Heart Rate Variability Logger

Name: Heart Rate Variability Logger
Rating: 3.6 (18 reviews)
Author: A.S.M.A. B.V.

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

iPhone

Active Last checked 31 Jul 2026

App Store ↗

Quick verdict

What it is: Store information collected; independent summary not yet available.
At a glance: $9.99

Categories and search queries

Official categories

Health & Fitness
Utilities

AppCorpus categories

Key functions

Function	Availability	Access	Scope	Evidence
Family Sharing	Yes	Unknown	App Store	Store published

Screens

App Store

8 store screenshots

Pricing & paywalls

App Store

Price: $9.99

Last verified 31 Jul 2026

Ratings & reviews

App Store

3.6 18 ratings · App Store

2/5Crashes every time
This is a helpful tool, however this app crashes every time I use it, within half an hour. I’m using one of the HRV4Training recommended bands (Scosche). Renders this otherwise useful tool useless.

Happydutch · 31 Jul 2026
1/5No Longer Relevant
The creator of this app, and other physiology researchers, have proven that the DFA Alpha 1 method of determining aerobic threshold (AT) is deeply flawed and cannot provide a reliable indication of AT. I wish I had know this before paying for it. Perhaps the author should make this more obvious.

Sparky Fireball · 31 Jul 2026
1/5Crashes 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 25 · 31 Jul 2026
5/5Finally a no BS app.
Bloated apps can be infinitely frustrating for data collection and analysis. This app gives you straightforward data collection and analysis with a simple user interface. I will probably purchase other developer apps individually just to support him. Nice to see an app that doesn't try to exploit human weaknesses/impulses or cater everyone at once. 🤗

D0mnomnom · 31 Jul 2026
5/5Update V4.6.8 Working on iPad
Thank you for the iPad update, have made and saved several measurements. Sensor selection is appreciated. I will check your web site to get more information on the “Workout” correction factor. More aggressive at higher heart rate makes sense but I would like to understand the details better. The addition of DFA alpha1 is quite interesting. I will have to do some research as I have not used this feature in the past. HRV Logger is a great tool for monitoring performance over longer periods of time. Thank You.

Windfola · 31 Jul 2026

Privacy & accessibility

App Store

Privacy

Data Not Collected Developer declared

Accessibility

No accessibility labels collected yet.

Versions

App Store

4.6.2
- UI adjustments - compatibility with CorSense
4.6.3
> UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you
4.6.5
> Added Detrended Fluctuation Analysis (DFA) to compute Alpha 1 (a use case could be aerobic threshold estimation based on an alpha 1 of 0.75) > Dropbox export fix > UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you
4.6.6
> Added Detrended Fluctuation Analysis (DFA) to compute Alpha 1 (a use case could be aerobic threshold estimation based on an alpha 1 of 0.75) > Added DFA to the data export > UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you
4.6.7
> Added Detrended Fluctuation Analysis (DFA) to compute Alpha 1 (a use case could be aerobic threshold estimation based on an alpha 1 of 0.75) > Added DFA to the data export > Added current value in the real-time view, next to the average of the session > UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you
4.6.8
> iPad icon fix For any feedback / questions, please use @altini_marco on Twitter, thank you
4.6.9
> Added support for the Apple Watch. You can now see HRV features in real-time on the watch while doing a recording via the iPhone app For any feedback / questions, please use @altini_marco on Twitter, thank you
4.7.0
> Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold For any feedback / questions, please use @altini_marco on Twitter, thank you
4.7.1
> Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold For any feedback / questions, please use @altini_marco on Twitter, thank you
4.7.2
> Added new feature: the app will report the number of removed artifacts based on the method selected (workout or 25%), for each time window > Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold > Improved Comparison view and added Outlier removal For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.0
> New user interface > Added new feature: the app will report the number of removed artifacts based on the method selected (workout or 25%), for each time window. You can also hide features that include too many artifacts when looking at your recordings > Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold > Improved Comparison view and added Outlier removal For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.1
> Added average heart rate to the Features export file > New user interface > Added new feature: the app will report the number of removed artifacts based on the method selected (workout or 25%), for each time window. You can also hide features that include too many artifacts when looking at your recordings > Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold > Improved Comparison view and added Outlier removal For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.2
> Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.3
> Added support for the Apple Watch version 6.0 > Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.4
> Added heart rate as a feature (so you can also see it averaged over the feature computation window) > Extended support to WatchOS 4.2 and later > Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.5
> Added heart rate as a feature (so you can also see it averaged over the feature computation window) > Extended support to WatchOS 4.2 and later > Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.6
- added support for new dropbox API For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.7
- added button to logout and login from Dropbox, under Settings, which was missing for older iPhones For any feedback / questions, please use @altini_marco on Twitter, thank you
5.0.8
Improved comparison page
5.0.9
Improved comparison page
5.1.0
added email export
5.1.1
minor fixes
5.1.2
minor changes
5.1.3
minor fixes
5.1.4 · 17 Feb 2026
minor fixes

