HRV4Training Customer Service

HRV4Training Positive Reviews

Just for cycling??I’m frustrated because I’ve been using this app for years now and I really like it in a lot of ways but what’s with the clear cycling bias?? I know that you can add more then just cycling to your workouts but literally every single app that can be connected is a cycling app. Do you guys not understand the value of strength training or muscle growth? Do you not understand the amount of impact heavy deadlifts had on your HRV? Why can’t I mor directly track my weight training? RPE is the only way I can do that? Come one!.Nathanjs1703Version: 8.2.7

Supplements Watch Data for Managing Chronic Health ConditionsI supplement my Apple Watch data with this manual HRV reading every morning to monitor my parasympathetic system that's affected by a chronic neurological health condition. I've taken my reading every morning for more than a year under consistent conditions, same finger on the camera at the same time every morning prior to any external stimulants like food, coffee or activity, and I find the reading to be an accurate predictor of how I'm going to feel and fare for the rest of the day (low parasympathetic frequency means my body is struggling.) I've also had times where my HRV reading is super low but I feel fine and I think pffft this thing is off, and then I come down with a virus three days later, proving again that the HRV app knows if I'm sick before I know I'm sick!! I've taken measurements with this app while simultaneously checking heart rate with both an oximeter and my Apple Watch, and HR has been accurate so maybe those reviewers who had accuracy issues had older phones. Even my doctors find this data fascinating, since the correlation to my neurological symptoms has proven time and again to be accurate. Another great tool to have in my health management toolbox!.Vuitton.fanVersion: 8.4.1

The best app out there for HRV!What can I say I’m impressed. I’ve tested and downloaded several other HRV apps but they either required an external or didn’t support the new Apple Watch feature that supports HRV. Even though this app doesn’t support the Apple Watch either, it still offered the ability to use my existing iPhone. Don’t be fooled, the iPhone camera works just as great. I used to use the camera for other things to measure HR and I found it to be just as accurate. The HRV was spot on at least referencing against the Apple Watch readings. As for the app, there are some bugs that I’ve worked with Marco to resolve so while minor he has worked with me. I do acknowledge that most of these HRV apps tend to favor runners, cyclists, or triathletes. Fitness and CrossFit folks are just as interested in peak training. Remember us too! Lastly, the insights are great and this is the kind of easy advice I was looking for. Integration with other apps to include Strava and Training Peaks is a plus. A negative is the inability to get into the weeds with your data or edit but I just found out they have a Coach app that will allow you to do that and I might have to investigate that! Overall very impressed and hope they keep developing this app..BeekaytabVersion: 6.9.5

It’s not the training it’s the recovery that countsI’m loving this app!! Deceivingly simple to use. Incredibly useful insights. To get this level of physiological insight for $10 bucks is simply AMAZING. The fact that it can all be done with the phone you already have is downright awesome. Hats off to the developers!! Athletic improvement comes from stressing the body and then allowing the body to recover and adapt. The whole point of training is to give the body the maximum amount of training stress it can recover from before the next workout. But how much is too much? Training and life stress can accumulate in quite unintuitive ways. Especially over time. That’s what this app helps you to understand and it does it with a direct measurement of your particular physiological “state”, and then tracks that over time. I linked it to Strava and Training Peaks (super easy) to pull in workout data and now have a single point of reference for monitoring fatigue. Just great. If you want to optimize your training time and efforts this is absolutely the app to get. Incredible value for the $$..NYC TechieVersion: 7.3.9

Amazing App for Monitoring Your Health and StressI am now a two year user of this app. Initially I used this app and two other HRV tracking apps, but have long since deleted the others and rely on this and Marco’s HRV Logger for HRV. I’ve used it with the camera, a Polar H10 strap and now in combination with an Oura ring. Always accurate results, but more importantly, solid training perspective on how ready I am to really push myself. The app seems to know my readiness to perform better than I sense it myself, which I find amazing. Only improvement I can think of is that it needs a category for athletes older than the “50 and older” for those of us very senior athletes. Best HRV app available..HawaiiMarkVersion: 7.7.7

Best HRV app and protocolThis is the best way to implement HRV. It’s not the easiest way, you have to take an intentional action every morning. But I believe it’s the best way. I don’t actually know yet how important it is to my training, but I do believe the data is good, and I think that down the line I will be happy that I took the opportunity to collect it. The founder Marco Altini is brilliant, and it feels very much like he is involved every step of the way. Follow him on twitter (X) and you’ll learn so much. He’ll even answer your questions directly. Highly recommended if you want to better understand HRV..YoungdavevtVersion: 8.3.9

A Great Training ToolI recently began training for an Everesting attempt and decided to begin tracking my training readiness more closely. This app is highly endorsed by some of the best minds in endurance training (Dr. Stephen Seiler, Alan Couzens, M. Sc.) so I decided to give it a try. I’ve been very happy with it! I’m a data guy, so I geek out with it daily. 😁 It gives me a comprehensive view of my resting heart rate and HRV trends, as well as a recommendation on how hard to train that day. And with all the additional metrics provided under “Insights” it gives me a really comprehensive view of my training load and overall fitness..M_D_OVersion: 8.3.3

