eating out.
However you eat
Eira is a nutrition adequacy companion, not a calorie police force. Which means the same app works whether you're cutting, lifting, fasting, low-carb, or eating on a GLP-1 — and it changes what it leads with, not just what it labels.
Losing weight
Your calorie target adjusts to what your body is actually doing week to week, floored so it never suggests something unsafe. Eira proposes; you decide. It never moves your goal behind your back.
Training & lifting
HealthKit read and write, so your food sits beside your rings, your sleep and your workouts. Log from the wrist mid-session. Micronutrients too — pin the one you care about to the top of the day.
Fasting
16:8, 18:6, 20:4 or your own. One ring of time, a start you can correct when you forget to tap, and no streaks to break. Stopping early is a decision, not a failure.
Keto & low-carb
Turn it on and net carbs sits directly under carbs, on the day and in the diary, worked out once on the server so the figure you see is the figure your history is queried against.
On a GLP-1
When appetite is suppressed, “calories left” is the wrong headline. Eira leads with protein against a daily minimum, plus fluid and fibre, and the coaching turns to getting enough. Follow your prescribing clinician — Eira never touches medication.
Or none of the above
If figures are the problem, put them away. Eira keeps logging and keeps noticing, and says it in words instead — with the exact number one tap behind, whenever you want it.
Eating window
Four hours and thirty-eight minutes until your window opens.
No fat-burning stages, no autophagy meter, no “you broke your fast”. Timed eating isn't right for everyone, and Eira says so before you start.
Apple Watch, widgets, Siri
Raise your wrist, say what you ate, drop your arm. The watch never waits on a spinner — it paints today from what it already has, queues what you logged, and syncs when it can. One tap for water. A complication with the figure you actually check.
“A flat white and two oatcakes.”
Home screen
Remaining
540 kcal
A widget with the figure you check, and an interactive water tile that logs a serving without opening anything.
Siri & Action Button
“Siri, log my water.”
Real App Intents for the things you do every day — logged before you've unlocked the phone.
Trust
This category has a bad record: a breach of millions of rows here, a billing scandal there. Eira is built to be the boring, honest one.
Your data lives in a single encrypted database we operate — not scattered across a dozen third-party services that each keep a copy.
Nothing read from Apple Health reaches analytics, advertising, or a log line. That's a hard rule in the code, not a promise in a policy.
A full export of everything, from inside the app. Deletion is deletion — account and record, in one place, without emailing anyone.
No countdowns, no fake discounts, no weekly rate dressed up as a monthly one, no second paywall when you decline.
Plans
This is what it will cost when Eira opens, written down now so nothing about it is a surprise later. Use the whole product for a week — the memory, the coach, the history questions — with no card and nothing to cancel. If you don't subscribe, you keep a free Lite account, and every meal you logged stays readable, editable and exportable. Forever.
$59.99 a year
About $0.16 a day.
Free for 7 days — no payment due now. We'll remind you before the first charge. Cancel any time before it ends and you pay nothing.
Reserve your place$9.99 a month
Same product, more flexibility.
Free for 7 days — no payment due now. Then $9.99 a month. Cancel any time.
Reserve your placeFree
What you keep if you don't subscribe.
Paused, not deleted. Subscribe again and the memory picks up exactly where it left off.
Plans renew automatically until you cancel, in your Apple Account settings. Prices shown in USD; the App Store charges in your own currency. Your diary and everything Eira remembers stay yours either way. See Terms and Privacy.
Questions
Soon — and we would rather say that than name a date we might miss. Eira is in the last stretch before submission to the App Store, and review takes as long as it takes. Leave your email and you'll hear from us the morning it's live; that is the only thing we'll use it for unless you ask for more.
We store your name, your address and the date you agreed, and nothing else. It is never sold, never shared, and never handed to an advertiser. You'll get one note asking you to confirm the address, one when Eira goes live, and after that only what you ticked the box for. Unsubscribing removes the record entirely — see the privacy policy.
Better than your own guess, which is the bar that matters — human self-report is off by around half. Eira shows a range rather than a false decimal, and it gets better at your plates every time you correct one. It is an estimate, and it never claims to be a measurement.
No. The phone app is the whole product. If you do wear one, the watch adds voice quick-log, one-tap water, complications and a glance — the wrist becomes an input, not just a second screen.
Nothing is taken away. You move to a free Lite account: the compounding features pause, and every meal, every fact and every note stays readable, editable and exportable. If you come back, the memory resumes from where it stopped.
It is designed with that in mind, and it is still not a treatment. There is no red “over budget” state, no shaming, no streak pressure, and gentle mode removes the figures entirely. Restriction advice is blocked outright, and the fasting timer asks you to talk to a clinician first if an eating disorder is part of your history. If food feels hard right now, please speak to a professional — Eira offers wellness guidance, not medical advice.
Only what a request needs, only with your explicit consent, and only to providers under no-training, no-retention terms. Nothing read from Apple Health goes to analytics or advertising at all. The full picture is in the privacy policy, written to be read.
At launch: iPhone, with a companion app for Apple Watch. Android and Android smartwatches are being built after that — the memory, the coach and your whole record live on the server, so an account you start on one moves across with everything intact. Join the list above and tell us if Android is the one you're waiting for.
Leave your name and email and we'll write to you once — the morning it goes live — with your seven free days waiting. After that you'll hear from us only if you said we could.
You're on the list
Check your inbox — there's a note asking you to confirm it's really you.
Once you've clicked it, that's the last you'll hear from us until Eira is live. If it hasn't arrived in a few minutes, look in spam, or write to hello@eira.coach and we'll sort it out.