If you've just started tracking your blood pressure or been doing it for a while, Welltory can give you a complete and accurate analysis of each reading. Note that you can't measure your blood pressure with Welltory — you'll need to use a blood pressure monitor.
We analyze your readings in accordance with the 2024 ESC/ESH Guidelines for the management of arterial hypertension and supplement them with additional indexes that give you a more complete picture of what’s happening with your cardiovascular system. We’ll also alert you when a reading looks alarming. However, any medical assessment or recommendations can only be given by your physician. Our interpretations cannot be considered a medical assessment or used as recommendations to start, change, or end any treatment.
If you enter your blood pressure regularly — automatically or by hand — you’ll be able to track trends on charts or in the blood pressure log (monthly blood pressure report), see what impacts your results, and help your doctor understand how well your treatment is working.
Please note that we will not send a blood pressure analysis if you have not entered your heart rate information or have entered the same data as last time.
A complete blood pressure analysis is available in the free version for the first three days. Go Premium for unlimited blood pressure analytics. A blood pressure log (monthly blood pressure report) is available only to Premium users.
Can I measure my blood pressure with Welltory?
No. Welltory and most other apps can not take blood pressure readings — you'll need to use a blood pressure monitor.
Most smart blood pressure monitors such as Qardio, Omron, iHealth, and Medisana can be connected to Welltory via Apple Health, Google Fit, Health Connect, or Samsung Health. Withings smart BP monitors, on the other hand, can directly share data with Welltory. Additionally, regular blood pressure monitors are also compatible — you can just enter your readings into the Welltory app manually.
How do I enter my blood pressure data in the Welltory app?
There are two options:
Manually.
Tap the plus sign in the upper right corner of the feed or open your Journal and tap the plus sign in the upper right corner. Scroll to the end of the screen that opens.
You’ll see a button to enter your blood pressure numbers in the lower-left corner.
Enter your top and bottom numbers.
Enter your heart rate if your monitor tracks it. Your heart rate data will help us calculate additional indexes and offer you an in-depth analysis of your cardiovascular system.
You can skip the heart rate field if you’ve been wearing your fitness tracker or measured your HRV within the last 30 minutes. Just make sure you’ve synced your tracker to Welltory directly or via Apple Health, Google Fit, Health Connect, or Samsung Health.
If you’ve just started tracking your blood pressure
Why track blood pressure in the first place?
Blood pressure is a key indicator of cardiovascular health. If it falls outside the norm, this may be a signal that your health could be at risk.
Arterial blood pressure is the force with which blood pushes against your blood vessels. If it’s too high, there is a lot of pressure on your arteries, and your body as a whole. If it’s too low, your internal organs may not be getting adequate blood supply. Tracking your blood pressure regularly can help reduce your risk of stroke, heart attack, kidney failure, and many other problems.
Usually, blood pressure comprises two numbers — 120/80, for example. The top number is your systolic pressure — the pressure in your arteries when your heart contracts. The bottom number is your diastolic pressure, which is the pressure in your arteries between beats.
At Welltory, blood pressure is analyzed from multiple perspectives, with the algorithm divided into several distinct modules.
Clinical opinion assesses your blood pressure according to the 2024 European guidelines. A green dot means your blood pressure is optimal, yellow indicates elevated levels, and red signals hypertension.
Aging opinion evaluates how well your heart and blood vessels are adapting to the aging process, and whether your circulation meets your body’s needs for your age.
Circulation opinion assesses your hemodynamic status based on the ratio of pulse pressure to systolic pressure — a key indicator of vascular condition and cardiovascular load. It reflects how well your blood pressure readings align and how much strain your circulatory system is under.
BP Score. A comprehensive evaluation based on your symptoms, circulation index, and the recommended ranges for systolic, diastolic, and pulse pressure for your age.
Two additional experimental indexes are also calculated based on big data analysis. These are special formulas designed to identify patterns in the body’s condition and parameters — both physiological (such as heart rate, blood pressure, age, and sex) and anthropometric (such as height and weight). The indexes are calculated when your pulse data is available, along with your blood pressure readings.
Cardiovascular Index assesses how fatigued your cardiovascular system is and how well it can cope with physical or physiological stress. It takes into account your pulse pressure and heart rate. This index is based on the classic Kvass index but has been refined by our researchers using big data analysis and newly identified correlations.
Possible values:
[-1, 7.5) — the index is unusually low, which may indicate an issue with the data.
[7.5, 15) — the index is within the normal range. You’re recovering but not fully ready for intense activity. It’s best to focus on rest or light exercise.
[15, 17) — you’re well-rested and ready to take on new challenges.
[17, 25) — your cardiovascular system is fatigued, and your resources are depleted. It’s time to slow down for a while.
