Living with High Blood Pressure

High Blood Pressure: Readings and Doctor Report in One Place

Take care of your blood pressure.

Sam keeps your blood pressure readings, sleep and activity in one place. You take the history to your next appointment.

  • Not a medical device
  • Works with Apple Watch, Oura, Whoop & Garmin
  • Built in Europe

What happens in the arteries with high blood pressure

Step by step: where blood pressure builds, how it rises with each heartbeat, what changes with high blood pressure and why it is measured rather than felt. The model shows the heart and the large arteries without the veins.

  1. 1The arteries

    Heart and arteries

    Where high blood pressure plays out

    Blood pressure is the force of blood on the artery walls. The heart pumps blood into the aorta, whose branches carry it to the head, arms and legs.

    Aorta / Heart / Leg arteries

    A human figure, seen from the front at an angle. The heart's lower chambers and the arteries turn rose, from the aorta above the heart out to the neck, the arms and the thighs. The heart beats at a calm resting pace.

  2. 2Without high blood pressure

    Blood pressure

    Pressure with every heartbeat

    With each heartbeat, the pressure in the arteries rises and a pulse wave runs along them. The first number is the pressure during a beat, the second between beats.

    Pulse wave

    Closer view of the chest, the abdomen and the left upper arm. With each heartbeat a white band leaves the start of the aorta and runs along the arteries towards the neck, the arms and the legs.

  3. 3With high blood pressure

    High blood pressure

    When the pressure stays high

    In high blood pressure, the pressure in the arteries stays raised. European and German guidelines speak of high blood pressure from 140/90 mmHg at the doctor's office, once a further measurement confirms it.

    Raised pressure / Pulse wave

    Same view, slightly closer. The arteries turn a deeper, muted rose that stands for the raised pressure. The heart keeps its pace, and with each beat a band in the deeper rose still runs along the arteries. Nothing in the vessels changes shape.

  4. 4Where it is measured

    Day to day

    Measured, not felt

    Most people with high blood pressure feel no symptoms. Only a measurement shows it, with a cuff on the upper arm, at the doctor's office or at home.

    Worth discussing with your doctor.

    Upper arm, where the cuff sits

    The view pulls back to the figure from the head to the thighs. Heart and arteries return to a neutral grey, the band stops, and a soft rose area marks the left upper arm, where a blood pressure cuff is placed. The heart keeps beating calmly.

Sources concern the condition
  1. [1] OpenStax; Betts JG, Young KA, Wise JA, et al.. Anatomy and Physiology 2e, sections 20.2 Blood Flow, Blood Pressure, and Resistance and 20.5 Circulatory Pathways. 2022. OpenStax, Rice University. https://openstax.org/books/anatomy-and-physiology-2e/pages/20-2-blood-flow-blood-pressure-and-resistance
  2. [2] Reference Values for Arterial Stiffness' Collaboration. Determinants of pulse wave velocity in healthy people and in the presence of cardiovascular risk factors: 'establishing normal and reference values'. 2010. European Heart Journal 31(19):2338-2350. https://doi.org/10.1093/eurheartj/ehq165
  3. [3] World Health Organization (WHO). Hypertension, fact sheet (updated 25 September 2025). 2025. who.int. https://www.who.int/news-room/fact-sheets/detail/hypertension
  4. [4] Bundesministerium für Gesundheit, in Zusammenarbeit mit dem Institut für Qualität und Wirtschaftlichkeit im Gesundheitswesen (IQWiG). Bluthochdruck: Ursachen und Behandlung (Stand 05.03.2026). 2026. gesund.bund.de. https://gesund.bund.de/bluthochdruck
  5. [5] European Society of Cardiology (ESC); McEvoy JW, McCarthy CP, Bruno RM, et al.. 2024 ESC Guidelines for the management of elevated blood pressure and hypertension. 2024. European Heart Journal 45(38):3912-4018. https://doi.org/10.1093/eurheartj/ehae178
  6. [6] Bundesärztekammer, Kassenärztliche Bundesvereinigung, AWMF. Nationale VersorgungsLeitlinie Hypertonie, Langfassung, Version 1.0. 2023. register.awmf.org (AWMF-Register-Nr. nvl-009). https://register.awmf.org/de/leitlinien/detail/nvl-009

Own simplified illustration based on the sources above.

The model shows the heart's lower chambers, the aorta and its main branches to the neck, arms and legs, and for orientation the atria. Veins, lungs, heart valves, the arteries of the head and of the abdominal organs, and smaller arteries are not in the model. Colour stands for pressure, the deeper rose for raised pressure, and the pulse wave runs several times slower than in the body. The soft area on the upper arm marks where the cuff sits. Changes that long-standing high blood pressure can cause in the heart muscle and the artery walls are not shown. Adult male reference model; close-ups are not to scale.

