Absolutely fed up with terrible customer service. Product totally stopped working. I went through ALL their on line help. Did exactly as told. No luck. I’ve then had one email after another asking m... See more
Company replied
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See what reviewers are saying
The 6L produces some useful ecg data but if you have an intermittent arrhythmia, by the time you're ready to take the reading with it, the event has passed. If you happen to catch one then it does pro... See more
Initially, I thought the product was good. The multiple emails become tiresome. It became very difficult to cancel the subscription and I have been continually billed. Customer service is simply non-... See more
Company replied
Absolutely abysmal customer service. Same canned response. The device has great potential, just poorly made, extremely unreliable and lots of interference. My smartwatch is so much better.... See more
Company replied
Company details
Information provided by various external sources
AliveCor is a medical device and artificial intelligence company that sells ECG hardware and software for consumer mobile devices.
Contact info
Maiden Lane 30, 94108, San Francisco, United States
- alivecor.com
1.8
Poor
100 reviews
No recent history of asking for reviews
This company hasn't invited customers recently, so reviews may not be representative
Replied to 100% of negative reviews
Typically replies within 1 month
How this company uses Trustpilot
See how their reviews and ratings are sourced, scored, and moderated.
Reply from AliveCor
We sincerely apologize for your disappointing experience with both our device and our support team. We would appreciate the opportunity to make things right. Please call our consumer support team directly at 855-338-8800 so we can immediately address your concerns and help get your device working properly.
Alivecor does not provide promised services
Alivecor doesn't provide satisfactory customer service. Numerous times over many months they failed to establish data transmission of my readings to the doctor's office. They repeatedly assured me that they understood my issues and that the connection failure would be resolved. What was stated, though, proved to be lipservice. Following an attempt to seek BBB advocacy, Alivecor instead, simply canceled my subscription with no apparent attempt to correct the issue. This experience with AliveCor been very disappointing and provided no meaningful benefits to my healthcare or wellbeing. DON'T BUY OR TRUST KARDIA AND ALIVECOR!
14 July 2025
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustration and delays you experienced while trying to establish data transmission with your doctor's office. To make this right, we have fully refunded you for the price of the connection and provided a new replacement code so you can successfully connect your account to your physician's practice. If you need any assistance applying this code or have any further questions, please call our consumer support team directly at 855-338-8800.
Accurately picked up Afib episodes subsequently confirmed by cardiologist
Following major abdominal surgery I started noticing heart palpitations and a feeling of my heart lurching. My fitbit showed my heart was racing at 150-160bpm. The practice nurse advised me to get a kardia mobile as they are approved by Nice for detecting afib and the ECGs can be emailed which is easier than trying to capture an ECG at the GP practice when it is actually happening. The Kardia Mobile picked up both "Possible Atrial Fibrillation" and "Unclassified", as well as mainly "Normal Sinus Rhythm". I sent off one of each of the abnormal readings for clinical review and they came back confirming Atrial Fibrillation and Atrial Tachycardia. This tallies with the diagnosis I subsequently received from a cardiologist after wearing a 24hr ECG monitor. Although the cardiologist also detected Atrial Flutter, but I have only sent off 2 Kardia Mobile ECGs for review. I find it very useful when my heart starts pounding to be able to confirm what is going on with the Kardia Mobile. My fitbit does not pick up any of the Afib episodes although it shows me my heart is racing. Great device for helping me detect what was going on and great service from the clinicians in getting a quick analysis.
7 July 2025
Unprompted review
Reply from AliveCor
Thank you so much for sharing your detailed experience! We are incredibly glad to hear that the KardiaMobile helped you capture your heart palpitations and assisted in confirming your AFib and Atrial Tachycardia diagnoses following your surgery. It is wonderful to know that you found the clinical review service fast and helpful, and that the device continues to provide you with peace of mind when your heart starts racing. We wish you the best in your continued recovery and management!