Cool idea, excellent metrics, terrible executionThe ability to measure with a Bluetooth HR strap has degraded significantly. Seriously, Healthnis recording my HR at 54bpm right now, and HRV4TRAINING is showing 154, 99,167, 44, 138, etc. at the end of the measurement “signal quality not optimal, please try again later”. It all worked flawlessly until the developer started pushing their “pro” website. Now it is almost impossible to get an “optimal reading”. Given the significant investment in time you have to put in to get information out, the readings should not be impossibly finicky. I’ve compared performance to an Apple Watch, a Garmin Fenix, and Elite HRV app. None are as finicky in getting a good reading as HRV4TRAINING has become..SsalboVersion: 7.6.8

Indispensable training toolI’ve been using HRV4Training daily for almost a year now to track my heart rate and many other aspects of my health, life, and training. The app has become an indispensable part of my training process. HRV4Training is based on reviewed, validated research, and Marco uses his personal expertise and his experience as a serious runner to make the app focused and effective. His blog posts about the workings of the app and the science behind it are a tremendous resource. And he’s been unbelievably available in answering questions and helping me fine-tune my usage of the app..NormanclydeVersion: 6.9.8

Pillow HRVThis app requires an investment in time. And the ROI when using the camera as your sensor isn’t great since the measurements are not repeatable and are highly suspect. Yes I’ve studied the blog post on using the camera. Back to back measurements under the same conditions result in a range 7.1 - 8.5. Heart rate is reasonably close to what Apple Watch reports. App is good at manufacturing a signal from the noise. Too good. My pillow and bed sheets have scored 9.1, 9.5, and 12.3. Bpm tends to be way off at 2-3x actual and fluctuates wildly when I suspend phone above the bedding and the signal looks nothing like a heartbeat. Still, app reports good and optimal signal quality when camera is aimed at goldenrod colored sheets..RRhinosVersion: 7.3.9

Love/Hate RelationshipThis app has changed my training for the better. I know I recover unusually quick but it’s hard to convince your coach without the data. This app has allowed me to train smarter and harder and on fewer rest days. The past two months, I’ve had a suggested take it easy day and it was spot on with how mentally and physically tired I was. However, the days when you get the ok to push hard is the best feeling. I love this app but it holds me accountable to really push or pull back when needed (hence the love/hate relationship)..CorkydoestriVersion: 7.3.6

A fantastic toolThis is an amazingly useful app for tracking your HRV. In particular, this app unlocks the ability to collect HRV for anyone with an iPhone. HRV is a fantastic biofeedback indicator that everyone should be tracking. Especially now during the Corona Virus outbreak, I monitor my HRV daily for signs of immunity imbalance, as part of an advanced biofeedback monitoring and supplementation regime, so I can take steps to not get sick. Accounting for other variables that contribute to reduction in HRV, I’ve noticed I can get at least a 12-24 hr warning signal in advance of feeling symptoms. The app does require some diligence taking your HRV readings and grabbing them from Apple Health. Apple doesn’t make it easy and clearly hasn’t figured out how important HRV is yet. But that’s not the developers fault. I personally take readings using my Apple Watch, and do a 3 minute session with the breath app to get the HRV reading..X-trainVersion: 7.6.2

Changing Review after frustrated uploads.I’ve been tracking my data for 14-15 months now. My workouts are uploaded from Training Peaks or Strava, but those apps lean heavy toward triathlon training. I am not focused on triathlons, so many of my workouts do not register in Training Peaks and therefor do not register on HRV4Training. Also, hard to recognize overall or individual sport body-stress/recovery as HRV4TRAINING doesn’t separate different daily workouts. (If you run and then later in the day ride a bike, HRV4T registers it as a brick Run/Bike workout - not always the case). Considering seeking a new platform..The big swedeVersion: 7.2.7

Good for a baselineThe app is good for a baseline and general idea of HRV. I do find it to be accurate and convenient to use. I try and use it as soon as I wake up before I am out of bed in the morning. I think being consistent in time of day and with how you position the phone is essential to getting a good measurement. I wish you could do multiple measurements per day (AM and PM). Overall a good app!.SRock240Version: 7.4.7

Important fitness companionThis app has been a phenomenal resource for me as I venture into higher levels of fitness. Being able to track trends and know when it’s time to push harder or take it easy is tremendously valuable. This app isn’t for someone that just wants a friendly motivator to work out, it’s for someone that is already motivated and wants another tool to continue to improve their fitness..Erik is the ManVersion: 7.9.3

