Reviews - HRV

MP

Mike P.  United States

February 17, 2026

"I didn't get the big increase in deep…"

I didn't get the big increase in deep sleep that I'd hoped for, but I do believe my HRV has improved since I started using it.

ME

Melanie E.  United States

January 29, 2026

"This device WORKS."

This device WORKS - I usually get a 10 point bump in my HRV, plus there's a notable difference in how relaxed I am. It's also way easier to use regularly than Pulsetto. Just slip it around my neck and forget about it.

RS

Ruth S.  United States

December 14, 2025

"Good effect but button issues"

I wear this device all day and think it helps improve my HRV. I do have issues with turning i9t on and off at times where the button doesn't work well.

CL

Caroline L.  United States

Jun 4, 2024

"Great!"

Heart rate has gone right down, which is amazing for me. Cant be without this little device now.

KB

Kevin B.  United States

May 18, 2024

"Improved my heart rate variability a great deal"

I’m suffering long covid which, above all else is utterly depressing. I’m on several medications for long covid symptoms but none of them seemed to anything for low HRV. Since using amofit S, my HRV has increased from an average of 20ms to an average of 50ms. I can the changes to HRV in the iPhone’s health app as measured by my Apple Watch. Better yet, I can feel the difference. I am calmer, more relaxed, less tense and I sleep better.

So it works for me, no question about it.

JS

Jürgen S.  Germany

April 17, 2024

"Verry handy"

I like the amofit S and my HRV values are going up.

UL

Ulrike L.  Germany

March 2, 2024

"Deutliche Steigerung der HFV"

Significant increase in HRV

I've been wearing amofit S for about 14 days now. I charge in the morning and in the evening, so I run the device in calming mode for about 22 hours a day. I have seen a significant reduction in my stress levels during the day and also during sleep. And that was also my goal. That's why I ordered a second one from Indiegogo.

 

Ich trage nun seit etwa 14 Tagen amofit S. Ich lade jeweils morgens und abends, so dass ich das Gerät im Beruhigungsmodus etwa 22 Stunden am Tag laufen lasse.
Ich habe eine deutliche Reduktion meiner Stresswerte während des Tage und auch im Schlaf sehen können. Und das war auch mein Ziel.
Deswegen habe ich nun direkt einen zweiten bei Indiegogo bestellt. 

MM

Meta M.  Netherlands

January 23, 2024

"My HRV is much better, my sleep also"

I'm not easy to convince but willing to try new things. I am watching my sleep results and my HRV for two years now, and my sleep has been not well. I have a lot of stress in my life. From the day I started wearing the Amofit S I slept longer (allthough still interupted, but after interuption I'm not awake for so long as previously) and my HRV is much better. I have a sleeping app that just yesterday said my sleeping Heart Rate dip is much better the last 7 days. I'm still feeling stressed (I hoped this would go away too, but that's still possible I think) but all in all I'm happy I ordered this small device.

EM

Ed Maestro  United States

September 30, 2022

"It is the best HRV improvement tool."

Best HRV improvement tool – Why it’s the best for most people. I have been using this device for almost five months now. I love data and biohacking due to fascination and need. I have spent a lot on wearables. I have to say this should be on your top list. Want to get better? Have something to measure and have something to boost it. You should get something to measure – Reliable fitness trackers, ECG, smartwatches, smart rings. See the objective data for yourself. “What gets measured gets improved.” And it would be great if you got this because this is your booster for your HRV, Sleep, and Focus. There are many products out there for boosting your metrics. But here are my reasons why this is better. It’s easy to use. Minimalism at its best. Very Lightweight. Wear and forget. Less is more – Wrist free, no Bluetooth, no Wi-Fi, no apps, no screens, just discrete buttons. Increased compliance for everyday use. Reasonably priced and cheaper than most. I.e., Apollo, Sensate And finally, results. 

It’s all that matters for most people. I have used PolarH10 via Welltory and Lief for measuring HRV. This works. Although, in my case, it’s more effective on SDNN and not much of the RMSSD part of HRV. But overall improvement so far. Healbe GOBE 3 watch is also indicating stress is more stable (using complex analysis of your sleep quality data and anthropometrical parameters (like weight, height, sex, and age).

For sleep, I have used Philips SmartSleep EEG headband and could see it improved my deep sleep despite sleeping less than 7 hours on some occasions. (In my experience, watches and finger device sometimes misses deep sleep compared to the EEG. So, take it with a grain of salt if you are not seeing any improvements in your deep sleep phase when using these devices since it can stress you out thinking you are not sleeping enough)

From my experience, the effect is not immediate. It’s residual. A session now could provide a benefit a few days after.

