For iPhone + Apple Watch

Your body warns you before a migraine. Now you'll notice.

Migraine Sentry reads the signals your Apple Watch and iPhone already collect, learns your patterns, and gives you a clear vulnerability forecast each morning, so you can act early.Your Apple Watch signals, learned. A clear vulnerability forecast each morning.

App Store See how it works
9:41
Today
Today's forecast Moderate
Ease into today.
A short night and a falling barometer have nudged your vulnerability up a little.
Drink water through the day
Aim for an earlier night tonight
Based on 2 overnight readings 9 days since your last migraine
HRV
29ms
Resting HR
53bpm
40+
health signals read passively
3
logged migraines to your first forecast
0
accounts, logins or cloud uploads

How it works

From your first tap to your morning forecast.

1

Log in one tap

When a migraine starts, press the + once. That single tap is all Migraine Sentry asks of you in the moment.

2

We watch quietly

Your Apple Watch already tracks HRV, sleep and heart rate. Migraine Sentry simply reads what's already there.

3

A 30-second check-in

A quick tap on caffeine, hydration and stress: the everyday things your Apple Watch can't see. It sharpens your patterns.

4

Patterns emerge

Your first insights and forecast appear after 3 logged migraines. Ranked triggers surface, and the picture sharpens by your fifth.

5

Your morning forecast

Each morning Migraine Sentry shows your vulnerability for the day, then sends quiet live signals if things shift.

9:41
Today
Today's forecast Moderate
Ease into today.
A short night and a falling barometer have nudged your vulnerability up a little.
Drink water through the day
Aim for an earlier night tonight
Based on 2 overnight readings 9 days since your last migraine
HRV
29ms
Resting HR
53bpm

01 · Daily forecast

Wake up knowing your vulnerability

Every morning, Migraine Sentry reads your overnight sleep quality, HRV, resting heart rate, barometric pressure and weather, then gives you a Low, Moderate or Elevated vulnerability level for the day. It's a heads-up, not a prediction.

  • Built from your personal patterns, not generic advice
  • Concrete actions like "aim for an earlier night", not just a level
  • Sharpens with every migraine you log

02 · Your triggers

See what's really linked to your migraines

Migraine Sentry compares the 48 hours before each migraine to your normal baseline. Your first ranked triggers appear at 3 logged migraines, from short sleep to weather fronts to caffeine timing, grouped by how strongly each is linked and sharpening with every log.

  • 40+ signals considered automatically
  • Compound patterns detected (e.g. short sleep + low HRV together)
  • Grouped into strong and moderate links, not false certainty
9:41
Insights
Overview Triggers Patterns Treatment
Your triggers
Ranked by how often each precedes an attack
Strong link3
High stress0.85
Present before 21 of 25 migraines
Poor sleep0.82
Present before 21 of 25 migraines
Pressure drop0.79
Present before 20 of 25 migraines
Moderate link3
Low deep sleep0.66
Present before 17 of 25 migraines
Today · live
Ease into today. Moderate
2 signals since this morning
Pressure still dropping12m
Hydrate — protect sleep tonight.
Stress still winding down1h
Ease back gently — keep some light activity.

03 · Live signals

A nudge when it matters, not all day

During the day, if a signal crosses your personal threshold (barometric pressure dropping, activity too low, entering your perimenstrual window), Migraine Sentry sends a gentle nudge with one concrete action. One per signal, maximum. No notification fatigue.

One nudge per signal, max; each carries a specific action, and all are silenced during an active migraine.

04 · What we've learned

Your patterns, written in plain language

Migraine Sentry turns your data into a short, readable brief: one clear takeaway at a time, backed by the numbers behind it. No dashboards to decode. Just what changed, what it means, and what to watch.

One hero takeaway per section, every claim shown with the figures behind it, updated quietly as your picture sharpens.

What we've learned so far

Stress and body temperature shifts come before most of your migraines.

  • Stress-relaxation transition is your strongest signal, appearing before 9 of 12 attacks — and rarely on your normal days.
  • Body temp shift · 7/12 attacks.
  • Your attacks are down this month, 2 so far vs 5 by this point in June.
Based on 12 logged migraines · updated this morning
Migraine Sentry
Migraine Report
1 Jan – 28 Jun 2026 · 179 daysGenerated 28 Jun 2026
Patient: Jane Doe · DOB 15 Mar 1988 · 38y · Prepared for Dr. Sarah Chen
47
Attacks logged
68 headache days · 11.4/mo
14.2h
Avg duration
per attack
Mod.
Avg severity
weighted, 47 attacks
64%
Med. helped
of 76 treated
Medication-use watch (MOH)
Acute medication used on 38 of 179 days — 6.4 days/month, tracked against the 10-day/month threshold for medication-overuse headache.
Triptans + simple analgesics combined · ICHD-3 8.2 reference
ClassificationEpisodic
Disability assessmentValidated instruments
11
MIDAS
Grade III · Moderate
14 of 16 migraine weeks captured
3-month recall
58
HIT-6
Substantial impact (56–59)
6-item test, done at export
4-week recall
Informational wellness report — not a medical diagnosis.Page 1 of 6

05 · For your doctor

Walk into your appointment with answers

Generate a clinical-grade PDF on your device: trigger rankings, MIDAS and HIT-6 disability scores, medication-effectiveness analysis, and pre-migraine patterns. Your neurologist gets structured data; you get a better conversation.

