Kardia Mobile Review, Portable & Powerful Health Monitor Device

This Kardia Mobile review post will explain the major features of the device and the app. Also, the review includes my analysis of the customer reviews, which will show you the overall sentiments toward this …

Kardia Mobile Featured Img

This Kardia Mobile review post will explain the major features of the device and the app. Also, the review includes my analysis of the customer reviews, which will show you the overall sentiments toward this health app. Let’s first find out the firm behind this product.

About Alive Technology

Alive Technology (Alive Tech) was established in 2002, and the firm is located on the Gold Coast in Queensland, Australia. Alive Tech focuses on medical devices using wireless health monitoring systems. They develop their products both for health professionals and consumers. Their first product was AliveCor Heart Monitor that was developed with the collaboration of Dr. Dave Albert, a US entrepreneur.

The company has a long history of 17 years in the medical device market. When I researched the firm, I could find numerous positive news coverage about them. As you will find in my customer review analysis section, the market reaction seems to be favorable to the firm and its products. In the next section, we will find what major features Karadia Mobile has.

Kardia Mobile Img
Kardia Mobile Device

Kardia Mobile Major Features

The Kardia Mobile ECG (Electrocardiogram) records a cardiac event. The product consists of a device an app that let you record and check ECG. With the device, you can your ECG anywhere with your smartphone. The Kardia Mobile device is attachable to the back of your phone and is interactive with the free app wirelessly. The Kardia Mobile ECG is designed for health professionals and consumers.


When you imagine a medical device, you might think of something big and scary equipment. The Kardia Mobile is smaller than a mobile phone, thus it fits on most of the mobile devices. You can simply put your fingers or chest to the device pads to monitor an ECG.


The AliveCor’s proprietary technology can receive electrical impulses from the user’s fingertips and change the signals into ultrasound. The ultrasound then gets transmitted to the microphone of your device that will interpret and display the signals. The transmission and reception of the signal run efficiently that it will minimize battery drain.

Benefits to Users

The device is mobile-friendly so you can bring the device anywhere you go. You can keep track of heart health as frequently as you like. The individuals that are diagnosed with heart conditions or health-conscious will benefit the most from this product.

Easy to Use

Recording your ECG is very easy. You can simply put your fingers on the metal pads to start monitoring.

Widely Compatible Hardware

Currently, the AliveCor’s Kardia Mobile ECG is the 4th generation and is compatible with most of the iOS and Android devices in the market. The physical device, a heart monitor, has an attachment plate on the back. The single-use attachment allows the device to be attached to the mobile phone’s protection case or the smartphone itself. The device does not have a phone case.

Long Battery Life

Alive Tech explains that the device uses a 3V Coin Cell battery that would typically last 12 months.

Check Your Heart
Check Your Heart
Photo by Anh Tran on Unsplash

Features of the App

The Kardia Mobile free app enables you to visually watch your ECG signals on your smartphone. You can use the app on most of the iOS and Android phones. You can use the app to record and store your heart signals.

Advanced Filters

It has a filtering feature that reduces artifact and achieves a high fidelity tracing. The tracings are medical grade and compatible to Lead I (explained in a separate section below) on standard ECG machines.

Store Symptoms and Patient Details

It is important to store symptoms and details to keep track of changes or progress of a symptom. You can record patient details, symptoms, and notes.

Automatic AF Detection

You can know instantly if atrial fibrillation, or AF, occurs in your ECG. Alive Tech explains that AF is the most common disturbance in heart rhythms that can lead to a stroke.

Optional Premium Service

Although you can start using the app for free, you will need to pay to unlock more features. With a paid option, you can store history and ECG recordings unlimitedly. Also, the paid version will generate a monthly ECG report to share with your doctor. The app offers a free trial that begins 30-day free access to all features starting from the time you receive your Kardia Mobile and make an account with the app.

After 30 days, you will have to pay $12.99 per month to keep access to all features or downgrade to the Basic version.

Check recordings anywhere anytimeOO
ECG analysisOO
Detect normal heart rhythms or AFibOO
Send email unlimited ECG records to your doctorOO
Track blood pressure and weight OO
Unlimited cloud storage and ECG historyO
Customized monthly reportsO
Track medicationsO
SmartRhythm monitoring and Apple Watch notificationsO

How to Use

As mentioned above, the device is designed for everyone to use easily. You can follow the three steps to use the device and the app.

  1. Attach the Kardia Mobile ECG to the back of your mobile phone.
  2. Download the Kardia app from App Store for iPhone or Google Play Store for Android phone. Create a new account.
  3. Start recording your ECG signals. Use the Kardia Mobile’s feature

Terms and Other Useful Information

This section will explain some medical terms used in the sections above and heart-related symptoms.