Easy, lots of insightsThis app has helped me understand fatigue levels in ways I’ve never seen before. That’s the stated goal of the app. Even better, I’ve been pleasantly surprised at how it has also served as an accountability tool. Just by using it I’ve done other things to improve my sleep, which then gives more accurate HR readings the next morning. Definitely try it and if you need help interpreting the more complicated metrics then get a coach for a while..400 IMerVersion: 6.9.5

Performance of app and supportI don’t usually write reviews but the performance and support of this app is so above normal that I think it deserves noting. Along with supplying an app that works very well, there is a full complement of links to connect you to the technical literature on the metrics that are being measured. You don’t need it to use the app but it’s there if you want. And it’s current research, not just random things from 5+ years ago. The support is also outstanding. I had a small problem with the camera and got feedback in an hour that solved it. These are serious people that provide links to the latest in fitness research and support an app that provides potentially very useful biometric feedback on where your body is at in your training cycle. Get this app. It’s very good..JesuisichVersion: 7.4.2

Love thisI was skeptical that a camera heat rate app could measure my HRV reliably, but given the lack of other means to do so right as I wake up in the morning, I decided to gamble on this app. I'm not disappointed at all. I've found it to accurately identify when I'm not quite up to strenuous training, a few times telling me when I didn't know (I ran anyway and performed terribly). I live and train by numbers, and this app has provided me another great metric to aid me in my running endeavors..LightAxeVersion: 6.9.3

Very comprehensive and usefulI’m very impressed by the insights obtained with this app. Every morning it suggests whether to train as planned or to take it a little easier based on my HRV. I have found the suggestions are really helpful as I tend to train too hard sometimes. I also really like the algorithm it uses to calculate VO2max. I find it more accurate and reliable than what the Apple Watch uses..LnblmtVersion: 7.9.1

10 days of use and I’m pleasedA doctor recommended this to me to use with the camera sensor. So far it seems to correspond to my heart rate on a garmin fénix and also to my fatigue and stress level. The graphs are easy to understand. I haven’t had enough measurements to comment on the analysis feature. I wish it had the ability to take multiple readings during the day to taker a finer look at how exertion, foods, and stressors effect you in real time..MorecharactersVersion: 7.6.0

Useful & value richThis app has been a daily companion of mine for many months to help me determine the optimal intensity of my workouts. I’ve used many devices that measure HRV and I find this quick and easy to use. I would also like to add that customer service is unsurpassed. Marco is incredibly responsive and helpful. Highly recommended for those who want to track HRV as one measure of physiological readiness..MikehihzVersion: 7.5.5

Great tool for every athleteI used to rely purely on HR data however I would still get injuries or sickness seemingly out of nowhere. It turns out that If you train hard your HR can be lower OR higher so you may not be recovered when you think you are. Since using HRV I’ve been much better on my recovery and been improving for the last 4 months without any setbacks. Kudos to the team behind this awesome app!.MountainTruckerVersion: 7.1.4

Long term userI have used this science-based app for years using data from my Oura ring. It has helped me recognize patterns in my responses to diet and exercise and to recover from injury and illness. There have been some glitches on occasion. The developers respond to requests for help within 24 hours and fix problems promptly. Exceptional app and developer..Z profVersion: 8.3.8

Awesome Support ResponseOver the last couple years I’ve found it necessary to contact support only twice when I upgraded to a new iPhone. Marco responded to my questions within hours on one occasion, and literally a few minutes on this recent occasion. The response was not only super fast, but with suggestions that worked to solve my problem..BIllyMc2011Version: 7.1.7

Great HRV solutionI did a little research before choosing this as an HRV tracking/monitoring solution, and feel it is the perfect option for me. I am constantly finding more data and insights available within the app, beyond what is required for simply knowing whether it’s a good day to “train hard” or not. The maker/founder seems reputable and the app itself is very well designed..JdwyaVersion: 7.2.1

Learning so muchI’ve only just gotten started collecting data with this app but I am already leaning so much and finding it all so interesting. At first I felt a little bit overwhelmed by all of the options for analysis but it looks like they unlock at different times as enough data is available. I’m really looking forward to digging into it all..SeasadieVersion: 7.2.4

Great Even For Non-Elite AthleteI’m a moderate exerciser, walk, hike, weight lifting, yoga, Pilates, but I tend to over do on occasion and wreck myself. I’ve been using this App since it first came out almost every morning. It will advise to either Proceed, Limit Intensity, or Take It Easy. I’ve learned the hard way to follow the advice and have avoided injury or sickness. Very easy to use..Nicky820Version: 8.0.6

Simple, Reliable, HelpfulThe title says it all! The app is simple to use, without being tethered to it or having to commit to a wearable. The reliability of the app’s data presentation makes me trust the science behind it. And, most of all the app is so so so helpful in planning training and understanding my body’s fitness. Thank you for such a fantastic app!.Monoceros89Version: 8.3.0

