# HRV4Training — user reviews > 449 indexed App Store user reviews of HRV4Training by A.S.M.A. B.V., rated 3.60/5 from 288 ratings. - Source: https://appshunter.io/ios/app/hrv4training/id686923970/reviews - App overview in markdown: https://appshunter.io/ios/app/hrv4training/id686923970.md - Rating breakdown: 5★ 149 · 4★ 30 · 3★ 16 · 2★ 34 · 1★ 59 ## What do users think of HRV4Training? Overall sentiment: neutral **Pros** - 👍 Accurate HRV measurements - 🚀 Straightforward and easy to use - 💡 Provides valuable insights for training and recovery - 👍 Integrates well with other fitness apps - 👍 Responsive and helpful developer support **Cons** - 🐛 Inconsistent readings and technical issues - 🔒 Requires user account and data sharing - 🔒 Concerns about data privacy - 🔋 Drains battery when using camera for measurements **Commonly reported bugs** - App crashes frequently, especially with iOS updates - Syncing issues with Strava, TrainingPeaks, and Apple Health - Camera-based measurements often unreliable or inconsistent **Most requested features** - Allow multiple measurements per day - Improve integration with Apple Watch and other wearables - Add more customization options and data visualization - Expand support for non-athletic use cases ## Newest reviews (17 of 449) ### 4/5 — No metric option *2026-08-04, version 8.6.3* An app that aspires to be a benchmark for HRV testing apps and not offering an option for metric distances and weight is disappointing and cheap. It’s only the US that is behind everyone else, after all! ### 3/5 — VERY GOOD *2026-06-09, version 8.6.3* It would be great if the app could send a notification every morning, im struggling with my consistence because some mornings i forget to use it. ### 3/5 — How to do measurements with newer cameras??! BUYER BEWARE: glitchy *2026-06-02, version 8.6.3* Cool idea but the camera measurement thing seems to work quite poorly with my newer model iPhone. It’s nearly impossible to keep BOTH lenses plus the flash covered for the duration. I would not have purchased the app had I known. Any tips now that the cats out of the bag for this sucker ### 3/5 — Too expensive and bait and switchy *2026-04-30, version 8.6.0* The interface is mid. I was fine paying the 10 bucks for the app but not disclosed in the purchase is you have to pay another 50 bucks every year just to sync to TrainingPeaks! that’s absurd and total rip off. ### 3/5 — 登陆界面一直闪退， *2026-03-29* 评论区也有一样的经历，感觉你们根本没有做优化 ### 2/5 — Not worth the effort to install *2026-03-27, version 8.6.0* Only successful tested once for only one minute. Never again it always stop before completing one minute testing. Waste money and time. Apple should refund me for selling me a product that does not work. ### 2/5 — Kaufversion trotzdem sehr eingeschränkt *2026-02-12, version 8.5.9* Automatisierte Exports nur mit Pro Version im Abo Modell möglich ### 4/5 — Measurement trick for iPhone 17 Pro… *2026-01-26, version 8.5.9* Longtime HRV4Training user (57.5 week average; since 2020) and just purchased an iPhone 17 Pro. With the flashlight/flash moved away from the main fusion iPhone lens by approximately 3cm, there is a trick for the app to work with the new camera lens lens arrangement. The trick is to place your index finger on the closest lens to the flash rather than on the lens in the corner of the lens arrangement. Once I figured this out, the app works consistently (similar to earlier versions). ### 1/5 — Ha ido a peor *2026-01-19, version 8.5.9* Se cierre constantemente y tengo que volver a logarme, ahora no puedo ver mis métricas ### 2/5 — Insights are good *2026-01-18, version 8.5.9* But the app itself could use some help! Particularly the recent bug where it logs you out every time you want to use the app which makes it difficult to use this every morning as intended. ### 2/5 — Not worth the price *2026-01-16* It was great a week after downloading, then it didn’t worked. I tried plenty of times connecting a Polar heart chest strap with no success. Really disappointed ### 1/5 — 闪退用不了 *2026-01-12* 无法使用……信息收集完就闪退。