Heart Monitor System

Prescribe. Diagnose. Act.

The only patch-free Remote Heart Monitor that provides real-time diagnostic-quality ECG analysis and heart sound recordings simultaneously to the patient and healthcare provider. FDA cleared, reimbursed and used by thousands of patients.

A complete platform ideal for long-term Remote Patient Monitoring (RPM) programs, telecardiology and as complement to retrospective ECG patches.

Coala Heart Monitor and iPhone with app with analyzed ECG curve
Digital revolution

Real-time cardiac diagnostics

COALA is a unique medical innovation based on more than 10 years of R&D, with more than 30 patents and over 15 industry awards.

A device and cloud-based solution including a high-performance stethoscope, three integrated electrodes to capture diagnostic-quality ECG and smart algorithms enabling real-time analysis of data.

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See for yourself why hundreds of clinics and thousands of patients use Coala. Fill out the form to schedule a free demo customized for your clinic's specific needs


  • 350+connected clinics
  • 30billiondatapoints analyzed
  • 87%PPV accuracy

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Woman measuring chest ECG with Coala Heart Monitor_Connect Rx

Remote Patient Monitoring

Enabling Cardiac Telemedicine

Prescribe COALA as a short or long-term monitoring solution to help diagnose symptomatic arrhythmias or murmurs. No wires, No patches, No waiting for reports and No unexpected bills for the patient. Home enrollment is now available, read more here.

Recordings are easy to access with automatic interpretation and real-time reports in the cloud based Coala Care portal. As it’s fully reimbursed, the COALA ensures your team’s time is covered, and at minimum patient co-pay.


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"We prescribe the Coala in our general practice"

- A key benefit of the Coala is that we have been able to empower patients, nurses and doctors around cardiac disease. The Coala is now a natural part of our workflow, diagnosis of AF and threshold for prescribing anti-coagulants or ablations.

Sara Banegas General Practitioner, Ekerö Vårdcentral, Sweden

A unique digital solution addressing the needs of modern cardiology

Three reasons for the heart



Real-time analysis of 9 of the most common arrhythmias and P-wave based detection with industry leading accuracy. Integrated stethoscope enabling remote auscultation of heart and lungs. Instant feedback to patient and provider.



Prescribe as 30-day Event Monitor or as a long-term Remote Patient Monitor (RPM) as long as medically necessary. Wireless and adhesive-free design improves patient compliance. No waiting for results with on demand ECG reports.



A scalable system with a pay-per-use business model. No upfront costs or separate license fees. Ideal for telemedicine services with ability to enroll in the clinic or in the safety of the patient’s home. Nominal cost for patient.

Patch and wire free ECG

The non-invasive long-term cardiac monitor

The Coala Heart Monitor is an ideal complement to retrospective ECG patches that have limits in time and use. The technology is based on state-of-the-art 1,000 Hz and 24-bit ECG digital architecture with high-resolution data analyzed by a cloud-based platform.

The HIPAA-compliant and ISO 27001 certified Coala Care portal presents data in real-time to providers and includes a smart report generator with ability to manually annotate and download raw data for further analysis. Today, more than 350 clinics and in excess of 1,000 physicians are connected to the Coala Care portal.

Coala Connect Rx direct-to-patient

Now available on virtual prescription direct to patient

The Coala Heart Monitor is now offered as a direct-to-patient prescription across the US. Simply complete form below be connected with a cardiologist.

A brief telemedicine visit will be scheduled and if you are eligible, a Coala will be prescribed and shipped directly to you. Covered by most payors.

Nationwide coverage without surprises for patient

The COALA is covered by several CPT-codes from 30 days up to 12 months of use. Patients only pay a minor co-pay and unlike many other cardiac monitors, they will never receive any separate bills for technical interpretation.

Patients who use COALA love the experience, ease and comfort of immediate response. It’s often prescribed to patients with palpitations, who might have been alarmed by their consumer monitors, or for long term monitoring in daily life. For more information on modalities of use, see here.

Proven to reduce symptoms from palpitations

The COALA was used in the RedHeart Study by the Karolinska Institute (Stockholm, Sweden) and included nearly 1,000 women and over 200,000 ECG recordings in everyday life. The COALA was used over 60 days and the study showed an increase in quality of life in women with palpitations, because of the instant results that helped reduce symptoms, anxiety and depression

The Coala was used in the pivotal TEASE-study to monitor cryptogenic stroke patients from home, as was shown to be a cost-effective and patient-centered alternative to insertable cardiac monitors. The patient reported feasibility and satisfaction was very high.

Smart algorithms

The only smartphone ECG with P-wave based AF detection

The COALA is a CE and FDA 510(k) cleared system supported by strong clinical data. The high-fidelity 2-lead system captures chest-ECG synchronized with heart sound recordings and thumb-ECG to maximize quality, precision and accuracy - with less artifacts and minimized false positives.