Best HRV app out thereThis one really simplifies things for you after you get a baseline for yourself. However, it has the depth to really dive deep into if you are into it. Simply take a reading when you wake, (only save quality readings, if it says that it’s not reliable, take another) answer a few questions and that’s it!.AdamsrunsVersion: 7.5.2

The right fitI have found the frequent updates, add ones and enhanced functionality to be in line with what I’m looking for from an HRV app. I would and have been recommending this app to anyone I interested in knowing how their HR variability is doing as it is the BEST indicator of overtraining available. Great app, easy to use and always improving - whats not to love..Ejl32Version: 7.3.0

Great app for serious trainingSuper interesting to follow the metrics. Having some problems with it reading and writing from/to Apple Health. Still haven’t gotten it working fully, but the devs have been very responsive and helpful, which I appreciate. Hope it gets figured out..Djc0Version: 8.3.2

Difficult to readDon’t know why they turned background black, makes info so difficult to read, font small too. Would use it more if it was more user friendly as info looks Interesting, but black background makes it almost impossible to read. And why isn’t it integrated with Apple Watch after all this time?.Ward0838Version: 7.9.4

Measurements unreliableI’ve followed the directions for measuring HRV on the phone carefully but I don’t feel I can trust it. Sometimes I get two wildly different numbers measuring back-to-back in the same position. Other times I’m not moving my finger at all but halfway through the measurement it will tell me I need to reposition my finger, and do this about five times. I have an iPhone 13 mini..Miki runnerVersion: 8.1.9

HRV4 MetricsOne of the best training assistance tools that I’ve used. It takes time to build up all of the information that the app needs to help track training evolutions, but the process helped to keep me on a regular schedule as I prepared for upcoming events. A great method for tracking a range of objective and subjective information as I train..LongRyderVersion: 7.1.9

Stopped WorkingThe app read my HRV for about 2 weeks before it stopped working. It reads for about 30 seconds then has me start over and doesn’t provide final results. This has been an issue regardless of how many times I’ve done it over. Wouldn’t recommend if you’re looking for something long term..Haro!!!!Version: 7.7.9

The Best HRV App for looking at trendsAfter having tried a bunch of the HRV apps, this is definitely the best. Not only does it work consistently, which cannot be said for other apps, it is by far superior on being able to see trends over time..5(👍)6Version: 8.1.9

Great appMarco has done an amazing job creating a platform and human interface to measure an important physiological metric: heart rate variability. It has changed how I look at the whole spectrum of stressors in my life and how to eliminate them or shape my athletic pursuits around them. Bravo, Marco, and thank you..AMC2727Version: 8.3.0

Do not take all workouts into account *Fixed*The app retrieve only workouts as biking or running. So when you are mostly training at the gym the charts are almost useless because the app never gets your HR even you are wearing an H10. You can enter the total TSS manually but in that case you cannot differentiate sports. So if you have done biking, rowing, spinning and dancing the same day, you’re screwed. The basic feature is working fine, but all the insights are useless if your doing something else than biking or running. Edit: The app is since the last update importing all workouts from TP, even categorized as *others* which means you no longer have to manually calculate your daily TSS to get your overall score. This is much more comfortable and accurate since all the workouts end up listed. However there’s seems to be a bug since the total time is incorrect, it takes only one workout into account and I have to manually calculate it, this part is probably coded as a separate and not updated method..ZangdaarrVersion: 7.2.7

Super helpfulLow cost tool with High value...BoriskogVersion: 8.2.2

Questionable accuracyI’ve been using this app for over a year and it seems great. As long as you stick to one measurement. I have the recommended polar chest strap and measure for 2 minutes. Sometimes if I get a reading that’s higher or lower than usual I’ll immediately take a second reading and often the HRV number will be different than the first, to the point where it won’t even give the same advice. I’ve also experimented with the camera measurement and my HRV was always significantly lower. For the price of the app, it’s fine but I would never pay for the premium service. Also if you want to see your heart rate data from your workouts in the app you will also need a premium Strava subscription..SgkltVersion: 8.1.6

Probably the best option.I would recommend this app to everyone. I sold my whoop to use this app and even though I just bought a new garmin watch I still take my reading in this app and camera every morning. It's funny how this little app seems to do more than what these huge companies can do..AndrichukVersion: 8.1.0

User for over a year. Really solid training toolI track my HRV every morning and use it to base my training off of. Has been really helpful to see the effects of training load and prevent overtraining.Mr. CleVersion: 8.0.5

Like this app but doesn’t consistently workLove it but finding it super frustrating. Seems like most day it takes me forever to get a reading. Today I gave up as after 15 min, turning app on and off multiple times ( which usually works) still not working..DangerousGoodVersion: 7.7.9

Easy to use and understandGot it based on the recommendation of a national cycling coach friend of mine. Have not been disappointed! I’ve been using it for just over a month now and really helps me understand how I’m feeling. Highly recommend!.CanadaFanVersion: 7.7.9

