# Heart Rate Variability Logger

> Record, plot, and export heart rate variability data with advanced features. (iPhone/iPad app by A.S.M.A. B.V..)

- Source: https://appshunter.io/ios/app/heart-rate-variability-logger/id683984776 (this page in markdown: same URL + `.md`)
- Developer: [A.S.M.A. B.V.](https://appshunter.io/developer/1066843463)
- Category: Health & Fitness, Utilities
- Price: $9.99
- Rating: 3.60/5 from 18 App Store ratings · 55 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 11 MB
- Languages: American English
- Released: 2013-08-14
- Data updated: 2026-09-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/heart-rate-variability-logger/id683984776/reviews.md

## What is Heart Rate Variability Logger?

Heart Rate Variability Logger lets you record, plot and export time, frequency and non-linear HRV Features (includes experience sampling, RR-interval correction, DFA alpha 1 for aerobic threshold estimation in real-time, comparison between recordings, activity monitoring & step counting, location tracking). 

Heart Rate Variability Logger requires a Bluetooth Low Energy (also called Bluetooth Smart or BLE or 4.0) heart rate sensor (we recommend Polar H7 or H10)

Main features:
- Extracts, plots, stores and exports heart rate, rr-intervals, time and frequency domain heart rate variability features (AVNN, SDNN, rMSSD, pNN50, LF, HF, LF/HF, alpha 1 from DFA) 
- Configurable experience sampling for events annotation
- Comparison between up to 3 recordings lets you get a better understanding of differences in HRV under different contexts in a glance. The comparison modality includes also Outlier removal
- Activity tracking: step counter or accelerometer derived motion intensity for user context (step counter only for iPhones 5S)
- Location tracking, either using GSM/WiFi networks (low battery consumption) or GPS (high accuracy)
- Configurable time window for features computation (choose between 30 seconds, 1, 2 or 5 minutes)
- RR-intervals correction can be enabled to prevent ectopic beats or artifacts from affecting HRV features
- export for Kubios
- Filters data based on the selected threshold
- Shows HR in the app icon
- Data export using iTunes or Dropbox
- Tested for recordings longer than 24 hours

Please note that continued use of GPS running in the background can dramatically decrease battery life.

## Key features

- Record and plot HRV data
- Extract time and frequency domain features
- Experience sampling for event annotation
- Compare multiple recordings
- Activity and location tracking
- RR-interval correction
- Export data for Kubios

## Chart rankings

- #107 in Top Paid · Health & Fitness (US App Store)

## Recent user reviews (10 of 55)

All indexed reviews: https://appshunter.io/ios/app/heart-rate-variability-logger/id683984776/reviews.md

### 4/5 — Extremely useful but buggy

*2026-07-03, version 5.1.4*

I’m using this to assess my HRV and DFA in relation to dysautonomia and long covid. It’s brilliant and has given me insights I wouldn’t have guessed, but it never survives the day on recording. Usually each day needs a couple of restarts and I only notice if I go to check it.

### 2/5 — Leider nicht ausgereift

*2026-02-22, version 5.1.4*

Die Aufzeichung ist sehr gut, dafür gibts zwei Sterne. Aber was nutzt die Aufzeichnung, wenn man die Daten nicht auswerten kann? Man kann die Kurven weder zoomen noch auf ein ipad übertragen. Es fehlt eine Funktion zum Auswerten der Daten auf ipad oder zweitphone. Ich würde gerne mit altem iphone aufzeichnen, und dann auf Gerät mit grösserem display auswerten. Leider gibt es nur Export als csv Datei. Wenn man schon Geld für eine app verlangt, ohne die Möglichkeit zum testen, dann sollte das auch benutzbar sein.

### 1/5 — Crashes and No Refund

*2026-01-10*

Bought the app, crashes hard. Never worked, not updated in years, Apple and the greedy developer refused my request for a refund.

Stay away!

### 2/5 — Request to improve Data Export

*2025-12-24, version 5.1.2*

Dear Developer,
I would like to thank you for developing thins application! It’s really useful!
However, I am straggling with the data exporting. If I have longer measurements then the app is unable to export the whole data with any solution available in the app.

Could you help me with the data exporting?

I also can help you with measurements and feedback to you!

Thanks in advance!

