There are plenty of wearables and smart devices out there today, but not all are created equal. Let’s discuss the similarities and differences between Kardia devices, and how they stand out against the rest.

There are four Kardia personal electrocardiograms (EKGs) available in the US— KardiaMobile®, KardiaMobile® 6L, KardiaMobile® 6L Max, and KardiaMobile® Card. All Kardia devices are FDA-cleared and record medical-grade EKGs right on your phone or tablet. You’ll get an instant analysis in just 30 seconds letting you know if an arrhythmia is detected. All Kardia devices are capable of detecting up to six of the most common arrhythmias—Atrial Fibrillation (AFib), Bradycardia, Tachycardia, Sinus Rhythm with PVCs, Sinus Rhythm with SVE, and Sinus Rhythm with Wide QRS. The latter three determinations are only available with a KardiaCare membership or KardiaMobile 6L Max.

Let’s dive into how Kardia EKGs differ from one another.

What is KardiaMobile?

kardiamobile single lead ekg device

KardiaMobile is a single-lead personal EKG. It’s our original Kardia device and has been recommended by doctors for over a decade. KardiaMobile has two sensors and records EKG Lead I only. KardiaMobile can detect Normal Sinus Rhythm, AFib, Bradycardia, and Tachycardia in seconds. A wider range of determinations is available with a KardiaCare membership.

What is KardiaMobile 6L?

kardiamobile6l six lead ekg device

KardiaMobile 6L is a 6-lead personal EKG. It’s the world’s first FDA-cleared, 6-lead personal EKG and has changed the way people care for their hearts from home. KardiaMobile 6L has three sensors and records EKG Leads I, II, III, aVL, aVR, and aVF. The more leads recorded, the more detailed view of your heart rhythm. KardiaMobile 6L can detect Normal Sinus Rhythm, AFib, Bradycardia, and Tachycardia in seconds. A wider range of determinations is available with a KardiaCare membership.

What is KardiaMobile 6L Max?

kardiamobile6l max ekg device

KardiaMobile 6L Max is a 6-lead personal EKG that includes a full year of our heart health membership KardiaCare. It’s the most advanced personal EKG outside the hospital. KardiaMobile 6L Max has a polished white finish and three sensors that record EKG Leads I, II, III, aVL, aVR, and aVF. At no additional cost, KardiaMobile 6L Max can detect Normal Sinus Rhythm, AFib, Bradycardia, Tachycardia, Sinus Rhythm with PVCs, Sinus Rhythm with SVE, and Sinus Rhythm with Wide QRS. KardiaMobile 6L Max provides exclusive access to a suite of advanced KardiaCare features like KardiaAlert, Clinician Reviews, Insights, Summary Report, AskKardia, and more.

What is KardiaMobile Card?

kardiamobilecard ekg device

KardiaMobile Card is a single-lead personal EKG. It's the world's only FDA-cleared, credit card-sized personal EKG. KardiaMobile Card fits perfectly in your wallet and makes it easy to carry with you anywhere. KardiaMobile Card has two sensors and records EKG Lead I only. KardiaMobile Card can detect Normal Sinus Rhythm, AFib, Bradycardia, and Tachycardia in seconds. A wider range of determinations is available with a KardiaCare membership.

Want more? Compare our Kardia personal EKGs side-by-side.


How does Kardia compare with other wearables and health trackers?

From Apple Watch® and Oura®, to Fitbit® and Whoop®, there’s a lot to consider when deciding what you truly need in a smart device. One thing is for sure, if you’re looking for a device that provides reliable, accurate, and detailed information on your heart health, look no further than Kardia. Here’s why:

  • The most FDA-cleared determinations
    Kardia devices can detect more arrhythmias than any smartwatch or wearable. Kardia devices are FDA-cleared to detect AFib, Bradycardia, Tachycardia, Sinus Rhythm with PVCs, Sinus Rhythm with SVE, and Sinus Rhythm with Wide QRS.

  • Unmatched clinical validation
    Kardia devices are the most clinically-validated personal EKGs in the world, meaning they have more research and clinical studies to back up the technology than any other personal EKG device.

  • 6-lead heart data
    KardiaMobile 6L and KardiaMobile 6L Max record six leads of heart data—information that you can’t get with a fitness tracker. If you’ve been diagnosed with a heart condition, or suspect there may be something wrong with your heart, KardiaMobile 6L and KardiaMobile 6L Max will give you the most in-depth view of your heart outside the hospital and provide invaluable information for your doctor.

  • Portable and convenient
    Kardia devices are small enough to fit in your wallet, purse, or even your pocket. They’re easy and convenient to bring with you, but you don’t have to wear it 24/7. Simply take your Kardia device out when you feel a symptom and start recording your EKG instantly, no matter where you are.

  • Affordable
    Where some wearables can cost upwards of $400, Kardia devices start at just $79, giving you a significantly more affordable way to care for your heart from home.

Get your Kardia device

Start taking control of your heart health from home with Kardia. Get your device today.


Kardia personal EKGs are not tested or recommended for use with pacemakers and ICDs. Kardia personal EKGs do not check for heart attack and do not replace regular health checkups with your physician. Seek medical attention if you are experiencing any concerning symptoms or if you are having an emergency.