三天内不同时段试了n次都这样 ### 1/5 — Crashes and Won’t Start *2026-01-09, version 8.5.9* App promises a lot but crashes constantly. Apple and the developer refused my request for a refund, so I’m out the bundle price of $14.99. Stay away! ### 4/5 — Hilfreiche Informationen, Fingerposition teils schwer zu finden *2026-01-05* Im Großen und Ganzen gefällt gefällt mir die App und die Ergebnisse die sie mir liefert super. Was teils nur meinen Puls in die Höhe treibt ist, dass die Fingerposition die gestern noch funktioniert hat heute auf einmal nicht funktioniert. Nun mag das subjektiv sein und mein Finger ist wirklich in einer anderen Position, doch das ist nicht immer so einfach erkennbar. Ich empfehle sie weiter. Vielleicht gibt’s ja bald noch ne gute Erklärung was ich da anders machen kann. ### 1/5 — iPhone 17 Pro Max problems *2025-12-22, version 8.5.9* Unfortunately due to the placement of the led flashlight on iPhone 17 Pro models the camera doesn’t quite pick up the signal and fails repeatedly starting over every time. ### 2/5 — HRV insights are fine, but the app needs work. *2025-12-07* Used the app for a bit, the HRV insights are fine, but I was put off by the app requiring that I register an account to use it. The rationale as described on the registration page sums up to ‘You need to register because registration is necessary’. When I tried to delete my account, the app threw an error indicating that I need to send them an email to complete the process. I used Hide My Email during registration which can only be used for receiving emails, so I needed to change my email before I could send them a message. The place where a change email form would be ended up being another log in screen which takes you back to the app start screen. ### 1/5 — Features disappeared behind paywall *2025-12-03* I used to love this app, it had allI that I needed and was my first app used upon waking up. Then the dishonest developer moved TP metric sync behind a subscription paywall… An app that runs off my phone resources is not a service, and I’m not interested in the rest of pro functionality, yet you expect me to pay for it, just to get a function back. Now I find myself with half-working/unusable app that I once paid for… Totally unacceptable! ## Most critical reviews (10 lowest-rated) ### 1/5 — Asking for a refund right now *2026-06-10* Apps is hard to use, even linking with apple watch, this is probably fitting foe someone who loves to take a manual measurement everyday at the same time, someone who is deep into this sort of metrics, but for someone like they are probably better off with something else rather an apps on a phone, in short too complex and manual for an everyday person and fall way short for a pro ### 1/5 — WORST UI / UX & Api *2026-04-27* Garbage ### 1/5 — Cada vez peor cobrando más *2026-03-24, version 8.6.0* Antes pagabas 10€ una vez ( ya los pagué en Android y los volví a pagar en iOS ) , ahora pago 40€ al año para que me sincronice. Además la correlación de datos usando la cámara de un iPhone 15pro o una banda polar h10 es completamente incoherente, esta mañana rmssd 90 ó 170-190 según quien midiese ,eso sí, muy bonitos los gráficos en la web pro. Definitivamente me paso a Élite HRV , me ha demostrado más consistencia en los datos y no ha cambiado los términos económicos en años ### 1/5 — Random number generator *2026-03-20, version 8.6.0* I typically end up taking 3 - 5 measurements each morning. Heart rate varies a couple of beats measurement to measurement (sometimes more), but the bigger issue is HRV variation. Today my first measurement was above my normal range, second and third were in the normal range, and the fourth was below normal range. In all cases, signal quality was optimal, so something is off. I’m better off ignoring it and just relying on how I feel. ### 1/5 — No funciona *2026-03-10, version 8.6.0* He escrito varias veces al correo y no responden , después de pagar la aplicación se olvidan del usuario Muy mal ### 1/5 — Does not work with new I-phone *2026-02-17, version 8.5.9* If I had giant hands I might be able to actually get a reading. But I have small hands and it is IMPOSSIBLE to cover the lens AND flash at the same time (and which lens am I supposed to cover?