3D anatomy: BodyParts3D, (c) The Database Center for Life Science, CC BY 4.0. Prepared via human-atlas; simplified, cropped, coloured and animated by SanoLabs.

What Sam keeps for you

No watch sees inside the arteries. What your cuff measures, Sam keeps.

For people living with high blood pressure who want a record for their appointments. Sam is not a medical device. It keeps your cuff readings and what you and your wearable already produce in one place.

How the High Blood Pressure Medical Program works.

Daily values next to your readings

Next to your readings Sam shows sleep, resting heart rate, workout days, steps, weight, stress level and the alcohol days you log. Each value sits next to your own earlier values.

SleepResting Heart RateExerciseStepsWeightStress LevelAlcohol Days

Dose reminders, on schedule

Sam reminds you of your blood pressure medication at the times you set, and you check off each dose. Your intake shows in the report for your doctor. Which medicines you take, and when, is for your doctor to decide.

Reminders at your dose timesDoses checked off

A reading log built for two numbers

You log each reading: systolic and diastolic, pulse, arm, whether you sat rested for 5 minutes and whether you measured at home or at a doctor's practice. You can tag circumstances such as alcohol or stress. Sam also imports blood pressure readings from Apple Health, up to 180 days back. Sam does not estimate a value from your wrist, camera or fingertip.

Systolic and diastolic readingsPulse at each readingAt home or at the doctor's officeMeasured at rest

A monthly diet check-in

Once a month, Sam asks the MEDAS-14: 14 questions on a Mediterranean diet, from the PREDIMED study. Your result runs from 0 to 14. The questionnaire looks at diet only. You keep track of your medication and your readings elsewhere in Sam.

MEDAS-14 diet check-inPDF report

At 180 systolic or 120 diastolic or higher, the app shows a notice as you log the reading, saying when to call emergency services and when to contact a doctor the same day. It is never a diagnosis. If your latest office reading differs from your home average over the seven days up to your latest home reading by 15 mmHg or more (systolic), the PDF report lists that as a point to discuss with your doctor - also never a diagnosis.

All of it can go into one doctor report as a PDF for your appointment.

Every Medical Program has its own doctor report as a PDF. You choose the period it covers and can share the report.

Sam is a wellness companion, not a medical device. The app does not diagnose, treat, cure, or prevent any illness and does not replace medical advice. Consult a qualified healthcare professional for medical decisions.

Sam app screen for people living with High Blood Pressure

Blood pressure readings are outside what an Apple Watch can record. Sam keeps what your cuff measures, what you log and what your Watch produces.

Doctor report (PDF)

Your readings as a doctor report to take along

Sam puts your reading log together as a PDF for your doctor's office. You choose the period the visit should cover: 1, 3, 6 or 12 months, or the whole record.

  • Your home-reading average over the last 7 days, split into morning and evening, with the number of readings behind it.
  • Your intake: how many scheduled doses you checked off, plus the last 30 days at a glance.
  • Sleep, resting heart rate and steps from Apple Health plus stress level, each as an average of the last 90 days, along with your latest weight and the alcohol days you reported. Each value shows how many days it covers.
  • Your individual readings with date, time and pulse, noting whether you measured in the morning, in the evening or at a doctor's office (the latest 30).

Doctor report: blood pressure

Sample view

Report covers

1 month3 months6 months12 monthsWhole record

At a glance

131/82

Home readings, average of the last 7 days (mmHg)

128/80

Morning (mmHg)

134/84

Evening (mmHg)

26 of 28

Scheduled doses taken

Measuring days per month

The current month is not included.

Medication taken, last 30 days

Dose taken

Measured values over the same period

Measuring days per week, last 4 weeks
5, 6, 4, 6
Sleep, nightly average
7 h 05 (24 days of data)
Resting heart rate, average
63 bpm (26 days of data)
Steps, daily average
7,400 (27 days of data)

Diary

  • 14 May, 07:40

    131/82 mmHg - morning - 68 bpm

  • 13 May, 19:15

    134/84 mmHg - evening - 71 bpm

Self-tracked data, not a diagnosis.

Example values, not real data. Your report is based on your own entries.

Ask about your numbers. Take the report along.

Sam shows your values next to your entries. What they mean is something to talk through with your doctor.

