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Heart Rate Variability Logger

Heart Rate Variability Logger

by A.S.M.A. B.V.

19 ratings
57 reviews
🔧 Utilities
💪 Health & Fitness
$9.99

Details

  • Released
  • Updated

Features

Background Location Access

Developer

A.S.M.A. B.V.
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Heart Rate Variability Logger screenshot #1 for iPhone
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Heart Rate Variability Logger screenshot #5 for iPhone
Heart Rate Variability Logger screenshot #6 for iPhone
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About

This app records, plots, and exports heart rate variability data, including time, frequency, and non-linear features. It supports experience sampling, RR-interval correction, and activity/location tracking. Requires a compatible Bluetooth heart rate sensor.

✓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
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+2

What's New in Heart Rate Variability Logger

5.1.6

September 22, 2026

bug fixes

User reviews

Most RecentHighest RatedLowest Rated

Please update for iOS 27 — Polar h10 strap no longer connects

Worked on my iPhone 15 Pro Max with a Polar H10 until I upgraded to iOS 27. I bought the app right before the update.
Now the Bluetooth button just spins. No heart rate, no recording. Permissions are on (Bluetooth and Motion). The H10 is not paired in iPhone Settings. Polar Beat still sees the strap. Watch still sees the strap. Only HRV Logger does not.
I use this for DFA alpha-1 / Zone 2 testing. Nothing else on iOS does that live. Please ship an iOS 27 Bluetooth fix. I want to keep using the app.
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RyderResrocRyderResroc

Overpriced

It gets the job done, but it’s very rough around the edges. Definitely feels like someone’s weekend/garage project. Not worth how much they’re charging... But unfortunately it’s one of the few apps which can record HRV data continuously (24h) and export it (actually you have to email it to yourself afterwards lol)
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agaeLoryagaeLory

Extremely useful but buggy

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.
AlgenontuAlgenontu

Leider nicht ausgereift

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.
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Axelino59Axelino59

Crashes and No Refund

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

Stay away!
Adam 25Adam 25
See 52 more reviews

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FAQ

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.