…you show a camera with only one lens in your demo…how old is that?!). I spend 20 minutes with the stupid thing stopping and starting and never actually get a reading. Too bad I can’t get my money back! ### 1/5 — Worked only 2xs *2026-01-25, version 8.5.9* This took only 2 measurements and then never worked again. Don’t waste your money. ### 1/5 — Version FR *2026-01-22* À quand une version française ?? J’ajouterais une 5ème étoile lorsque ce sera fait ;) **Developer response:** you can try to movitate us with a 5 star encouragement instead of this :) ### 1/5 — Never got a great reading on iPhone. Horrible user experience. No refund available? *2026-01-21, version 8.5.9* Title says it all. I tried, I don’t know several dozen times with my iPhone 16 to get a decent reading. Darkness, no cover, followed all scant instruction and support, broken links etc. how do I get a refund please? ### 1/5 — Never got a great reading on iPhone. Horrible user experience. *2026-01-20, version 8.5.9* Title says it all. I tried, I don’t know several dozen times with my iPhone to get a decent reading. Darkness, no cover, followed all scant instruction and support, broken links etc. how do I get a refund please? ## Most praised reviews (10 highest-rated) ### 5/5 — Health *2026-06-16, version 8.6.3* I take the Hrv 4 training measurement daily to monitor health status. I appreciate the feedback with the results and guidance regarding the intensity for the day ### 5/5 — The Gold standard *2026-05-26, version 8.6.3* Marco’s HRV app and academic research are leading the field for many years now. The app is easy to use and set up and my daily companion. I can only recommend it. ### 5/5 — Wirklich klasse *2026-01-21* Tut genau was es soll, und zwar wissenschaftlich fundiert. Kein Schnick-Schnack, einfach eine super App. ### 5/5 — Light reading appears way too low *2025-11-26, version 8.5.8* I saw great reviews on YouTube and decided to supplement my sport watch. My personal average is currently 30-42 ms. For two days in a row the HRV4Training measured 6.9 and 6.8. That level should signal significant cardiac problems. This is not the case according to my PCP and cardiologist. It would be useful if your app supported my Wahoo TrackrX or Kardiamobile 6-Lead to have more reliable input than the light/camera from my iPhone SE 2022. I don’t plan on spending $90 on a Polar H10 just to MAYBE get useful information from your app; especially given that the “entry level option” appears to throw your algorithm off severely. App resets for no reason while filling in tags (3x per session) and has no help or support link in the app. As a software developer, I would be ashamed of the poor usability and clunky UI design. Would request a full refund of my wasted $9.99 if there was a link… ### 5/5 — Ótimo *2025-07-14* Joia para quem sabe usar! ### 5/5 — Beste HRV App *2025-05-25* Ich bin begeistert die App ist durchdacht bis zum letzten bisschen und extrem einfach zu benutzen. Was für mich wichtig war: kein Abo. Die App ist wirklich klasse! ### 5/5 — Great App, Great Creator Substack *2025-04-07* I use this app every morning to get a quick snapshot of my resilience. I use other tools such as an Apple Watch and Oura ring, but I’m convinced that an on demand reading first thing in the morning is a great idea. This app does that and allows tracking subjective feelings. It’s not sexy, it’s functional. Exactly as it should be. Give it a try. And check out the app Creator Marco’s Substack. He’s a reliable sports scientist who writes about topics that matter. ### 5/5 — Excellent training tool *2025-03-03, version 8.5.2* This app is perfect for keeping track of training overload. It is simple, consistent, and actionable. With the information I can easily choose how do I adapt my training program. I must have to avoid overtraining and to optimize training. ### 5/5 — La mejor *2025-02-23, version 8.5.1* La primera aplicación validada científicamente y la más fácil de usar. El servicio de soporte siempre está atento a cualquier pregunta! ### 5/5 — Registro y monitorizacion *2025-01-23, version 8.5.1* Muy útil y fiable para la monitorizacion de la respuesta y predisposición al entrenamiento. Además la atención recibida ante las dudas me las resolvieron enseguida por correo. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*