Best app on HRV appI have used as a coach with athletes for endurance sport for many years. It works very well and is a low cost solution . It is research validated and syncs with training peaks . The ability to add notes and subjective measures to hrv/hr makes it superior to many other apps.Glas1220Version: 7.7.7

No need for Oura or Whoop!I have been looking for something to help me with my training and four months I have been debating the loop and the aura ring. Luckily I found this app it is exactly what someone with an Apple or Apple Watch needs! I’m not even a month into it and it’s already starting to learn how I train and provide guidance to optimize my training. And with the latest upgrade to take in Apple Watch and health data it’s even more useful. Don’t be scared by how much it cost it’s worth it!! I have paid for & tried pretty much every HRV app available and this is the only one that now lives on my phone. The only thing that could make this app better would be if it took the sleep data from your Apple Watch combined it with the HRV data and gave you recovery and training guidance..ID DubbsVersion: 7.7.1

Really good AppBeen using the apps for 2+ years, solid and a must have if you value your training and physical condition.!MartinVersion: 7.7.1

A must for endurance athleteThat app was a game changer for me like a runner. It helps me to adjust my training cycles and place my intervals session in the week..Alex RicardVersion: 7.6.8

One of the bestI’ve tried several HRV apps and the developer really did their homework on this one. Lots of customization options and as technical or non technical as you’d like to get. Also amazing service and quick response with questions or trouble shooting. Product works great! Thanks.IMCraig13Version: 7.6.0

Very helpful app for monitoring HRV and trainingI've been using this for a few weeks now to measure HRV and my training. It nicely integrates with most platforms I use like Strava and Apple Health, and provides me with a helpful measure to inform my training. Updates happen pretty regularly with the app too. While I like the app information, I do think some of the visualizations could be improved to better communicate not just the resulting data, but actions you should take next based on the data..BenryVersion: 6.8.9

Awesome app!!I use this app for health purposes (not training per se) and have found the daily results accurately reflect my health status. This has become a valuable tool in helping me predict when I am needing to slow down, rest, or when I can actually push my body cardiovascularily. For those plagued with “crashing” this can add a some reassurance to a life that is otherwise fraught with endless unpredictable challenges. Huge learning curve—not on using the app— but with HRV theory itself, and how it impacts health..CanaryJoVersion: 7.1.6

My Go-to Training AppThis is my go-to training app! It is super accurate and provides loads of useful data if you are serious about performance, or even as a tool to help you get, and then more importantly, stay in excellent shape. It has been so accurate as to provide hints when I’ve needed to back off of training and recover, while I was on the brink of catching a common cold! Pretty amazing software..Ryan_payneVersion: 7.1.3

Solid. Super solid.Good interface with good features. Integration with Strava resolves the issue of only one workout per day 👍🏼. Best of all, and highly appreciated, is the responsiveness: I promote this app to people highlighting the readily open communication when emailing Support. That in itself is huge, plus the app itself is sophisticated and continuously updated..Wordier than thouVersion: 7.0.9

Great HRV app!This app was just what I was looking for! It works great most the time, every now and then the app has troubles reading my HR with the camera but overall it’s very accurate and I’m very impressed!.AlutoeVersion: 7.1.1

Great app for performanceSolid data and interpretation for coaches and athletes. Highly recommend.PdubEWAWVersion: 7.0.9

Works greatNo strap. Tons of info from developer on HRV4Training. Tons of features, syncs with training peaks.12dayweekVersion: 6.9.3

Fantastic App for TrainingLots of data and sends info to TrainingPeaks. Great support from the creators for updates and help..R1nTOVersion: 6.9.3

Simple to useThe app creator has a wealth of knowledge about HRV and his blog is a great read..Dennis LeongVersion: 6.3.8

Absolutely amazing!These capabilities are being sold for hundreds of dollars by other third parties as isolated applications. This app is absolutely brilliant and works flawlessly. The integrations with Strava and other apps are a amazing. In addition to an amazing app, the web site and author a a wealth of knowledge. Their support is unparalleled! Any serious or recreational athlete will benefit tremendously from this app..Adrian VargasVersion: 6.2.9

Great AppI have found this app very easy to use and it provides usefull information on fitness/health trends over a period of time as well as an early warning when your sympathetic nervous system is under stress. The background information provided and support are excellent also..Youngbudd 1Version: 6.8.9

Keeps getting better, encourages me to get betterIt's a great application for training and racing. It's continually improved and makes a complex physiological assessment straightforward. It has pushed me to train harder and I've listened to it for extra rest days when I'm over the line. I gave it -1 star because I've always been annoyed that the daily subjective text input (annotations) don't autocorrect - which is essential on such tiny keyboards..YoinkVersion: 6.5.4

Excellent!This HRV app is Very straightforward to use to record daily morning HR and HRV. It has lots of great built in options to explore the data wrt training and daily other stresses (e.g. Travel). The data set is also exportable too, which is really excellent if you want the raw data to do your own analysis..Mellivora1Version: 6.8.3