I returned the 6L device
I returned the 6L device, cancelled my subscription (I thought) and never heard from them again, until recently. Turns out I've paying for 2 years and 3 months - I sent the proof of the return and refund and they gave me 3 months refund.
Very poor, given they can easily check when I last logged in and used the service.
Obvs they make it difficult to cancel, and we now know why.
24 April 2025
Unprompted review
Reply from AliveCor
We understand your frustration regarding the unexpected subscription charges. Please note that returning the physical device does not automatically cancel an active KardiaCare subscription, and subscriptions will automatically renew unless explicitly canceled.
As outlined in our Terms of Use, we are unable to provide refunds for subscription charges, even in cases of non-use. However, as a gesture of goodwill, we were able to process a refund for the last 3 months of your subscription.
If you have any further questions or need assistance confirming that your cancellation is fully processed, please call our consumer support team at 855-338-8800.
So far a waste of money and time !
It arrived ok, the instructions were very vague and clearly written by somebody who new exactly how it worked, which means a lot of details on set up were skipped over without a clear order of instructions.
My first problem was that AliveCor 6L would not give me a download of the App so I could register, they said get it off the Play Store, when I tried the PS refused me a download saying I already had two devices registered with them.
After a couple of days I located a Kardia 6L setup download from an independent site which worked and I registered, my first ECG reading failed for half a day because the instructions were so vague, I selected the 6L setting because that was what I bought and it failed because the 2 finger pad only works on Kardia 6 not the L version which needs a third contact on the back of the sensor.
The graph it produced was unreadable on my phone so I downloaded it to a pdf which was also hardly readable on the phone, I did notice that there was no calibration on the graph of blood pressure or time so the graph was meaningless.
So far Its a waste of money and time and I'll stick with the simple wrist monitors which are more reliable and easy to use.
31 March 2025
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustrating setup experience. We want to help clarify a few things to get your device working smoothly.
First, the Google Play Store error regarding device limits is a Google account restriction, not an AliveCor setting. We highly recommend only downloading the official Kardia app from the Play Store or Apple App Store for safety and correct functionality.
Regarding the readings, the KardiaMobile 6L is an EKG, which measures the electrical activity of your heart. It does not measure blood pressure, which is why that data is not on the graph. The PDF grid lines represent time and voltage, which is the medical standard for EKGs. Additionally, your 6L device can actually take two types of readings: a Single-Lead EKG (using just your fingers on the top two sensors) or a Six-Lead EKG (using your fingers and placing the bottom sensor on your bare knee or ankle).
We would love to help you get everything set up correctly so it is easy to use and read. Please call our consumer support team directly at 855-338-8800 so we can walk you through the process step-by-step!
AVOID
AVOID. THE WORST CUSTOMER SERVICE EVER. POOR PRODUCT. DO NOT WASTE MONEY ON DOCTOR REVIEWS EITHER
12 March 2025
Unprompted review
Reply from AliveCor
We sincerely apologize for your incredibly frustrating experience with our product, the clinician review service, and our support team. This is absolutely not the standard we strive for, and we want to make things right. Please call our consumer support team directly at 855-338-8800 so we can immediately escalate your case and address your concerns.
Only work a couple of times
Only work a couple of times. Junk save your money!
7 March 2025
Unprompted review
Reply from AliveCor
We sincerely apologize that your device stopped working after only a few uses. We understand how frustrating this is, and we stand behind our products. Often, a quick battery change or a simple Bluetooth reset can resolve this immediately.
We want to make this right. Please call our consumer support team directly at 855-338-8800 so we can help troubleshoot the issue or evaluate your device for a warranty replacement if it is faulty.
KardiaMobile 6L works well in the DUSTBIN
I brought a KardiaMobile 6L from AliveCor.
If you connect the KardiaMobile 6L to your (Dustbin). It may work, you could try connecting It inside of your trash bin, it will work.
In other words AliveCor sent me a second hand rubbish contraption device, which broke down after one attempt. It is a rip off device, it needs to go to the trash tip.
