Frontier X2 or
Frontier X Plus?

Find the Right Fit for You

The Frontier X2, is a chest-based heart monitor. It is a wellness-focused device designed for fitness enthusiasts and individuals looking to monitor their overall health and lifestyle metrics. It delivers real-time heart health insights, such as HRV, strain, heart rate, calories, stress, body shock, training load, and more during exercise and sleep. It ensures high signal quality of ECG for comprehensive heart health tracking during various activities, including running, walking, cycling, and 20+ other activities. You can record, live-stream, and securely share your ECG and heart health data with anyone, anywhere in the world.

The Frontier X2 is a chest-based heart monitor for fitness and wellness, providing real-time insights on HRV, heart rate, strain, stress, and training load during exercise and sleep. It supports 20+ activities and allows users to record, live-stream, and securely share ECG data worldwide.

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*Frontier Premium includes a 7-day risk-free trial with a money-back guarantee if you're not satisfied by the end of the trial period.

The Frontier X Plus  is a FDA 510(k)-cleared, prescription-based medical device that records and transfers single-channel ECG data, providing automated detection of atrial fibrillation (AFib), tachycardia, bradycardia, normal sinus rhythm and other arrhythmias. This chest-based wearable ambulatory ECG is ideal for patients who need reliable, clinical-grade data to manage and monitor heart health under medical supervision.

The Frontier X Plus is an FDA 510(k)-cleared, prescription-based device that records and transfers single-channel ECG data, detecting arrhythmias such as AFib, tachycardia, bradycardia, and normal sinus rhythm.

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*Frontier Premium includes a 7-day risk-free trial with a money-back guarantee if you're not satisfied by the end of the trial period.

Choosing Between Frontier X2 and Frontier X Plus

Metrics
Industry
Designed for the wellness industry, focusing on fitness, stress management, and general health monitoring.
Targeted at the medical field, emphasizing accurate detection, clinical use, research and condition monitoring.
FDA 510(k) Cleared
Frontier X2 is not FDA cleared device. It is primarily a wellness tracker, not classified as a medical device.
Frontier X Plus is FDA 510(k) cleared. It is approved for medical use, ensuring its safety and efficacy for diagnostic purposes.
Prescription Based
No. Since it's a fitness tracker, you can buy it without a doctor's prescription.
Yes. It requires a doctor's prescription.
AFib & Other Arrhythmias Detection
The device is not intended to detect irregular heart rhythms like atrial fibrillation (AFib), tachycardia, bradycardia, etc.
The device is capable of detecting arrhythmias such as AFib, tachycardia, bradycardia, and other irregular heart rhythms, enabling early intervention.
Holter Report
It is not designed to generate detailed Holter monitoring reports.
The Frontier X Plus is compatible with leading Holter reporting platforms and can be used to record ECG data as part of a prescription Holter monitoring procedure.
Weekly Report (Time spent in different heart rhythms)
Weekly reports of various arrhythmia is not included. No weekly breakdown or analysis of time spent in different heart rhythms.
It provides detailed reports summarizing the percentage of time spent in various arrhythmias, such as AFib, tachycardia, bradycardia, other arrhythmias, or normal sinus rhythms.
Continuous ECG
The device records a continuous ECG, useful for tracking heart activity in real time.
Frontier X Plus records continuous ECG, ensuring medical-grade accuracy and data reliability.
Live ECG Streaming
Live streaming of ECG data is available, allowing users to monitor their heart activity in real time.
Live streaming of ECG data is available, allowing clinics to remotely verify ECG quality during ambulatory monitoring.
HRV & Real-time Vibration Alerts
Yes. It tracks Heart Rate Variability (HRV) and provides vibration alerts for breathing rate, heart rate and other wellness metrics.
No. The device does not include HRV tracking or vibration alerts, focusing more on medical use than wellness insights.
Other Wellness Focused Metrics
Yes. The device is designed to provide insights into fitness-related metrics like training load, calorie burn, stress levels, and breathing rate.
No. Frontier X Plus prioritizes medical assessments over fitness tracking.
Premium Subscription for Advanced Wellness Metrics
Yes. It offers advanced fitness metrics with a paid subscription, including VO2 Max, sleep staging, and readiness scores.
No. The device does not include advanced wellness metrics as they are more relevant to fitness and wellness than medical applications.