Lots of data, great executionDaily use for almost 3 months. Data can be very useful to reflect on how certain training periods went and to some extent can be used to shape future training. This app makes it easy to track what was a traditionally hard to track metric and presents it in a very easy to view manner..SamG5785Version: 6.8.3

Useful!I use it every day.Lukasc11Version: 6.7.6

Great appAwesome app. Camera based reading is much more interesting when I wake up than putting on my hrm strap. Lots of way to see the data, good analysis, and if you look at the app website, you'll see that the author really care and is passionate about HRV.EleclerccaVersion: 6.7.1

Fantastic AppMy brother got me into using this and it's amazing that it can track so much about your day and your outcomes based on your heart rate variability. Highly useful !.Kristof8Version: 6.6.9

ExceptionalI did all the research on every HRV solution I could find before selecting HRV4 training, and so far I'm delighted. It was the blog that sold me as the team clearly shows their passion for ongoing research into the topic of recovery tracking. I do have an external H7 monitor, but after reading one of those blogs I gave up needing the monitor and switched to the camera, with the shortened 1 min test. It took a couple practices to get it to optimal readings, but they had a practice screen until I figured out how to hold it for the best results. Loving the research backed analysis in a clean well designed app. Would love to do readings more than once a day, but as they've spelled out from the research, variability can be high from minute to minute making the once a day in a duplicatable setting approach the most effective for understanding the trends..ShurlockVersion: 6.6.7

Runner/biker/skierGreat app...I do not have an iphone so I use it with a bluetooth HR monitor strap since the camera based method only works on iphones that have a flash. Easy to use and links with strava, sport tracks and other training programs. Provides interesting insights into relationship between HRV and various training metrics..JBxc2Version: 6.6.5

The best HRV tool yetI have previously used iTHLETE and heart strap HRV tools. The great advantage of HRV4training is that you do not require any tools (other than your phone and the app) to measure your heart rate and HRV. Plus it syncs nicely with Strava and TrainingPeaks as well as other activity trackers. It compares your data with other people sharing your gender, age and activity profile. Finally, and most importantly, if you write them a question, they respond immediately with clear guidance..SchuurmieVersion: 6.6.5

Just works-quick and easyNo fumbling for your chest strap in the morning, grab your phone, take a measurement and go. Enough options to play with but the basic settings give me everything I need. Thanks and keep up the good work!.OverJaKKVersion: 5.1.7

I love this app !Not only is it super easy to use, it also constantly gets updated and improved..Saxman789Version: 6.5.4

Excellent app for athletesEasy to use, and very informative. Definitely useful for determining the day's work out, and also indicative of how your performance will turn out..D_everettVersion: 6.4.2

The best App to track your HRVI have tried three Apps to track my heart rate variability. I first tried HRV logger, which is by the same developer. That app is good but as I train competitively as a swimmer and cyclist I wanted specific features that applied to training. I find that this app has the features that I need..Swim, run, skiVersion: 6.4.0

Amazing appI've been using this app to accent my run training for about 3 months now and it keeps getting better and better. Absolutely love this company..Chris.Watkins18Version: 6.3.6

The best HRV app for iOSFantastic app. The go-to HRV app in my opinion. Works flawlessly. Constant development and updates show how much work Marco puts into this! Well worth the money..CanmoremdVersion: 6.2.9

Great training toolThis is an awesome, easy to use tool to help plan training. Use it to train around my shift work schedule. Takes into account not only training but fatigue from working long night shifts..LeryanatorVersion: 6.2.8

Great app from a passionate developerGreat way to track your HRV without the need for additional hardware. If you doubt that it is possible to get accurate HRV data using your phone's camera, then definitely check out the author's blog where he dives deep into the science, and demonstrates his methodology and reasoning. Usage requires only 1 minute every morning, and the data pays off as you collect more and the app is able to compile more insights. Data is also exportable if you want to do your own analysis. While there are a few ui quirks, I am still confident in giving it 5 stars, due to the developer's consistent improvement of the app over the years, and responsive customer support and blog..CommLagVersion: 6.2.8

Best HRV app for daily trackingThis app is the best HRV app for daily HRV measurement for training and general health. Lots of cool features comparing various aspects of physical well being with your HR data. It's regularly updated with useful changes every time. Thanks guys!.TwitztVersion: 6.0.9

Very accurate, most used tool for CyclingI have had every single iphone from day one, $$$ spent on apps and this is the first review I have bothered writing. It has helped my training which I take very seriously. No more guess work. First thing I do every morning. Thank you for developing it. Looking forward for more of your work. I tried the other HRV apps and they are childish compared to this one. You MUST try it..ZariamanVersion: 6.1.4

Great!Fantastic app! Well designed and useful for both athlete and coach. Not just an app for daily HRV but also training stress and well designed analysis. Finally, excellent service/support by the creator who clearly is a scientist as well as designer. Keep up the good work!.EricAC VanVersion: 6.0.7