Smart algorithms analyze in real-time for 9 of the most common arrhythmias. AF is detected by P-waves and RR variability. Conventional 1-lead ECGs typically only detect AF based on RR variability, leading to high false positives. The COALA has been proven to be 300% more accurate than standard 1-lead ECG solutions, typically used in watches and other portable ECG’s.

Support during COVID-19

lung auscultation

The COALA can also be used for remote monitoring of lung sounds from a patient’s home. The unique stethoscope and respiratory monitoring solution is available with support of FDA’s Emergency Guidance during the COVID-19 public health emergency.

Easy to enroll patient’s directly from their homes, eliminating the need of physical visits. Data is transmitted in real-time, making COALA ideal for Telemedicine use.

Securing patient compliance

The cardiology RPM platform

COALA and the Coala Care portal create an ideal Remote Patient Monitoring (RPM) platform. Full suite of functionality including on-demand reports and timers. The COALA App can also be used to collect concurrent Blood Pressure and weight data.

Successful RPM programs require good patient compliance. The COALA has been proven in studies to have high patient compliance and satisfaction over longer periods of time.

Bill under the Event or RPM codes

The COALA is a unique 2-in-1 solution that can be prescribed as an Event Monitor (billed globally as CPT 93268) and/or used to follow patients long-term in RPM programs and billed monthly (CPT 99453, 99454, 99457 and 99458).

The COALA is available for Home Enrollment, where it’s shipped direct to the patient enabling virtual cardiac diagnostics and eliminating physical patient visits.

Clinical need Holter Patches MCT Coala
Diagnostic Quality ECG
Improved diagnostic yield
Home enrollment possible
Real-time data and reports
Reducing patients burden with wire, patch and adhesive free ECG
Improving patient empowerment with instant analysis and results
Recording heart and lung sounds
Enabling long-term use beyond 30 days and in RPM programs
Favorable reimbursement for providers. Lower cost for payors.
Enabling real-time Telemedicine
Meeting clinical pain points

Industry leading capabilities

The COALA is designed for real-time remote monitoring of heart and lungs. Real-time ECG analysis with integrated stethoscope enabling remote auscultation of heart and lungs.

Prescribe as a 30-day Event Monitor or as a long-term Remote Patient Monitor (RPM) as long as medically necessary. No waiting for results with on demand ECG reports.

Ideal for telemedicine services with ability to enroll in the clinic or in the safety of the patient’s home.

Integrated stethoscope

Murmur detection algorithms

COALA has an integrated high-performance stethoscope enabling remote auscultation of heart and lungs. The Coala Phonocardiogram (PCG) analyzes the heart sound in perfect sync with the ECG to aid the detection of S1, S2 and murmurs. Enhance the remote auscultation by using the five integrated filters in the Coala Care portal.

Yes, I want to schedule a demo

Easy and accessible

How does COALA work?

Connect via Bluetooth to a smartphone and simply hold the COALA to the chest for 30 seconds to capture ECG and heart sounds, followed by a 30 second thumb-ECG recording.

Smart algorithms analyze the recordings instantly. Results are available within seconds in the Coala app and to the healthcare provider in the Coala Care portal.

video image
Implementation of COALA

Increase efficiency and patient satisfaction

A recent clinical evaluation of the Coala Heart Monitor at one of Scandinavia’s largest cardiac and electrophysiology clinics proved a number of positive effects including higher clinical efficiency, as well as increased patient satisfaction and reduced patient anxiety.

Selected studies

Study Summary

Summary of clinical studies with the Coala Heart Monitor

Carnlöf, Schenck-Gustafsson, Jensen-Urstad, Insulander. Karolinska Institutet and Karolinska University Hospital

Instant ECG feedback with a new digital technique reduces symptoms caused by palpitations and increases health-related quality of life (the RedHeart study)

European Journal of Cardiovascular Nursing, March 2021

Schenck-Gustafsson, Carnlöf, Jensen-Urstad, Insulander. Karolinska Institutet and Karolinska University Hospital

Improving Efficiency of Clinical Studies Using a Total Digital Approach: Prospective Observational Study

JMIR Formative Research, Feb 2021

Olsson and Samuelsson, 2020

Quality validation of different ECG leads, and an automatic P-wave detection algorithm for AF, based on real-world data

AHA EPI Lifestyle 2020, Phoenix, Arizona

Magnusson et al. 2020

Diagnostic yield of chest and thumb ECG after cryptogenic stroke, Transient ECG Assessment in Stroke Evaluation (TEASE): an observational trial

BMJ Open, Aug 2020

Carnlöf, Schenck-Gustafsson, Jensen-Urstad, Insulander. Karolinska Institutet and Karolinska University Hospital

Instant analysis of the ECG with direct response during palpitations reduce symptoms, anxiety, depression, and increase HRQOL in women

Cardiovascular Spring Meeting (Kardiovaskulära Vårmötet) 2019, Gothenburg