  • MIDAS & HIT-6 validated clinical instruments built in
  • Medication-overuse (MOH) flag per ICHD-3 guidelines
  • Structured report: summary, patterns, treatment, triggers, health context, attack log

06 · On your wrist

Your wrist, one tap away

Log the moment a migraine starts straight from your Apple Watch: one tap, the time is noted, and it syncs to iPhone instantly, where the app does the thinking, quietly and on device.

Start and end attacks from your wrist; the attack timer stays in sync with your iPhone.

9:41
Today's forecast
Moderate
A few signals stacking up.
Log a migraine
10:04
Migraine in progress
1:23:06
Started 8:41 am
End migraine

40+ signals, watched day and night

HRVResting heart rateHeart rateWrist temperatureStress let-downRespiratory rateBlood oxygenSleep durationDeep sleepREM sleepCore sleepAwake timeSleep efficiencySleep regularityBarometric pressurePressure dropsTemperatureHumidityUV indexWind speedCloud coverNoise exposureDaylight timeStepsActive energyExercise minutesStand hoursWorkoutsWalking speedWalking steadinessWalking asymmetryMenstrual flowCycle phasePerimenstrual windowCaffeineAlcoholWaterStress levelSkipped mealsMedication response

On-device intelligence

Intelligence that learns you. And never leaves your pocket.

Migraine Sentry's intelligence runs entirely on your iPhone. It builds a picture of your normal, weighs the signals that matter for you, and turns them into a forecast you can act on. No account, no server, not a single upload.

  • 1

    Learns your baseline

    After about a week, it knows your normal HRV, sleep and rhythms, so it reacts to your shifts, not population averages.

  • 2

    Weighs 40+ signals

    Every signal is scored for how much it matters to your migraines, and how they combine.

  • 3

    Forecasts vulnerability

    Each morning it translates all of that into a Low, Moderate or Elevated level, with a reason and an action.

  • 4

    Stays on your device

    Your data and every calculation live on your phone. Nothing about you is uploaded; the only thing that ever leaves your phone is an approximate location to fetch the weather.

On your iPhone
Signals in
40+ health signals
HRVSleepPressureWeatherCycleActivity+34 more
Your baseline
What's normal for you
Forecast out
Today's vulnerability
Moderate
  • All analysis runs on your device
  • No account or sign-in required
  • We never see your health data
  • Never sold or shared with third parties

Backed by research

Migraines aren't random. Your body shifts first.

Research links measurable changes in heart rate variability, sleep architecture and barometric pressure to the hours before a migraine. Most people can't see them. Migraine Sentry watches for them.

The prodrome window

In the 24–48 hours before a migraine, the autonomic nervous system tends to shift: HRV dips, sleep fragments, resting heart rate drifts, and dozens of subtler signals move with them. Migraine Sentry listens during that window so you don't have to.

−48h−24hOnset
A typical HRV decline in the days before an attack

Why diaries miss it

A diaryasks you.

It captures what you remember, once a day, after the fact. The HRV slide at 3am, the pressure that fell over lunch, the third short night in a row. Memory keeps almost none of it.

A sentrywatches.

It doesn't ask. It watches around the clock, while you sleep, work, and forget it's there, checking every shift against your pattern as it happens.

Personal, not generic

"Avoid stress and chocolate" is generic advice. The app's on-device intelligence learns your combination of signals: the pattern that tends to precede your attacks.

Tuned to your history, not population averages

Five signal families with the deepest published evidence: a sample of the 40+ signals the app watches.

HRV

Studies report heart rate variability declining in the 24–48 hours before onset, one of the most-studied wearable signals in migraine research.

Peer-reviewed studies
Sleep

Research links disrupted sleep (fragmentation, not just short duration) with next-day migraine in many people.

Systematic reviews
Pressure

Reviews describe an association between falling barometric pressure and migraine onset, though sensitivity varies by person.

Review of multiple studies
Stress let-down

Research describes migraines rising in the hours after stress declines: the transition down, not the stress itself.

Published research
Menstrual cycle

Many people who menstruate report a menstrual association, with the perimenstrual window described as higher-risk.

Headache research

Research describes population-level associations. Migraine Sentry surfaces patterns in your own data; it does not diagnose, and findings are not medical claims.