Marco is bossA great app just hit the top shelf. Great work, sir..HalmosVersion: 6.0

Brilliant!I use this app. I mean i actually use this every day. Other apps are a chore for me. This is No fuss, i own other HRV apps and straps and receivers - this app and the others in the bundle are great value. The data seems as accurate as any other i have used. Support for my questions has been excellent. Check you health - buy this app..Run better faster strongerVersion: 5.1.2

Love itI'm a numbers guy and this app has numbers out the wazoo. The science behind it is, in my opinion, well supported and the outputs from the app correlate well with more traditional HRV monitors (I use a FR910 and Firstbeat). Definitely worth the $$ if you like to use numbers to improve training efficiency. No stability issues for me..Awesome by designVersion: 4.8.0

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HRV4Training Negative Reviews

Disappointing $10They sensor on the Apple watch has been proven to be accurate. (Yet no watch integration) A cardiologist actually laughed at the fact that this app uses a camera. We measured simple heart rate and found this app to be extremely off base. If it uses heart rate as a measurement in the hrv calculations, but it can’t accurately measure that, then how can they claim any accuracy at all? I appreciate the response. Maybe it would be helpful to inform users before they buy the app that to get a true measurement, you need to have a Bluetooth monitor. Also I will add that I did not say anything about the health app measuring hrv. I just said that when i discusses it with my cardiologist, the cardiologist and I checked the heart rate before and after a stress test on my watch and then tried the hrv app with the camera. HRV4Training was very inaccurate. (If I can’t get an accurate bpm from your app (it was generally at least 20 bpm or more off while measuring with optimal connection) then how can it be trusted to measure R-R intervals?.SydneyBristowSuperSpyVersion: 7.1.1

Difficult to use, never seems to workI have an Apple Watch and use both workouts and the Strava app. I’ve experimented with only using Strava to try and get this app to give any useful data, to no end. Giving up on it. Not user friendly, resulting in no useful data. Point in case - the volume of responses to user complaints in the app reviews. They speak to the flawed app design. It shouldn’t require myriad personalized responses. If the app was clearly designed to communicate intent and method, it would be clear that you need additional equipment, that they’re unable to use the Apple Watch because of API restrictions, and that this requires readings to be done in a specific and consistent way (best I can piece together). The frustration and research necessary to successfully use this tool are simply too high for many users. The developers seem to understand the science they’re working with, but not how to effectively communicate about it..ThomaticallyVersion: 7.6.7

Doesn't align with meUsing the camera sensor on an iPhone, I find that my readings are very different than my subjective feeling. On days I know I'm well rested I get very low scores, and on days when I'm very tired I get my highest scores. I wish I could return this app after about a week of use, but since I can't, I submit this feedback instead. Buyer beware. Also, if you're looking to sync with TrainingPeaks, note that it only sends it's proprietary score, not the standard hrv measurement. This may be useful to know if you have a history using other apps or devices. Of course, you can see the standard score on the app, but it doesn't push that number to TrainingPeaks..Trail Runner 1138Version: 7.0.3

Not helpfulI was an early HRV adopter and used a Whoop before they moved to a monthly subscription model. I wear an Apple Watch and don’t really want to add another fitness tracker to that, so I hoped this app would give me a way to track my HRV. I haven’t found it accurate or helpful. The values calculated don’t seem to be even from the same planet as the values I got from Whoop. Despite always syncing my Strava the app never seems to find my workouts, and the information input seems wonky. Sometimes I get the Q&A about my sleep, whether I’m sick, etc., sometimes I don’t. Disappointed overall. Hoping that the next Watch iteration has a built in HRV feature that works for me..JenlawyerVersion: 7.6.8

Grossly inadequate - Not worth the money(yet)After about two weeks of using this app, I feel I have wasted my money too soon and I wish I could have my money back! This app is not worth $9.99 for the following reasons: - Data presentation is not great. You only see one number which is emphasised, however, it doesn’t seem to reflect recovery in real life for me. If you want to see other data like resting heart rate or other calculated parameters, you have to see them in the graph only. At least two or three main parameters can be presented on the main screen. - Most of the other features are not of use. For example, I do not use Strava premium or Training peaks. So it doesn’t use heart rate data to calculate Training load as Suffer score or TSS is not available. I would at least expect TRIMP to be calculated. All I get is Training load with Distance/Duration!!! - You cannot take snapshot HRV readings. You can take only one reading and save it. The app seems to be limited in potential as of now. I would really be happy if I could have my money back..PaulnotesVersion: 7.1.6