Show more Show less

Availability by market

Data quality & evidence

Page completeness: Live store listing
Last verified: 31 Jul 2026
Sources: App Store

Independent summary has not been published yet.

Report a correction

Use this page with an AI agent

AppCorpus MCP gives your agent current app data, prices, screens, features and sources.

Example prompt

Compare this app with its closest alternatives.

View JSON

GET /api/v3/apps/683984776

{
  "app_id": 683984776,
  "canonical_url": "https://appcorpus.com/apps/heart-rate-variability-logger-683984776",
  "identity": {
    "name": "Heart Rate Variability Logger",
    "slug": "heart-rate-variability-logger",
    "developer": {
      "name": "A.S.M.A. B.V.",
      "url": "https://appcorpus.com/developers/a-s-m-a-b-v-developer_819295f2846b520e4d91f6a09d2a1007"
    },
    "icon_url": "https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/69/d1/1f/69d11f00-1abd-1238-93e8-4f5894f7f295/AppIcon-0-0-1x_U007emarketing-0-8-0-85-220.png/512x512bb.jpg",
    "stores": [
      "apple"
    ],
    "platforms": [
      "iphone"
    ],
    "status": {
      "state": "active",
      "label": "Active",
      "last_checked": "2026-07-31",
      "last_checked_label": "31 Jul 2026",
      "banner": null,
      "region_note": null
    }
  },
  "listings": [
    {
      "store": "apple",
      "status": "ACTIVE",
      "url": "https://apps.apple.com/us/app/heart-rate-variability-logger/id683984776?uo=4",
      "rating": 3.6,
      "rating_count": 18,
      "formatted_price": "$9.99",
      "is_free": false,
      "has_iap": false,
      "has_subscription": false,
      "version": "5.1.4",
      "updated": "2026-02-17",
      "currency": "USD"
    }
  ],
  "summary": {
    "one_liner": null,
    "summary": null,
    "best_for": [],
    "not_for": [],
    "status": "fallback",
    "at_a_glance": [
      "$9.99"
    ]
  },
  "categories": {
    "official": [
      "Health & Fitness",
      "Utilities"
    ],
    "appcorpus": [
      {
        "category_id": "health-fitness",
        "label": "Health & fitness",
        "url": "https://appcorpus.com/categories/health-fitness"
      },
      {
        "category_id": "utilities",
        "label": "Utilities",
        "url": "https://appcorpus.com/categories/utilities"
      }
    ]
  },
  "use_cases": [],
  "features": [
    {
      "capability_id": "family_sharing",
      "label": "Family Sharing",
      "availability": "yes",
      "access_level": "unknown",
      "scope": "App Store",
      "evidence": "Store published"
    }
  ],
  "pricing": [
    {
      "store": "apple",
      "formatted_price": "$9.99",
      "is_free": false,
      "has_iap": false,
      "has_subscription": false,
      "currency": "USD",
      "market": "us",
      "last_verified": "2026-07-31",
      "rows": [
        "Price: $9.99"
      ]
    }
  ],
  "screens": [
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/91/f2/89/91f28956-2cfc-af3f-9625-61bb5c62db08/8dbdc301-ec03-4e3f-9f42-8e97357cfa71_6.5-inch_Screenshot_1.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "Heart Rate Variability Logger iphone screenshot 1"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/01/f0/77/01f077d0-fd03-d62a-305d-0af2c8ad258d/3bfaf4fa-8024-41e6-aebd-1c5050a9ea61_6.5-inch_Screenshot_2.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "Heart Rate Variability Logger iphone screenshot 2"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/51/89/31/5189310a-1ae0-2829-f536-d87ec5b3fd10/ffc44dde-dac2-4a9f-b403-14110e739dc7_6.5-inch_Screenshot_3.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "Heart Rate Variability Logger iphone screenshot 3"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/e1/99/05/e19905c0-e954-00ef-1e8c-1fc614a8d2c6/5d2f93a3-65b5-431c-8ec7-344cdad3acd3_6.5-inch_Screenshot_4.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "Heart Rate Variability Logger iphone screenshot 4"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/70/5b/c9/705bc9d5-8722-3b1e-2cd3-50d087d7ce48/6c3ec770-b5bd-4d4d-b738-715d686c1a79_6.5-inch_Screenshot_5.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "Heart Rate Variability Logger iphone screenshot 5"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/ff/d9/78/ffd978ac-6712-2af1-f07d-1bdafadb7ef1/bdb50a83-67a7-4186-ac02-58a22fb66bc1_6.5-inch_Screenshot_6.png/1242x1600bb.jpg",
      "store": "apple",
      "platform": "iphone",