AliveCor, will not give me a refund neither for the Kardia care.
The device is a con.
RUBBISH DEVICE
17 November 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for your frustrating experience and that your device stopped working after a single use. We want to assure you that all devices shipped directly from AliveCor are brand new, but we completely understand your anger if you received a defective unit.
We absolutely want to make this right and investigate why your refund request was denied. Please call our consumer support team directly at 855-338-8800 and mention this review. This will allow us to immediately look into your account, review your KardiaCare and hardware refund status, and ensure you are taken care of properly.
Two failed devices, no customer service, poor quality product
I have had two of these. The first had a faulty electrode, which they kindly replaced. The second I had for 3years and the battery needed replacing. This is where the issue came. I replaced it and now it doesn’t work at all.
The concept is great, but the quality and build are poor. I completed all the steps to reboot it. I contacted customer service for help. They simply said you are out of warranty. Nothing else. No discounted offer to replace like other companies do.
I am so disappointed. Be prepared unfortunately to spend the money for a one off product which when fails, will mean you are required to purchase a brand new product all over again. It seems wrong when they have such a product designed to help people?
I would sadly not recommend this.
8 February 2025
Unprompted review
Reply from AliveCor
We sincerely apologize for your frustration. Having your device fail right after a battery change and receiving a dismissive response from our support team is incredibly disappointing and not the level of care we strive to provide.
While your device is outside the standard warranty period, we want to review your case to see if we can help troubleshoot the battery issue or offer a better solution. Please call our consumer support team directly at 855-338-8800 and mention this review so we can take another look and help make this right.
Avoid at all cost
Purchased a product that was not fit for purpose and the returns protocol is absolutely diabolical. They just do not reply to emails, have no returns address and are impossible to contact by phone.
Avoid at all cost.
6 February 2025
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustration you experienced with our returns process and the delays in communication. We understand how stressful it can be when a product isn't the right fit and you are waiting for a response.
We have reviewed your case and can confirm that your device order has already been fully refunded. Depending on your bank, it may take a few business days for the funds to reflect on your original payment method.
It is never our intention to make returns difficult, and we are actively working to improve our email response times so this does not happen to future customers. If you have not yet seen the refund post to your account or need any further assistance, please call our consumer support team directly at 855-338-8800.
Poor Quality & Customer Service
My device was only used little and kept stored in a padded case. When I needed it it would only read “unreadable: device interference…try again”. I did all the suggested troubleshooting to no effect. I contacted support and they didn’t read my message so I tried contacting again. Their response indicated they’d completely misread (or not read at all) what I’d written. I tried contacting again and got a message saying “sorry for delay… we’ve had a much higher than normal call/email volume”. Undoubtedly lots of upset customers. Am continuing to try but there’s clearly product quality problems and customer service is not at all satisfactory.
1 January 2025
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustration with your device and the poor communication you experienced with our support team. We understand how irritating it is to receive unhelpful responses after taking the time to do the troubleshooting steps yourself.
We would like to clarify that the "higher than normal volume" message you received was because you were reaching out during our busy holiday season, rather than a spike in product defects. However, that certainly does not excuse our team misreading your initial messages, and we are very sorry for that lack of attention to detail.
I cancelled my subscription and they…
I cancelled my subscription and they continued charging me, then refused to refund me. Do not trust this company. Also, if you call for customer service they don't care at all that they're ripping you off. They sound like robots and complete sociopaths.
12 December 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustration regarding your subscription charges and the deeply disappointing experience you had with our phone support. It is never our intention to make you feel unheard or disrespected, and we take your feedback about our team's communication very seriously.
We also want to provide some clarity regarding your billing. Please be assured that we do not, and would never, reactivate a customer's subscription after it has been canceled. If you continued to see charges, it is most likely that the initial cancellation process was not fully completed or confirmed in our system.
