---
title: "Heart Rate Variability Logger — App Overview"
url: https://marlvel.ai/apps/heart-rate-variability-logger
category: Health & Fitness
developer: A.S.M.A. B.V.
platforms: ios
rating: 3.6 (18 ratings)
pricing: paid
report_level: overview
generated: 2026-04-23
last_verified: "2026-04-23T07:34:44.136Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app is a technical utility for users requiring precise, sensor-based HRV data logging and advanced physiological analysis.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Health & Fitness |
| Rating | 3.6 ★ (18) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 5.1.4 |
| Developer | A.S.M.A. B.V. |

<!-- SECTION: Summary -->
## What is Heart Rate Variability Logger?

Heart Rate Variability Logger is a specialized health tool designed to record, analyze, and export complex HRV metrics using Bluetooth Low Energy heart rate sensors. It enables users to track time, frequency, and non-linear features, including DFA alpha 1 for aerobic threshold estimation, while integrating experience sampling and activity monitoring.

<!-- SECTION: Key Features -->
## Key Features

- **HRV Analysis**: Extracts and plots time and frequency domain features such as AVNN, SDNN, rMSSD, pNN50, LF, and HF.
- **Aerobic Threshold Estimation**: Calculates DFA alpha 1 in real-time to assist in monitoring aerobic thresholds.
- **Contextual Comparison**: Allows users to compare up to three recordings simultaneously to analyze HRV differences across various contexts.
- **Experience Sampling**: Provides configurable event annotation to correlate HRV data with specific user experiences.
- **Activity Tracking**: Integrates step counting and accelerometer-derived motion intensity to provide context for heart rate data.

<!-- SECTION: Target Audience -->
## Who is it for?

Athletes and fitness enthusiasts seeking granular, real-time physiological data and HRV analysis.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/heart-rate-variability-logger/id683984776?uo=2)
- [Full Intelligence Report](https://marlvel.ai/apps/heart-rate-variability-logger)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/apps/heart-rate-variability-logger).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*