Choosing Between Frontier X2 and Frontier X Plus

1. Industry
Wellness - focusing on fitness and general health monitoring.
Medical - emphasizing detection, clinical use, research and condition monitoring.
2. FDA 510(k) Cleared
It is not FDA cleared device.
It is FDA 510(k) cleared.
3. Prescription Based
No. You can buy it without a doctor's prescription.
Yes. It requires a doctor's prescription.
4. AFib & Other Arrhythmias Detection
Not intended to detect irregular heart rhythms like atrial fibrillation (AFib), tachycardia, bradycardia, etc.
Capable of detecting arrhythmias like AFib, tachycardia, bradycardia, and other irregular heart rhythms.
5. Holter Report
Not designed to generate Holter reports.
Works with top Holter platforms for prescription ECG recording.
6. Weekly Report (Time spent in different heart rhythms)
Weekly reports of various arrhythmia is not included.
It provides detailed reports summarizing the percentage of time spent in various arrhythmias.
7. Continuous ECG
Records a continuous ECG, useful for tracking heart activity in real time.
Records continuous ECG, ensuring medical-grade accuracy & data reliability.
8. Live ECG Streaming
Yes. Allows users to monitor their heart activity in real time.
Yes. ECG live streaming lets clinics remotely verify quality during ambulatory monitoring.
9. HRV & Real-time Vibration Alerts
Yes. It tracks HRV and provides vibration alerts for breathing rate, heart rate, etc.
No. The device does not include HRV tracking or vibration alerts.
10. Other Wellness Focused Metrics
Provides insights into fitness-related metrics like training load, calorie burn, stress, strain and breathing rate.
No. It prioritizes medical assessments over fitness tracking.
11. Premium Subscription for Advanced Wellness Metrics
Yes. Get advanced fitness metrics with a paid subscription, like VO2 Max, sleep staging, and readiness scores.
No. The device does not include advanced wellness metrics.

FAQs

How accurate is the ECG measured by the Frontier X2?

The ECG obtained from the Frontier X2 resembles the V5 lead position of a 12-Lead ECG. The quality of the ECG has been validated against a GE Holter Monitor.

Please note the Frontier X2 is a health & fitness product, and is not intended to be used for diagnostic or treatment purposes. Please read our detailed disclaimers here.

Is the Frontier X2 compatible with other external Heart Rate Monitors?

​The Frontier X uses Bluetooth Low Energy (BLE) Technology/Bluetooth Smart to sync with other devices as a heart rate monitor. These devices include certain models of ​Apple Watches, Garmins, Whoop Straps, Pelotons and more. If your external device is equipped with BLE/Bluetooth Smart technology, the Frontier X2 should easily sync as a heart rate monitor (HRM) with no issues whatsoever. 

The Frontier X2 can simultaneously connect to a maximum of 3 devices - 1 Mobile App & 2 External HRMs.

While the external device will only reflect Heart Rate, the Frontier X2 itself will reflect various metrics such as ECG (live and recorded), Breathing Rate, Strain, Heart Rate, Body Shock, and Training Load once it is connected to the mobile app, post your workout. You can see a more detailed view on the Frontier X web dashboard as well, once you've uploaded data from your device to the cloud.

Please note that the Frontier X2 does not support ANT+

Is the Frontier X2 compatible with other third-party fitness apps like Strava or Training Peaks?

There is currently no direct integration between the Frontier X2 and these fitness apps. However, there are a couple of workarounds.

When the Frontier X2 is connected to your phone/apple watch app and the phone/watch is carried along - it allows you to record GPS data as part of your workouts as well. The Frontier X2 doesn't have a GPS chip of its own, and thus uses the phone's/watch's GPS. You can then download a .FIT file of your workout from the Frontier X2 dashboard and upload it to apps like Strava, Training Peaks, JeFit etc. for further analysis. 

Alternatively, you can connect the Frontier X2 to an external HRM like a Garmin or Polar and then pass the information on to Strava or Training Peaks from your external HRM. The data uploaded onto Strava in this case will include the Heart Rate measured by the Frontier X2.

What is the battery life of the Frontier X2?

A fully charged Frontier X2 can last for up to 24 hours when recording data continuously and 14 days if used for an average of 1 hr/day.

Can I use the Frontier X2 without it being connected to my phone?