Ask Sam about your data

You ask a question, Sam answers with your own numbers. For example:

How has my resting heart rate trended this month?
Your resting heart rate averaged 64 bpm this week - 2 bpm below your 21-day baseline.
And how does my sleep compare?

Your monthly report as a PDF

The monthly report sums up your weeks - for appointments, applications, or simply your own record.

Monthly Report - June

Your Health Overview

Resting heart rate

64Avg (bpm)
-2vs. baseline
30Days logged

Activity

7.4kSteps/day
18Days on target
+12%vs. last month
Created by Sam HealthPDF

Example values. Your report is based on your own data.

Articles about High Blood Pressure

Further reading: what wearable data can show about everyday life with High Blood Pressure - and where its limits are.

Frequently Asked Questions

Can a smartwatch measure my blood pressure?+

The Apple Watch and most wearables can't measure blood pressure. Reliable readings still come from a cuff - at home or at your doctor's office. Sam doesn't replace that measurement; it complements it with trends in activity, sleep, and resting heart rate.

So what does Sam do when you live with high blood pressure?+

Sam has a program for people whose doctor has diagnosed high blood pressure. You keep the readings from your cuff. Next to them Sam shows sleep, resting heart rate, steps, weight, alcohol days and stress level against your own earlier values. You also get a reminder for your medication and a PDF report for your doctor visit.

What does the hypertension notification on my Apple Watch mean?+

The watch analyzes 30 days of data from its optical heart sensor. If a pattern fits high blood pressure, it shows 'Possible Hypertension'. An Apple Watch does not measure blood pressure, and the notification is not a diagnosis. Apple advises 7 days of cuff readings and a talk with your doctor. No notification does not mean you have no hypertension.

Which Apple Watch has hypertension notifications, and does the Series 12 have them?+

You need an Apple Watch Series 9 or newer, or an Ultra 2 or newer. The SE does not have it. On Series 12 and Ultra 4, Apple says it might be unavailable in your region while clearances are pending. Check Apple's availability page. You must be 22 or older, not pregnant, with no hypertension diagnosis. As of October 2026.

Do I need Sam if the Health app has a blood pressure log?+

Not necessarily. Apple's Blood Pressure Log covers a fixed period: 7 days of morning and evening readings, or 4 weeks of daily ones. At the end you export a PDF. Sam's program is for people with doctor-diagnosed high blood pressure. It keeps your readings ongoing, reminds you of your medication, shows daily values beside them and exports its own PDF.

Can I keep a blood pressure diary in Sam?+

Yes, in the high blood pressure program. It is for people whose doctor has diagnosed high blood pressure, and you confirm that at the start. You log each reading: upper and lower value, pulse, time, at home or at the practice. Or Sam imports readings from Apple Health, up to 180 days back. Sam does not measure blood pressure itself.

Does Sam diagnose or treat high blood pressure?+

No. Sam is a wellness companion, not a medical device. Diagnosis and treatment belong in the hands of a doctor - Sam just helps you walk into those conversations better informed.

How would I even know if I have high blood pressure?+

In most cases, you wouldn't feel anything at all. Heart foundations explicitly point out that high blood pressure usually causes no noticeable symptoms for long stretches of time - which is exactly why it's often caught late. The only reliable way to detect high blood pressure is a cuff-based reading, not how you feel.

What can I do for my blood pressure day to day?+

According to the European medical societies (ESC/ESH), regular physical activity and mindful alcohol consumption are among the recommended non-drug measures for high blood pressure, and getting enough sleep is linked to better cardiovascular numbers. Whether and which medications make sense is a decision you make together with your doctor.

I'm already on blood pressure medication - is an app like Sam still useful for me?+

Sam doesn't replace your medication. It shows how your activity, sleep, and resting heart rate develop alongside your treatment, and you can talk through everyday changes with your care team. Whether and how your medication gets adjusted remains a decision made solely by your doctor.

Does Sam replace my blood pressure log?+

Not directly. Sam does not measure your blood pressure, so you still need your cuff. In the high blood pressure program you enter readings yourself or import them from Apple Health. Next to them Sam shows resting heart rate, sleep, steps and other daily values, and you export a PDF report for your next check-up.

Understand what your body is telling you.

Download Sam for free, connect Apple Health, and see what your data says about everyday life with High Blood Pressure - compared to your own baseline.

Free for iPhoneBuilt in Europe
Sam dashboard with wellbeing score, heart rate and sleep

Sam is a wellness companion, not a medical device. Sam does not diagnose, treat, cure, or prevent any illness and does not replace medical advice. For health questions or concerns, always consult a qualified medical professional.