Will not sync your health data - you have to start from scratchEven after you turn on all categories for it to interact with Health, it will not read all your HR data. I have a plethora of HR data from a dedicated HR monitor (same one they advertise) and my Apple Watch. I have all of this data stored in Health. But the application won’t read any of it. For $10 this shouldn’t be a difficult concept. It is making me start from scratch for data entry. Even more so, the only way to sync via an external device is to use the Breath app on your Apple Watch. What about the other million data points from my past 600 workouts I have logged or synced in Health. - Not happy with this purchase..Felix CortezVersion: 7.3.9

Requires you to send the company all your dataYou can’t use this app at all without creating an account with them. After buying this, I did then notice it’s in the app description, but it’s literally the last thing mentioned. If you click the “Why do I need an account?” button, it says you need an account so that your data is kept safe, but if you read their terms of service, they explicitly say “We shall in no way be responsible for any loss of User Content or other data.” This is nonsense. The app could keep my data safe in iCloud, and I’d still have my privacy. I’ll be asking Apple for a refund the instant the charge goes through..HosayifVersion: 7.1.6

Should state at the top of the listing that an account is requiredMy bad. I didn’t read all the way to the bottom. Was looking for an app that did not require an account. Also, the reason for an account is lame. You do not NEED to back up my data. Should be optional if you are going to charge for the app. Especially if all collection and processing are local. May not be a blatant personal data grab, but it sure does look like one. I hope the app convinces me that it was worth it, but even if it’s good you look like sheisters to me..ClickfiendVersion: 7.7.7

Sorry I bought thisIt is inconsistent in reading from the Apple watch Breathe app, often telling me there is no reading, when I just took it with the Breathe app before getting out of bed. Using the phone camera isn't much better and often requires several tries to complete. Then there's all those questions to sort through to save it. Then I see hardly any differences, and if truly want to see more than minimal amount, have to pay for a hefty annual subscription..PaddyTCVersion: 7.3.9

DecentThey recently changed the look of the app so it looks like a beta site from the late 90’s. I am not sure either if it just my phone or the app but about half time I run the test it drops the connection mid scan even with the meter registering well an the green light. All in all HRV is a great gauge for recovery and on terms of the app what you put in the daily survey will make it more useful. 2 stars for terrible design interface and spotty reading..KcoonsVersion: 7.9.3

Started ok..then just became to unreliableThe first few months this app was consistent and worked as i dictated for the most part. Given you’re consistent on measuring same time each days and annotating variables accurately. HOWEVER, the last month the app has been completely unreliable. It takes sometimes up to ten different tries to get a good reading. The app constantly crashes and when it doesn’t crash it’s all over the board. I don’t know what changed in the last update but I was border line ready to throw in the towel but now the decision was made for me. At least in my experience I’ll continue to look elsewhere to get HRV tracking. BTW I’m a big data geek. Live my TrainingPeaks platform and Garmin Connect. But HRV is still that missing data point for me..Shawno83Version: 7.6.7

Can you guys update with a fix???I paid for this so I can use my watch and sync the HRV4Training to that. However my watch does not auto read my hrv even when I use the breathe app. So it randomly selects a time to do my readings. And I don’t know when it checks unless I open my heart app. So when I do I find out I happen to miss this by a couple hours. My problem is the HRV4Training app only reads when I manually push the read from health button. It will not capture any reading that’s more than an hour from when you push the button. I haven’t been able to consistently read my hrv to actually use this app for my liking. All I ask is to allow to read the earliest reading from the day. Take out the one hour limit. Please. Or have the app check the health app every other hour or something.EpidonoVersion: 7.4.0

Used to be amazingI had been using this for three years successfully. For more than a month, the app says it has my OuraRing data but there is no display. Reached out to support and no reply. Is this app still supported? Disappointed because as an athlete, this is one of the only HRV apps that didn’t tell me that I was pushing myself too hard every day rather than most that are for general fitness..NatMDVersion: 8.4.2

Waste of money!This application is so convoluted to use and the UI is not user friendly to say the least. I was unable to get a refund for my purchase. And I deleted it after a couple days. ☹️.Kofi3801Version: 8.1.1

Inaccurate, waste of money.Dont waste your money on this app if you dont have a hrm. The camera is unreliable and the readings it gave me were based off false data. Do not buy this app..Sterls12345Version: 7.6.2

Doesn’t seem accurateI have been using for almost a year now and I find now I get “optimal” super low readings or super high readings the first attempt, which makes me take another reading. The second time is almost always in the middle. How can it be accurate if one reading is 6.3 and the next is 7.5. It just seems to randomize the reading. I’d understand if it was telling me the reading wasn’t optimal but when they are how can there be such a variance??.SW3NGYVersion: 7.4.2

Not accurateI loved this idea. I really wanted it to work and was excited for it but when I tested it I found: -That when compared on both another phone and another ipad my polar h10 was way, way more accurate. The difference is so great that it’s hard for me to understand why these reviews are so good.... -holding your finger on the phone camera without moving is surprisingly annoying for two minutes, let alone five. It’s just not better than getting a clip on finger or chest strap monitor..HelmsauceVersion: 7.0.5

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