Best regards,
Miklos

### 1/5 — Inutile con Apple

*2025-10-08, version 5.1.2*

Non si collega ad Apple Watch, se era specificato non l’avrei acquistato . Acquisto inutile, soldi regalati

### 1/5 — Naja

*2025-08-17, version 5.1.2*

Die Oberfläche ist unübersichtlich man bekommt jedoch viele Daten geliefert ist aber absolut nicht ihren Preis wert! Man kann die Daten auch nur über Dropbox speichern. Sonst stürzt die App immer ab!

### 1/5 — 오류 해결 요청

*2025-08-03*

bluetooth연결을 누르면 계속 앱이 자동으로 꺼집니다. 앱을 몇 차례 삭제해도 똑같은 문제가 반복됩니다. 환불 부탁드립니다.

### 3/5 — Email export is not working

*2025-07-11*

The app crashes after clicking the export button. Export via iTunes and Dropbox also doesn’t work.

### 1/5 — Apple Watch wird nicht Unterstützt…

*2025-05-27, version 5.1.2*

Kt

### 1/5 — Doesn’t work

*2025-04-16*

I just bought  the app and it doesn’t work, I would like to have a refund!

## Frequently asked questions about Heart Rate Variability Logger

### What does the Heart Rate Variability Logger app do?

The app allows you to record, plot, and export detailed heart rate variability (HRV) data. It extracts various time, frequency, and non-linear HRV features, and can also track activity and location.

### What are the main features of the Heart Rate Variability Logger?

Key features include extracting and plotting HRV metrics like AVNN, SDNN, and rMSSD, configurable experience sampling for event annotation, comparison of multiple recordings, activity tracking (steps/motion intensity), and location tracking. It also offers RR-interval correction and data export options.

### How much does the Heart Rate Variability Logger app cost?

The application is a paid app, meaning there is an upfront cost to download and use it. The provided information does not indicate any in-app purchases or subscription models.

### What devices are compatible with the Heart Rate Variability Logger?

This app requires a Bluetooth Low Energy (BLE) heart rate sensor, such as a Polar H7 or H10. It is designed for mobile devices that support BLE connectivity and can run the application.

### What are common use cases for the Heart Rate Variability Logger?

Common use cases include monitoring recovery after exercise, assessing stress levels, understanding physiological responses to different contexts through experience sampling, and estimating aerobic threshold using DFA alpha 1.

## Version history (last 5 releases)

### 5.1.4 — 2026-02-17

minor fixes

### 5.1.3 — 2026-01-26

minor fixes

### 5.1.2 — 2023-09-26

minor changes

### 5.1.1 — 2023-07-18

minor fixes

### 5.1.0 — 2023-01-30

added email export

## Apps similar to Heart Rate Variability Logger

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Hearty : Heart Rate,Stress, BP](https://appshunter.io/ios/app/hearty-heart-ratestress-bp/id1490743162) | 4.5 (7,532) | Free | Health & Fitness |
| [Welltory: Stress & Heart Rate](https://appshunter.io/ios/app/welltory-stress-and-heart-rate/id1074367771) | 4.7 (132,523) | Free | Health & Fitness |
| [Pulsebit: Heart Rate Monitor](https://appshunter.io/ios/app/pulsebit-heart-rate-monitor/id1581114201) | 4.5 (22,440) | Free | Health & Fitness |
| [Pulsedo: Heart Rate Monitor](https://appshunter.io/ios/app/pulsedo-heart-rate-monitor/id1528974993) | 4.5 (3,281) | Free | Health & Fitness |
| [CardioBot: Heart Rate Monitor](https://appshunter.io/ios/app/cardiobot-heart-rate-monitor/id1149412984) | 4.5 (10,078) | Free | Health & Fitness |
| [Instant Heart Rate: HR Monitor](https://appshunter.io/ios/app/instant-heart-rate-hr-monitor/id409625068) | 4.9 (228,890) | Free | Health & Fitness |

## More apps by A.S.M.A. B.V.

- [HRV4Training](https://appshunter.io/ios/app/hrv4training/id686923970)
- [Camera Heart Rate Variability](https://appshunter.io/ios/app/camera-heart-rate-variability/id788460316)
- [HRV4Biofeedback](https://appshunter.io/ios/app/hrv4biofeedback/id1504638613)

All apps by A.S.M.A. B.V.: https://appshunter.io/developer/1066843463

## Related topics

[heart rate variability logger](https://appshunter.io/ios/topics/heart-rate-variability-logger) · [hrv data](https://appshunter.io/ios/topics/hrv-data) · [elite hrv](https://appshunter.io/ios/topics/elite-hrv)

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*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 2026-09-04.*