30%
of adults suffer from hypertension
50%
are not aware of their condition
50%
of those diagnosed don’t have it under control
£260
Billion annual worldwide cost of hypertension
Trusted by doctors
Validated accuracy
Our pivotal study has proven that the Aktiia solution is as accurate as accepted reference measurements.
Meets ISO81060-2 standard¹
Systolic BP Accuracy: 0.45 ± 7.75 mmHg¹
Diastolic BP Accuracy: 0.38 ± 6.86 mmHg¹
Accurate in multiple body positions
clinical trials
Supported by six clinical trials
We believe in open results. The Hilo by Aktiia device has been tested and reviewed in six clinical trial papers. See the latest studies below:
2025
Continual Versus Occasional Blood Pressure (COOL-BP) in Remote Hypertension ManagementRemote hypertension management programs have emerged as potential solutions to improve poor rates of blood pressure (BP) control. The Continual Versus Occasional Blood Pressure (COOL-BP) Study investigated the feasibility and efficacy of using a cuffless wrist BP monitor in a remote hypertension (HTN) program.
Read paper2025
Evaluation of Aktiia Cuffless Blood Pressure Monitor Across 24-hour, Daytime, and Night-time Measurements Versus Ambulatory Monitoring: A Prospective Single-Centre Observational StudyCuffless blood pressure (BP) monitors represent an innovative approach to BP assessment, overcoming the traditional episodic nature of readings obtained from cuff-based, oscillometric modalities. Nonetheless, the comparison of these cuffless devices against their cuff-based counterparts remain debated.
Read paper2023
Performance of the Aktiia optical blood pressure measurement device in the elderly: a comparison with double blinded auscultation in different body positionsAccurate blood pressure (BP) measurement is essential for the correct diagnosis and management of hypertension (HTN) especially in the elderly population. As with all BP devices, the accuracy of cuffless devices must be verified. This study aimed to evaluate the performance of a wrist cuffless optical BP device in an elderly population cohort in different body positions with auscultation as the reference measurement.
Read paper2023
Validation of the Aktiia Cuff for clinical use according to the ISO81060-2:2013 protocolAssess the accuracy and precision of the Aktiia initialization oscillometric upper-arm cuff device (Aktiia SA, Neuchâtel, Switzerland) for home blood pressure (BP) monitoring in the general population according to the American National Standards Institute / Association for the Advancement of Medical Instrumentation/International Organization for Standardization standard.
Read paper2021
Blood pressure from the optical Aktiia Bracelet: a 1-month validation study using an extended ISO81060-2 protocol adapted for a cuffless wrist deviceThe objective of this study was to assess the accuracy and precision of the Aktiia Bracelet, a CE-marked noninvasive optical blood pressure (BP) monitor worn at the wrist, over a period of 1 month.
Read paper2019
Accuracy testing of a new optical device for noninvasive estimation of systolic and diastolic blood pressure compared to intra-arterial measurementsThe objective of this study was to compare the systolic (S) and diastolic (D) blood pressure (BP) estimations from a new optical device at the wrist with invasive measurements performed on patients scheduled for radial arterial catheterization in the ICU. Optical signals were automatically processed by a library of algorithms from Aktiia SA (OBPM – optical blood pressure monitoring algorithms).
Read More
2023
Validation of the Aktiia blood pressure cuff for clinical useAssess the accuracy and precision of the Aktiia initialization oscillometric upper-arm cuff device (Aktiia SA, Neuchâtel, Switzerland) for home blood pressure (BP) monitoring in the general population according to the American National Standards Institute / Association for the Advancement of Medical Instrumentation/International Organization for Standardization (ANSI/AAMI/ISO) 81060-2:2013 standard.
Read paper2023
Aktiia cuffless blood pressure monitor yields equivalent daytime blood pressure to an ambulatory oneAktiia cuffless blood pressure monitor yields equivalent daytime blood pressure measurements compared to a 24-h ambulatory blood pressure monitor: Preliminary results from a prospective single-center study
Read paper2022
Guidance for the interpretation of continual cuffless blood pressure data, as highlighted by AktiiaGuidance for the Interpretation of Continual Cuffless Blood Pressure Data for the Diagnosis and Management of Hypertension
Read paper2021
Validation of the optical Aktiia bracelet in different body positionsValidation of the optical Aktiia bracelet in different body positions for the persistent monitoring of blood pressure
Read paper2021
Validation of the optical Aktiia bracelet in different body positionsValidation of the optical Aktiia bracelet in different body positions for the persistent monitoring of blood pressure
Read paper
backed by science
It’s the clinically validated real deal
Developed by cardiologists & PhDs
Pr. Grégoire Wuerzner
Principal Investigator of the pivotal validation studies, CHUV, Switzerland
“As the principal investigator of Aktiia’s pivotal clinical trial, I am pleased that the result of our study shows that Aktiia solution is accurate and allows patients and physicians to track their blood pressure daily. I believe Aktiia solution has the potential to change the management of hypertension.”
Prof. Melvin Lobo
NHS Professor of Cardiovascular Medicine, Director Barts BP Clinic
Dr. Bruce Alpert
Plough Foundation Chair of Excellence, U of TN. American Heart Association Fellow
Pr. Grégoire Wuerzner
Principal Investigator of the pivotal validation studies, CHUV, Switzerland
Prof. Melvin Lobo
NHS Professor of Cardiovascular Medicine, Director Barts BP Clinic
Dr. Bruce Alpert
Plough Foundation Chair of Excellence, U of TN. American Heart Association Fellow
Pr. Grégoire Wuerzner
Principal Investigator of the pivotal validation studies, CHUV, Switzerland
Pulse Wave Analysis
Aktiia’s approach to pulse wave analysis
Aktiia’s Optical Blood Pressure Monitoring (OBPM®) technology analyses photoplethysmographic (PPG) signals acquired at your wrist to estimate blood pressure, with no pain or inflation.
01.
PPG sensor
The Hilo band shines a green light to analyse how the arteries below the skin surface pulsate. This is the same sensing principle as most other optical heart rate monitors at the wrist.
02.
Optical signal
Aktiia goes beyond a heart rate monitor: instead of counting pulses, we examine their shape.
03.
OBPM algorithm
The pulse shape of your skin arteries contains information on your actual blood pressure.
04.
Blood pressure
Unfortunately, this information is obscured by noise. After 20 years of research and validation, Aktiia is able to extract this information to provide you with accurate blood pressure values around the clock.
Hilo app
Why does 24/7 blood pressure matter?
Taking more frequent, accurate blood pressure measurements at home
Measuring nighttime blood pressure to assess cardiovascular risk
Adjustment of medication titration based on blood pressure changes
Tracking how lifestyle changes like diet, exercise, or meditation affect blood pressure control
Keeping blood pressure in the target range (BP TTR) throughout the day and night to lower the risk for heart disease
Hilo app
Why does 24/7 blood pressure matter?
Automatically track 800+ precision measurements per month
Compare day/night blood pressure averages and your daily time-in-range
Monitor the impact of diet, exercise and stress on your heart health
See monthly trend lines and patterns to guide your next steps
Share insights with your doctor for informed medication adjustments