Their customer service is fantastic. I had a problem with the unit, and the response was quick. And a replacement was fast. They offer a 30-day money-back guarantee without questions if you are unsatisfied with the effects—nothing to lose here.
* Results can vary and fluctuate due to other factors. I can say that it helps in balancing my metrics. See sample.
https://drive.google.com/drive/folders/1M1h6tXVLnHHKVmAPDVhgKp-7rIhti5eC

JT

Josef T  Czech Republic

September 30, 2022

"My HRV has increased."

In general, it is very difficult to describe and measure any effects. one confirmed one is that my HRV has increased, that is without discussion (apple watches). from a non-measurable point of view, I feel that I am calmer and more focused, but it is a subjective feeling.

I want to test this device on my family over Christmas.

KR

Kapitány Róbert  Hungary

July 26, 2022

"My HRV and ECG levels have increased."

I saw 2 things on myself:
1. My HRV increase from 2 to 3 for long time, after min. 2 hrs/day usage till some days.
2. My ECG PQ increase from 120 to 200 when my Amofit is turned on in my neck and i used more 2 hrs. Then PQ decrease 120 again after turn off the device. But it was one test. On an another test the increase was “just” from 120 to 150.

IM

Ivd Male  Netherlands

July 25, 2022

"My HRV has improved, and I'm feeling more rested in the morning and calmer throughout the day."

I’ve been using my amofit S for little over a month now. Shipping was super fast, and the people at amofit responded to my questions via email within 2 hours.

I have to admit I was a little skeptical, but I became a big fan of the device. My HRV has improved and I’m feeling more rested in the morning, and more calm throughout the day. (I am autistic and suffer from anxiety).

I like the device because it doesn’t require an app or bluetooth connection, just charge it and it’s ready to go. The design is simple, small, and the interface works just fine. Long battery life, I don’t have to charge it often. I am very impressed by the amofit S, would totally recommend.

HM

Helen M McCarty  United States

July 25, 2022

"I am really impressed with this small device’s ability to impact my daily life and improve meaningful metrics like HRV."

I received my Amofit S on July 8th and have been wearing it every day since. I have subjectively noticed a significant decrease in my overall anxiety and emotional reactiveness throughout the day. I feel better able to weather the daily stressors in my life without getting as depressed and/or agitated over them.

I monitor my Heart Rate Variability (HRV) using my OURA Gen 3 ring and have observed a consistent upward trend in this metric since I started using my Amofit S in calm mode 2-3 times a day consistently. This improvement has been a testament to the Amofit S device working for me…as I have not found a way to reliably improve this number other than fasting and finishing my dinner at least 4 hours before bed.

On that note, I have also noticed less disrupted sleep. I have struggled with insomnia and sleep maintenance throughout my life. The Amofit S has improved how restorative my sleep feels and decreased the number of wake-ups I experience during the night.

I have been debating purchasing another Amofit S just so I never have to be without it while it is charging. I am really impressed with this small device’s ability to impact my daily life and improve meaningful metrics like HRV. I look forward to continuing to use it and hope that this technology continues to be improved and developed. Thank you so much for its creation!

Also, a question for the creators. I am curious if the device can be worn backward. I have noticed the green light indicator showing through some shirts or creating a lump underneath my clothing…as I tend to wear the device clipped to my bra. Would the device still be effective if it was worn with the front side against my skin so the green light would be obscured and therefore not appearing through my shirt? Currently, I have just been placing a small square of medical tape over the light so that it is not noticeable under my clothing, but I can still see whether the light is on/off.

EM

Ed Maestro  United States

May 22, 2022

"It has indeed made a lot of positive residual effects on my HRV."

I’m a registered nurse and a father to a toddler. Sleepless nights and stress definitely made my baseline HRV low. I measure my HRV consistently every day at the same time of the day prior to doing anything. I am using PolarH10 (300-RR interval duration for accuracy, ECG type) for the device and Welltory (for multiple types of HRV) for the App measurement. I already have months of data in there and it has already been adapted for accuracy.

I’m so happy with the result I got from using the Amofit S. It has indeed made a lot of positive residual effects on my HRV(especially on SDNN). I also have used a lot of wearables (EEG, FDA medical ECG device, smartwatch, Pulse Ox etc.). This device is a perfect pair for any wearable sensor you have so you can improve your metrics and see the results. Also it's easy to use (discrete, USB-C).