Built for you

Whether it's 2 a month or 20

01

The episodic sufferer

You get migraines a few times a month and have tried tracking triggers without finding a pattern. Migraine Sentry watches the signals you can't. After a few logged attacks, it shows you what your body already knew.

02

The chronic warrior

15+ headache days a month. Your neurologist needs data and you're tired of forms. Migraine Sentry collects passively, generates clinical reports with MIDAS and HIT-6, and hands your doctor the structured data they need.

03

The cycle tracker

You suspect your migraines are hormonal. Migraine Sentry tracks your menstrual cycle alongside your health data, looks for perimenstrual clustering, and can flag catamenial patterns worth raising with your doctor.

Pricing

Free to start. Pay when it proves itself.

Migraine Sentry doesn't rush you into a trial. It waits until it has enough data to show you real patterns, then lets you unlock Premium.

FreeForever
Free

A complete migraine diary, yours to keep forever.

  • All migraine & symptom logging, on iPhone and Apple Watch
  • Daily & weekly check-ins
  • Passive health & weather tracking, with your personal baseline
  • Full history: timeline & calendar
  • Your daily forecast level: Low, Moderate or Elevated
  • Your headline insights & what we've learned so far
  • Doctor-ready PDF report & data export
Download free
Recommended
Premium
$24.99/year

or $3.99/month. Free for 21 days once your forecast is ready; no card required.

  • Everything in Free, plus:
  • Why today looks the way it does: the signals driving your forecast, and what to do
  • Live signal nudges through the day
  • Your personal trigger ranking & correlations
  • Pattern detection: time-of-day, day-of-week, cycle phase, trends
  • Treatment insights & compound-trigger detection
  • Deeper clinical-report analysis (trigger table, pre-attack changes)
Get Migraine Sentry

No account. No credit card to start. Cancel anytime.

FAQ

Common questions

Do I need an Apple Watch?
No, but it's strongly recommended. Without an Apple Watch, Migraine Sentry still tracks barometric pressure, weather, and everything you log manually. With one, it adds HRV, sleep stages, resting heart rate, blood oxygen, temperature and activity: the signals research links most closely to migraine.
How is this different from other migraine apps?
Most migraine apps are digital diaries: you log everything manually. Migraine Sentry reads 40+ health signals passively from your Apple Watch and iPhone sensors, then uses on-device intelligence to surface patterns you'd struggle to spot yourself. It watches the signals a diary can't: the HRV drop at 3am, the overnight pressure fall.
How long before I see useful insights?
Basic health metrics show immediately. After about 7 days, your personal baseline activates. Your first insights and forecast appear at 3 logged migraines, and the picture sharpens by your fifth, improving from there as you keep logging.
What if I forget to end a migraine?
End it whenever you remember. If a migraine has been running a few hours, the end screen asks when it actually ended, and you can also adjust the end time later from the migraine’s page in History. Migraine Sentry re-reads the health data for the corrected window, so your patterns stay accurate.
Does it predict my migraines?
It forecasts, rather than predicts. Each morning you get a vulnerability level of Low, Moderate or Elevated, built from the patterns that have preceded your own attacks. Treat it like a weather forecast: an Elevated morning is your cue to hydrate, protect your routine and keep medication close, not a verdict that an attack is coming.
Is this a medical device?
No. Migraine Sentry is an informational wellness tool, not a medical device. It does not diagnose, treat, or prevent any condition. The clinical reports and disability scores (MIDAS, HIT-6) are validated instruments that support better conversations with your doctor; they are not a substitute for medical advice.
What about Android?
Migraine Sentry is iPhone and Apple Watch only right now. The deep Apple Watch health integration is core to how it works. Android is under consideration for the future.
Can I export my data?
Yes. Any time, all generated on your device. The free report gives your doctor the clinical core: your full attack log, disability scores (MIDAS, HIT-6), and symptom and medication summaries. Premium adds the deeper analysis: your trigger ranking, compound triggers and pre-attack changes.
What happens if I stop paying for Premium?
Your data stays on your device; nothing is deleted. You keep logging, your health metrics, full history, your daily forecast level and your doctor-ready report. The Premium intelligence layer pauses until you resubscribe: the forecast reasons, live nudges, trigger ranking and pattern detection.
How much does it cost?
Migraine Sentry is free to download and free to keep using as a full migraine diary: logging, history, your daily forecast level and a doctor-ready report. Premium ($24.99/year or $3.99/month) unlocks the intelligence layer: why your forecast looks the way it does, live nudges, your trigger ranking and deeper insights. It's free for 21 days once your forecast is ready; no card required.

More in the Help Center

Start understanding your migraines

Free to download. Works with or without an Apple Watch. Your data never leaves your phone.

App Store

iPhone & Apple Watch · iOS 17 or later