[25, 32] — you’re at your limit, and your body is under significant strain. If possible, take a break.
Physical Conditions Index is a way to assess a person’s overall physical health. In addition to core metrics like blood pressure and heart rate, the evaluation also takes into account sex, age, and weight. A key advantage of this formula is its sensitivity to heart rate and blood pressure — it does not undervalue overall health in cases where the Body Mass Index (BMI) is elevated.
Possible values:
[-1.2, 0) — elevated risk of cardiovascular disease. If you consistently see low values, it’s best to consult a doctor.
[0, 0.4) — your cardiovascular system is not in optimal condition, and your risk of cardiovascular disease is increased.
[0.4, 0.5) — you’re in fair shape, with a moderate risk of cardiovascular issues.
[0.5, 0.7) — you’re in good physical shape, with a low cardiovascular risk.
[0.7, 1.4) — excellent physical condition. Your cardiovascular health is comparable to that of an athlete.
We also calculate several additional indicators that provide useful insights into the condition of your cardiovascular system.
Pulse Pressure is the difference between your systolic (upper) and diastolic (lower) blood pressure. For example, if your blood pressure is 120/80 mmHg, your pulse pressure is 120 – 80 = 40 mmHg. A normal pulse pressure typically ranges from 30 to 50 mmHg. Values below 30 or above 50 may indicate potential issues with your cardiovascular health.
What affects pulse pressure:
Vascular condition, particularly the elasticity of arterial walls. For example, atherosclerosis can reduce vessel flexibility.
Stroke volume, or the amount of blood the heart pumps in a single beat. An increased stroke volume can raise pulse pressure.
Overall blood pressure, whether high or low.
Heart health, including issues like heart valve disease.
What elevated pulse pressure (over 50 mmHg) may indicate:
Atherosclerosis.
Hypertension.
Increased arterial stiffness (common with aging).
Tachycardia or high cardiac output.
What low pulse pressure (under 30 mmHg) may indicate:
Weak cardiac output (e.g., in heart failure).
Reduced blood volume (hypovolemia).
Heart valve stenosis.
If your pulse pressure is outside the normal range, it’s a good idea to consult a doctor to rule out any serious conditions.
Mean Arterial Pressure (MAP) is a metric that reflects the average blood pressure in the arteries throughout one cardiac cycle. It’s used to assess organ perfusion — in other words, how effectively blood is being delivered to body tissues. A normal MAP typically ranges from 70 to 100 mmHg. A value below 60 mmHg may indicate insufficient perfusion of vital organs, which is especially critical in intensive care settings.
MAP helps assess how effectively blood is reaching internal organs. A MAP below normal can lead to ischemia (insufficient blood supply) to organs, while a MAP above normal can overload blood vessels and organs. MAP is also crucial in intensive care — it helps monitor the condition of patients with hypotension, hypertension, sepsis, or shock. Additionally, MAP is used to evaluate the effectiveness of treatments, such as the use of vasoconstrictors.
What deviations in MAP may indicate:
High MAP may be associated with hypertension, increased heart strain, and the risk of vascular damage.
Low MAP often signals shock, hypovolemia, heart failure, or significant vascular tone reduction.
MAP is an important indicator in cardiology and intensive care because it provides a more accurate reflection of the actual pressure in the arterial system than either systolic or diastolic pressure alone.
Heart Rate (HR) is the number of heartbeats per minute. It is an important indicator of cardiovascular health, helping to assess the functioning of the heart and overall health. Normal values differ between adults and athletes at rest. For a typical adult, the heart rate ranges from 60 to 100 beats per minute. Athletes may have a lower heart rate (e.g., 40 to 60 beats per minute) due to higher fitness levels. During physical exertion, the heart rate can increase, depending on the level of physical activity, age, and training.
HR in blood pressure reports reflects the regulation of pressure:
An increase in heart rate often leads to a rise in systolic pressure (the upper value).
A decrease in heart rate may reduce cardiac output, which can affect blood pressure levels.
In addition, heart rate helps assess the load on the heart:
A high heart rate with normal or high blood pressure may indicate increased strain on the heart.
A low heart rate with normal blood pressure may be normal, but when combined with hypotension, it may suggest a potential arrhythmia or heart rhythm disorder.
Stroke Volume is the amount of blood the heart pumps into the aorta with each contraction of the left ventricle. This metric reflects the efficiency of the heart’s function and is a key parameter for assessing the cardiovascular system.
The most accurate method for calculating Stroke Volume is echocardiography. At Welltory, this parameter is estimated based on an approximation. If you suspect heart issues and regularly notice extremely abnormal stroke volume values, it is advisable to consult a doctor.
In a healthy adult, stroke volume typically ranges from 60 to 120 ml per contraction at rest. The values can vary based on age, sex, physical fitness, and the overall condition of the cardiovascular system.