If you are still in need of assistance, please call our consumer support team directly at 855-338-8800 and ask to speak with a specialist.
Kardia needs to work ALL the time
Kardia caught & helped to diagnose my sporadic afib & tachycardia caused an unpredictable autoimmune disease. I took my Kardia on a holiday visit to see family. It would not work ever. I searched and searched to no avail. It could have been disastrous results for me. My BP plummets to 70/50 and my HR HIT 200+. All I got from my device was "no signal". ??
5 December 2024
Unprompted review
Reply from AliveCor
We are incredibly sorry to hear about this terrifying experience during your holiday. While we are glad to hear the KardiaMobile previously helped diagnose your AFib and tachycardia, having the device fail to connect and display a "no signal" error when your heart rate spiked is unfortunate.
A "no signal" message usually indicates a depleted battery or a connection issue with your phone (such as Bluetooth needing a reset or microphone permissions being blocked), but in a critical moment, you need a device you can rely on instantly. We want to investigate what happened and make sure you have a fully functioning, dependable device going forward.
Please call our consumer support team directly at 855-338-8800 and mention this review so we can immediately troubleshoot this issue or replace your device if it is faulty and still has an active warranty.
So sorry I wasted my money
UPDATE 2: AliveCor asked me to email them with a copy of this conversation which I did immediately. Their automated system replied with a case number. A week later, still nothing from them. I called and an agent told me "oh, it might take 24 hours." I replied that it's been a week. She had nothing to say. I requested speaking to a supervisor and was told none are available. I stand by my original review. HORRIBLE COMPANY! They are probably GIVING HEART ATTACKS not saving people from them!
AliveCor - review case (#1159681).
UPDATE:
I see that after 1.5 YEARS you replied! I called and after being on hold 10 minutes, hung up. If you want to help, please post a link where I can get a return-postage paid envelop to send it back to you for a full refund.
~~~~~~
So sorry I wasted my money! Whenever I feel tachycardic and use Kardia, it tells me unreadable. I can be in the exact same seat and use it the same way when I feel fine and it works. This has been consistent almost a year.
I called the company and they cite "many variables including how moist your fingers are or how much pressure you are using to press on the pads" -- it isn't rocket science and should not vary within a 10 minute period.
14 October 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the long delay in our response and the frustration you’ve experienced with both the device and our phone support. We understand that "unreadable" results are particularly stressful when you are feeling symptomatic.
Sometimes, a specific device or its signal processing simply isn't a good fit for a user’s unique heart rhythm during tachycardic episodes, and we want to ensure you are not out of pocket for a product that doesn't work for you.
Please email us at support@alivecor.com and mention this Trustpilot review along with your Trustpilot username. This will allow us to locate your support ticket immediately and reach out to you directly with a return-postage-paid label and assist with your full refund.
Unuseful to check aritmia on android, never worked
I was always unable to register my bite. They also stop to support my phone, it was in a list of supported phone.
Then they told me that want to give me a refound, but they want to have back the recorder? Why? You have to give me a refound because you removed my phone from your list after a little time that I had bought that.
4 August 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustration caused by your phone model losing compatibility and the issues you experienced during registration. We understand it is very disappointing when a device you purchased no longer works with your phone.
We also understand your annoyance regarding the return request. To clarify, requiring the physical device back is a standard procedure to process any hardware refund, regardless of the reason for the return. We just need the physical unit back in our inventory to finalize the transaction and return your money.
We want to make this as easy for you as possible. Please contact our support team directly at support@alivecor.com or call us at 855-338-8800 so we can provide you with a return label and get your refund processed immediately.
I recently purchased an AliveCor…
I recently purchased an AliveCor product, expecting the quality and reliability they are known for. However, my experience has been far from satisfactory. The device emits a high-pitched noise that is even worse than tinnitus, making it unbearable to use. This critical flaw was not disclosed to buyers, which is both disappointing and misleading.