Lead I ECG

According to the Utah University website, 12-lead ECG holds spatial information about the heart’s electrical activity in 3 orthogonal directions. Each of the 12 leads shows a specific orientation in space. Among them Lead I indicate Right Arm (-) to Left Arm (+). This means that the Kardia Mobile device can sense the leads from your right and left arms and interpret the signals.

Atrial Fibrillation (AF)

According to Mayo Clinic, a health website, Atrial Fibrillation is an irregular and rapid heart rate that can lead to strokes, heart failure, and other heart-related complications. Some patients with AF have no symptoms thus are unaware of the condition. They find out about the condition when they take a physical exam. Those with AF symptoms may experience the following:

  • Palpitations (irregular, uncomfortable, or racing sensation or flip-flopping in your chest)
  • Weakness or reduced ability to exercise
  • Fatigue
  • Dizziness
  • Lightheadedness
  • Breath shortness
  • Chest pain

Since the symptoms are not very apparent, Kardia Mobile can be useful to detect the symptoms.


As of 28 Aug, 2020, AliveCor Kardia Mobile is priced at $149 USD on Amazon AliveCor KardiaMobile Personal EKG | FDA-Cleared | Detects AFib.

How Customers Think About Kardia Mobile

When you see product introduction from a company, you will always hear great things about it. No company will reveal any weaknesses or defects of the product, obviously. So, as a consumer, it is wiser to doubt what they say and do your own research before making a final purchase decision. In this section, we will learn how actual users think about Kardia Mobile. How can we measure these? We can do this by using data analysis techniques called sentiment analysis.

You don’t have to be scared by the technical term. I did the technical part and you can just look at pretty graphs. In this section, I will show you two types of graphs – word cloud and customer sentiment chart. For the analysis, I’ve compiled more than 2,400 customer reviews from Amazon and conducted analysis to summarize them. I will show you the result in a word cloud and a customer sentiments chart. And, lastly, I will share a Kardia Mobile’s Google trend result that shows the level of interest from people.

Word Cloud

Word cloud is one of the great and fun ways to understand customer sentiments toward a product or a service. In a word cloud, you can see specific words in different sizes. The larger it is, the more people used that word to describe the product. For this word cloud, I used the titles of the reviews, since people put the essence of their opinions in the title. The 2,400+ reviews allowed me to generate an interesting word cloud that let me reach a positive conclusion. Let’s have a look!

Kardia Mobile Positive Word Cloud
Kardia Mobile Positive Word Cloud

Understanding the word cloud is easy. Just follow your eyes and see what you see. You will see that most of the big words are all positive. This means that customers have had a positive experience with the service. People used words like “fivestars”, “great”, “good”, “easy”, “worsgreat”, and more positive terms to describe this product.

Customer Sentiments

In the word cloud, we were able to observe what descriptive words people used to talk about Kardia Mobile. As mentioned, the word cloud is based on the titles of customer reviews, but the sentiment analysis graph was generated by the contents of the reviews. In the sentiment analysis, we will see more specific types of feeling that people showed in their review. In the analysis, you can see 10 different sentiments such as positive, negative, trust, anticipation, joy, fear, sadness, anger, surprise, and disgust.

The technology behind the chart is straightforward. The analysis algorithm holds 10 different lists – each list containing words that are mapped to one of the 10 sentiments. When this algorithm runs, it checks and matches with one of the sentiments. When matched, it is counted as one and is categorized in one of the 10 sentiments. My analysis of the positive reviews appears as below.

Positive Sentiments
Positive Sentiments

The chart is also not difficult to understand. You can see that the positive sentiment is ranked number one. The first rank is followed by “negative”, “trust”, “anticipation”, “sadness” and “fear”. It does have some negative opinions, but overall, people expressed more positive sentiments than negative ones. So my customer review analysis told me that many people have a positive experience with the health device.

Google Trend

As the final segment of analysis, let me share the trend of Kardia Mobile. I used Google Trend to check how frequently “Kardia Mobile” is searched on Google over the past 3 years. Google Trend is a useful tool to measure the interest of people. The more frequently people search on Google, the more popular or trendy it is. The Google Trend (may not visible on a mobile phone) of the product below shows that people have consistently shown an interest in this heart monitoring device over the period.

This continuous interest for 3 years could be a positive sign for a purchase decision.

Please note that this is a global trend.  If we break down by country, we can see that the biggest interest has come from the United States followed by Ireland, Canada, and the United Kingdom.


If you are worried about your heart health or if you are a heart doctor, having a portable health monitoring device won’t be a bad idea. My analysis on customer reviews and Google Trend support that KardiaMobile has received positive feedbacks and constant attention from people.

Please mind that you may want to consider to pay the premium subscription fee for more features. As I researched the customer reviews, many people were not aware that the premium features are not free. You can start with the free trial, of course. But, be prepared that you might want to pay the subscription fee.

Useful Links

If you want to have an actual look at the device and how it works, please watch the YouTube video that demonstrates the device and the features.