Factors influencing stroke volume:
Contractility of the heart. The stronger the heart muscle contracts, the more blood is ejected.
Preload. The volume of blood returning to the heart before contraction depends on venous return.
Afterload. The resistance the heart must overcome to eject blood into the vessels.
Heart rate. If the heart rate increases too much, the heart may not have enough time to fill, reducing stroke volume.
A decrease in stroke volume indicates reduced heart efficiency. Possible causes include heart failure, ischemia, hypovolemia, and heart valve disorders. An increase in stroke volume is often observed in trained athletes or as a compensatory mechanism, such as in myocardial hypertrophy.
Cardiac Output is the volume of blood the heart pumps through the circulatory system per minute. This metric reflects the overall efficiency of the heart’s function and the body’s ability to supply tissues with oxygen and nutrients.
The most accurate method for calculating cardiac output is echocardiography. At Welltory, this parameter is estimated based on an approximation. If you suspect heart issues and consistently observe extremely abnormal cardiac output values, it is advisable to consult a doctor.
Normal cardiac output values for a resting adult are 4–6 liters per minute. In trained athletes or during physical exertion, it can increase to 20–30 liters per minute.
Factors affecting cardiac output:
Heart rate (HR):
An increase in HR raises cardiac output if stroke volume remains stable.
However, if the HR becomes too high, stroke volume may decrease due to reduced ventricular filling time.
Stroke volume is influenced by:
Preload – the volume of blood returning to the heart.
Contractility – the strength of the heart’s contractions.
Afterload – the resistance the heart must overcome to pump blood.
The overall condition of the body: physical activity, fitness level, age, and medical conditions (e.g., heart failure) all play a role.
Increased cardiac output can occur with conditions like hyperkinetic syndrome, fever, hyperthyroidism, sepsis, and pregnancy — typically as a compensatory response to the body’s increased oxygen demand. Decreased cardiac output is commonly seen in heart failure, myocardial infarction, hypovolemia, or shock. When cardiac output drops, tissue perfusion becomes inadequate, which can lead to organ dysfunction.
SpO₂ is a measure of how much oxygen is bound to hemoglobin in the arterial blood. Within the context of a blood pressure report, it serves as an additional indicator of cardiovascular health and helps assess how effectively oxygen is being delivered to the body’s tissues.
SpO₂ values:
Normal: 95–100%
Mild hypoxemia: 90–94%
Severe hypoxemia: Below 90%
How SpO₂ relates to blood pressure:
Blood pressure and perfusion. Low arterial pressure (hypotension) can reduce tissue perfusion, even when oxygen saturation appears normal.
Hypoxia and blood pressure. When SpO₂ drops, tissues experience oxygen deprivation. This may trigger compensatory changes in blood pressure.
Oxygen saturation and hypertension. People with chronic hypertension may show lower SpO₂ levels, especially at night — for instance, due to obstructive sleep apnea. This can further impair blood pressure regulation.
Why mark how you’re feeling and note symptoms?
Tracking how you feel is important for several reasons:
To connect symptoms with your blood pressure readings. Your pressure, pulse, or SpO₂ might be in the normal range, but how you feel can reveal hidden issues.
To spot trends and triggers. For example, you might notice a rise in pressure after stress, caffeine, or poor sleep — or a drop in the morning or after exercise.
To clarify your condition. Sometimes, your readings don’t call for a doctor visit, yet it’s still important to monitor how you’re doing.
To help your doctor understand the full picture. If you do consult a doctor, your symptom notes can make it easier for them to assess your situation.
To log how you feel in Welltory, just tap one of the icons below your blood pressure data.
Then, tell us more about how you’re feeling.
What kind of blood pressure is considered normal?
According to ESC/ESH, if you only take into account systolic and diastolic numbers, then everything over 90/60 and below 120/70 is considered within the norm. The lower end of this range is situational and depends on the combination of your top and bottom numbers, though.
The same guidelines and other research (e.g., Clinical Methods: The History, Physical, and Laboratory Examinations) recommend to supplement top and bottom reading with two other numbers when analyzing blood pressure:
Mean arterial blood pressure (MABP) — the average blood pressure in your arteries in a cardiac cycle. It’s an indicator of adequate blood supply to your organs and can signal if there’s a risk of organ damage. It’s calculated with the following formula: diastolic pressure + (systolic pressure – diastolic pressure) / 3
Normal range: 79.9–99.1.Pulse pressure — the difference between your top and bottom numbers. It’s an assessment of cardiac output and vascular stiffness. Values that are too high or too low can be a sign of stress as well as health problems. Normal range: 35–45.
For example, a blood pressure of 113/69 is considered healthy — it’s above 90/60 and below 120/70. The MAP in this case is 83.66, and the pulse pressure is 44. That means all four key indicators are within the normal range.