As someone who relies on accurate and convenient health monitoring, I am extremely frustrated by this oversight. The constant noise not only disrupts daily activities but also undermines the purpose of the product. I hope AliveCor addresses this issue promptly and provides a solution for affected customers. Until then, I cannot recommend this product to others.
18 July 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the discomfort. The standard KardiaMobile communicates with your phone via an ultra-high frequency audio signal. While most adults cannot hear this frequency, some people with sensitive hearing can.
Our KardiaMobile 6L device connects via Bluetooth and operates completely silently. Please contact us at support@alivecor.com or 855-338-8800 and mention this review so we can help you return your current device and discuss switching to the silent 6L model.
Device stopped working after first…
Device stopped working after first battery change. Support only interested in warranty!! Avoid.
6 July 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the frustration. It is disappointing when a device stops working after a battery change, and we’re sorry if our support team's focus on the warranty felt dismissive.
We want to make this right. Please contact us at 855-338-8800 and mention this review so we can escalate your case, help troubleshoot the battery issue, and find a better solution for you.
Got Horrible Experience / Alivecor Financial Problems
Got in contact with customer support because I needed to buy a protection case for the Kardia Mobile 6l.
According to Gloria Gonzales, they are shutting down their products. Except the new very expensive 12 channel ECG. It seems they have huge financial problems, they are even not able to provide support for their existing products.
If I would be Investor of them, I would not invest even one more Penny!
3 July 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the confusion and any misinformation you received. To be clear, AliveCor is not shutting down our products. We continue to fully support and sell the KardiaMobile, KardiaMobile 6L, and KardiaCard, and we remain the leader in personal EKG technology.
Regarding the protection case, while specific accessories may occasionally go out of stock or be refreshed, our core devices are very much part of our long-term mission. We would like to clarify this with you and help you find the accessory you need. Please contact us at support@alivecor.com or 855-338-8800 so we can correct this and assist you further.
Following up on my previous review…
Following up on my previous review where I was told I would be charged for the appointment that they did not keep, I was billed 6 times on my credit card. That is $414 for one $69 appointment that they did not keep. I am dealing with this thru my bank. BEWARE OF THIS COMPANY
1 February 2024
Unprompted review
Reply from AliveCor
We sincerely apologize for the significant billing errors and the frustration this has caused. We understand how alarming it is to see multiple unauthorized charges on your statement.
Our billing department has investigated your account and can confirm that all six charges, totaling $414, have been fully processed for a refund. Depending on your bank’s processing times, you should see these funds reflected in your account shortly.
We take these issues very seriously and are reviewing what caused this error to ensure it does not happen again. If you have any further questions, please contact us directly at 855-338-8800.
They are outright LIERS
They are outright LIERS. There is no such thing as a "medical grade EKG except an EKG done by a professional Doctor or Tech. There are 12 different parameters involved that must be interpreted by a pro. When I told my Cardiologist's nurse about a reading she made fun of the whole idea! ALSO, they say it's the FIRST such thing. I bought a SonoHealth EKG monitor years ago at Amazon, before THEY, even advertised one. These things are a quick indicator of POSSIBLE trouble. Do NOT trust your life to one!!!
25 January 2024
Unprompted review
Reply from AliveCor
We appreciate your feedback and understand your skepticism, as heart health is a serious matter. We would like to clarify that "medical-grade" refers to the fact that our devices are FDA-cleared and have been clinically validated in numerous peer-reviewed studies to accurately detect arrhythmias like AFib.
While a 12-lead EKG in a doctor’s office provides more data points, the KardiaMobile (Single-Lead) and KardiaMobile 6L are designed to capture medical-quality data in the moments you feel symptoms at home—data that can then be shared with your physician for professional interpretation. Regarding being the "first," AliveCor created the first FDA-cleared personal EKG over a decade ago.
We always recommend using our devices as a tool to supplement, not replace, your doctor's care. If you have further questions about our clinical validation, please contact us at 855-338-8800.
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