      "alt": "Heart Rate Variability Logger iphone screenshot 6"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/5d/55/66/5d55666d-4d9b-8145-8d25-fdf5735639f1/2f5208ce-44ce-4758-8274-d2b4e64cde3a_IMG_4981_copy.jpg/312x390bb.jpg",
      "store": "apple",
      "platform": "watch",
      "alt": "Heart Rate Variability Logger watch screenshot 7"
    },
    {
      "url": "https://is1-ssl.mzstatic.com/image/thumb/Purple125/v4/6e/f8/84/6ef8846f-d8ec-79fc-7f0f-9ad6d0736e6c/21f422ff-0a24-40c5-9c0a-b9d1c53c5e02_IMG_4983_copy.jpg/312x390bb.jpg",
      "store": "apple",
      "platform": "watch",
      "alt": "Heart Rate Variability Logger watch screenshot 8"
    }
  ],
  "ratings": [
    {
      "store": "apple",
      "average": 3.6,
      "count": 18,
      "market": "us",
      "observed_at": "2026-07-31",
      "reviews": [
        {
          "rating": 2,
          "title": "Crashes every time",
          "body": "This is a helpful tool, however this app crashes every time I use it, within half an hour. I’m using one of the HRV4Training recommended bands (Scosche). Renders this otherwise useful tool useless.",
          "author": "Happydutch",
          "date": "31 Jul 2026"
        },
        {
          "rating": 1,
          "title": "No Longer Relevant",
          "body": "The creator of this app, and other physiology researchers, have proven that the DFA Alpha 1 method of determining aerobic threshold (AT) is deeply flawed and cannot provide a reliable indication of AT. I wish I had know this before paying for it. Perhaps the author should make this more obvious.",
          "author": "Sparky Fireball",
          "date": "31 Jul 2026"
        },
        {
          "rating": 1,
          "title": "Crashes and No Refund",
          "body": "Bought the app, crashes hard. Never worked, not updated in years, Apple and the greedy developer refused my request for a refund. Stay away!",
          "author": "Adam 25",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Finally a no BS app.",
          "body": "Bloated apps can be infinitely frustrating for data collection and analysis. This app gives you straightforward data collection and analysis with a simple user interface. I will probably purchase other developer apps individually just to support him. Nice to see an app that doesn't try to exploit human weaknesses/impulses or cater everyone at once. 🤗",
          "author": "D0mnomnom",
          "date": "31 Jul 2026"
        },
        {
          "rating": 5,
          "title": "Update V4.6.8 Working on iPad",
          "body": "Thank you for the iPad update, have made and saved several measurements. Sensor selection is appreciated. I will check your web site to get more information on the “Workout” correction factor. More aggressive at higher heart rate makes sense but I would like to understand the details better. The addition of DFA alpha1 is quite interesting. I will have to do some research as I have not used this feature in the past. HRV Logger is a great tool for monitoring performance over longer periods of time. Thank You.",
          "author": "Windfola",
          "date": "31 Jul 2026"
        }
      ]
    }
  ],
  "privacy": [
    {
      "store": "apple",
      "declarations": [
        {
          "title": "Data Not Collected",
          "detail": "",
          "source": "Developer declared"
        }
      ],
      "accessibility": []
    }
  ],
  "changes": [
    {
      "store": "apple",
      "version": "4.6.2",
      "released_at": null,
      "notes": "- UI adjustments - compatibility with CorSense"
    },
    {
      "store": "apple",
      "version": "4.6.3",
      "released_at": null,
      "notes": "> UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.6.5",
      "released_at": null,
      "notes": "> Added Detrended Fluctuation Analysis (DFA) to compute Alpha 1 (a use case could be aerobic threshold estimation based on an alpha 1 of 0.75) > Dropbox export fix > UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.6.6",
      "released_at": null,
      "notes": "> Added Detrended Fluctuation Analysis (DFA) to compute Alpha 1 (a use case could be aerobic threshold estimation based on an alpha 1 of 0.75) > Added DFA to the data export > UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.6.7",
      "released_at": null,