Yes. You can record data on the Frontier X2 without connecting the device to the mobile app. The Frontier X2 is equipped with a memory chip, unlike most other devices on the market. This ensures that even if you don't connect it to your phone during your workout, or choose to connect it to an external device like Garmin, there's zero data loss as you can come back home and connect the Frontier X2 to the phone later. Once synced, all metrics recorded on the device will be accessible.

Is the Frontier X2 waterproof?

Swimming is one of the most common use cases of the Frontier X2. The Frontier X2 is IP67 rated, which means that it is completely waterproof for up to 1.5 meters (approx. 3 ft).

Can the Frontier X2 be worn while exercising or playing sports?

Yes. The chest-worn design of the Frontier X2 keeps your hands free for sport and is tightly fastened to ensure good data quality during motion.

Can you use the Frontier X2 with a pacemaker?

While Frontier X2 has not gone through the official safety testing for use with pacemakers, we have several users who use the device with pacemakers. None of these users have reported any issues.

What is Frontier X Plus?

The Frontier X Plus™ by Fourth Frontier® is a wearable ambulatory electrocardiogram (EKG or ECG) recorder and display product that consists of a device affixed to the chest strap, a companion mobile application, and a web application for analysis of ECG. It is a novel, self-applied continuous ambulatory ECG solution for arrhythmia detection and management.

The Frontier X Plus system also displays ECG waveform and ECG rhythm analysis; detecting the presence of normal sinus rhythm, atrial fibrillation, bradycardia, tachycardia, inconclusive and unreadable rhythms. The device is intended for use by healthcare professionals to monitor patients with known or suspected heart conditions and health-conscious individuals. It is indicated for use on adult patients who may be asymptomatic or who may suffer from transient symptoms requiring cardiac monitoring. The device is a non-invasive, lightweight, rechargeable battery- operated wireless ambulatory ECG monitor.

Why is early detection of AFib important, and how does Frontier X Plus achieve this?

Early detection of atrial fibrillation (AFib) is crucial for preventing serious cardiac complications. Timely detection allows for early intervention through medication, lifestyle changes, or medical procedures, improving patient outcomes and preventing long-term health issues. The FDA-cleared Frontier X Plus, a chest strap-based heart monitor,  records and transfers single-channel ECG and provides automated detection of atrial fibrillation and other arrhythmias. Frontier X Plus achieves this with exceptional accuracy, boasting 98.10% sensitivity and 97.88% specificity for AFib detection.

How does Frontier X Plus improve patient compliance?

The Frontier X Plus improves patient compliance by offering a lightweight, wearable chest monitor that is comfortable and easy to use. Its real-time data tracking and wireless connectivity provide patients with instant feedback, making them more engaged in their health management. The wearable ECG solution is designed for comfort, encouraging consistent use. Patients can self-apply the device and integrate it effortlessly into their daily routines without disrupting their activities.

 Who should not use the Frontier X Plus device?

The Frontier X Plus  should not be used by individuals under the age of 22 years, pregnant women, or patients with potentially life-threatening arrhythmias requiring hospitalization or real-time/in-patient monitoring. Additionally, it is not suitable for individuals with known skin allergies to the materials listed in the "List of Patient-Contacting Materials."(mentioned in the section 1.4.4 of Frontier X Plus User Manual(PUBFXP001_Rev A0)

Can the device be used alongside external cardiac defibrillators or surgical equipment?

No, the device should not be used in combination with external cardiac defibrillators or high-frequency surgical equipment.

 What precautions should be taken if using a defibrillator?

Do not use a defibrillator with the Frontier X Plus device, as it may cause damage. Ensure the device is removed from areas where defibrillator electrodes are placed.

 Is the device suitable for detecting cardiac conditions like ischemia or myocardial infarction?

No, the Frontier X Plus is not indicated for the detection of cardiac conditions such as ischemia, myocardial infarction, or left ventricular hypertrophy (LVH).

 What should be done if the app identifies certain heart conditions as unreadable?

If the app identifies conditions like ventricular flutter, ventricular bigeminy, or ventricular trigeminy as unreadable, consult a physician for further analysis.

Does the Frontier X Plus guarantee the absence of arrhythmias or health conditions?

No, Frontier X Plus does not guarantee the absence of arrhythmias or other health conditions even if an ECG is labeled as normal. Always consult a physician for any potential health changes.