Now compare it with a reading of 120/67. The pulse pressure here is 53, which is slightly elevated. If this happens after a workout, it’s usually fine. But if it occurs regularly while you’re at rest, it could be a sign of a problem — in that case, it’s a good idea to check in with your doctor.
When should I worry about high blood pressure?
Opinions vary somewhat from one country to the next, but there are no drastic differences. We use guidelines published by the European Society of Cardiology (ESC).
According to these guidelines, systolic pressure of 120–134 mmHg or diastolic pressure of 70–85 mmHg is elevated but within the norm. Hypertension, or abnormally high blood pressure, starts with a top number of over 135 mmHg and a bottom number of over 85 mmHg. However, even if your blood pressure falls below these numbers while your MABP or pulse pressure are outside the normal range, it’s still best to talk to your doctor.
US guidelines set a more narrow normal range: a top number of 130–139 or bottom number of 80–89 mmHg is considered stage 1 hypertension.
We’ve posted the complete European and US guidelines below, but only a healthcare professional can diagnose you.
How do I know my blood pressure is too low?
There are no standardized norms here — it varies from one person to the next. But the Mayo Clinic, for example, considers it to be blood pressure below 90/60. We also use these numbers as a reference. It’s important to pay special attention to markers like MABP and pulse pressure in these cases. We take that into account in our interpretations.
When is the best time to measure blood pressure?
We recommend taking readings at the same time of day so you can track trends and changes better. Use your blood pressure monitor and stick to the following rules (also suggested by the Mayo Clinic):
Don’t measure when you’re really cold
Go to the bathroom beforehand
Don’t smoke before a reading, wait at least 30 minutes
Avoid caffeine for an hour before taking a reading
Wait at least an hour after a meal
Don’t take readings after physical exertion or major emotional stressors
How do I take an accurate blood pressure measurement?
If you followed all the guidelines above, here’s how to take a reading with a blood pressure monitor:
If you’re wearing long sleeves, take off your shirt. It’s best to not roll up your sleeves — you might put pressure on your arteries.
Relax against the back of your chair. Both of your feet should be on the floor. Don’t cross your legs.
Sit calmly for five minutes so that your blood pressure stabilizes.
Place the forearm of the arm on which you will be measuring on a table or other horizontal surface at chest level, palm up. Relax your arm
Position the cuff as described in the instructions for your blood pressure monitor.
Take the reading.
Which arm should I take my blood pressure from?
If this is your first time, take one from both arms. Afterward, take readings from the arm where the numbers are higher.
How do I track my blood pressure trends?
On charts or in the blood pressure log. Charts reflect changes in a more graphic way. A blood pressure log is more of a tool for your doctor. It includes the dates of your blood pressure measurements, your heart rate, systolic and diastolic numbers, and measurement scores. You can access your blood pressure log right from your blood pressure measurement details.
The log will include a special link you can share with your physician. You can also easily print out the information you need from your browser.
Note that those having a link to your blood pressure log will be able to access it at any moment. Be careful who you share the link with.
If you’ve been tracking your blood pressure for a long time
I know everything about my blood pressure, the norms, and keep a close eye on it. How can you help me?
You probably know full well that the latest guidelines recommend tracking MABP (means arterial blood pressure) and pulse pressure (the difference between your top and bottom numbers) along with your systolic and diastolic readings. We take these indicators into account when analyzing your measurement in order to give you a complete interpretation.
Also, if we got heart rate data along with the blood pressure, you will see additional indices that will give you even more information about your cardiovascular system. You can use them to keep an eye on your resilience and see how well your cardiovascular system is running overall. For details, see Why track blood pressure in the first place? above.
Moreover, we automatically keep your blood pressure log — open it right from your blood pressure measurement details in Welltory Premium. You can also print it out or share it with your physician using a special link.
Why is a reading of 120/80 not considered ideal?
These numbers are considered to be within the norm in Europe. However, the latest blood pressure research from the US and Europe consider readings between 90/60 and 120/80 to be ideal.
What kinds of readings do you consider normal?
Our analysis is based on the guidelines published by the European Society of Cardiology (ESC). There are US guidelines as well. They have different scales for high blood pressure. But in any case, only a medical professional can diagnose you.
My blood pressure falls outside the norm, but it’s normal for me, and I feel fine. I’m ok, right?
Not necessarily. You might not feel that something is wrong. First, high blood pressure doesn’t always come with additional symptoms. Second, your body may have simply adjusted to high blood pressure if it’s normal for you. But this doesn’t mean high blood pressure is ok. For example, readings over 130/90 put you at a higher risk of stroke and other problems, no matter how you feel objectively. It’s a good idea to keep an eye on this kind of blood pressure and try to lower it.