      "notes": "> Added Detrended Fluctuation Analysis (DFA) to compute Alpha 1 (a use case could be aerobic threshold estimation based on an alpha 1 of 0.75) > Added DFA to the data export > Added current value in the real-time view, next to the average of the session > UI improvements > Sensor selection when starting a recording For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.6.8",
      "released_at": null,
      "notes": "> iPad icon fix For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.6.9",
      "released_at": null,
      "notes": "> Added support for the Apple Watch. You can now see HRV features in real-time on the watch while doing a recording via the iPhone app For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.7.0",
      "released_at": null,
      "notes": "> Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.7.1",
      "released_at": null,
      "notes": "> Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "4.7.2",
      "released_at": null,
      "notes": "> Added new feature: the app will report the number of removed artifacts based on the method selected (workout or 25%), for each time window > Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold > Improved Comparison view and added Outlier removal For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.0",
      "released_at": null,
      "notes": "> New user interface > Added new feature: the app will report the number of removed artifacts based on the method selected (workout or 25%), for each time window. You can also hide features that include too many artifacts when looking at your recordings > Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold > Improved Comparison view and added Outlier removal For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.1",
      "released_at": null,
      "notes": "> Added average heart rate to the Features export file > New user interface > Added new feature: the app will report the number of removed artifacts based on the method selected (workout or 25%), for each time window. You can also hide features that include too many artifacts when looking at your recordings > Added color-coded filters for real-time recordings so that you can see more easily if the data crosses a certain threshold > Improved Comparison view and added Outlier removal For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.2",
      "released_at": null,
      "notes": "> Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.3",
      "released_at": null,
      "notes": "> Added support for the Apple Watch version 6.0 > Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.4",
      "released_at": null,
      "notes": "> Added heart rate as a feature (so you can also see it averaged over the feature computation window) > Extended support to WatchOS 4.2 and later > Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.5",
      "released_at": null,
      "notes": "> Added heart rate as a feature (so you can also see it averaged over the feature computation window) > Extended support to WatchOS 4.2 and later > Added heart rate to the features page when looking at the real-time view For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.6",
      "released_at": null,
      "notes": "- added support for new dropbox API For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.7",
      "released_at": null,
      "notes": "- added button to logout and login from Dropbox, under Settings, which was missing for older iPhones For any feedback / questions, please use @altini_marco on Twitter, thank you"
    },
    {
      "store": "apple",
      "version": "5.0.8",
      "released_at": null,
      "notes": "Improved comparison page"
    },
    {
      "store": "apple",
      "version": "5.0.9",
      "released_at": null,
      "notes": "Improved comparison page"
    }
  ],
  "alternatives": [],
  "evidence_summary": {
    "index_state": "S1",
    "evidence_level": 1,
    "level_label": "Live store listing",
    "indexable": true,
    "last_verified_at": "2026-07-31",
    "unknown_fields": [
      "Independent summary has not been published yet."
    ],
    "sources": [
      "App Store"
    ]
  },
  "availability_markets": {
    "live": [
      "us"
    ],
    "selected": "us",
    "note": null
  },
  "feature_events": {
    "events": []
  },
  "features_slice": {
    "plans": [],
    "features": [],
    "unknown_features": [
      "family_sharing"
    ],
    "data_cutoff": "31 Jul 2026"
  }
}