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HRV Analysis


Heart rate variability app with data analysis, history, stats and interval graphs.</p><p></p><p>WARNING: Changing settings when the app is not running causes a crash which maybe in firmware. Causes corruption of settings on device. Work in progress</p><p></p><p>WARNING: This app is provided purely for recreational purposes only. The information and content provided by the app is not intended to serve as a substitute for consultation with, diagnosis by, and/or medical treatment from a qualified medical practitioner.</p>

What’s New

WHEN USING CONTACT DEVELOPER PLEASE ADD YOUR EMAIL ADDRESS OTHERWISE I CAN'T REPLY</p><p>v1.1.6</p><p>- Added Venu2+ and SDK 4.1.4</p><p>- Garmin firmware bug stops Venu 2 writing FIT files (pending Garmin FW release for fix)</p><p>v1.1.5</p><p>- Updated to SDK 4.1.2 - saved enough memory on small devices to include them</p><p>Bugs</p><p>- Bug in sport/sub-sport handling overwriting sub-sport on close</p>

Additional Information


This app requires access to:

  • Send/receive data via ANT radio to/from third-party sensors
  • FIT files (activity recordings)
  • Record additional information into activity files
  • Sensor data (i.e., ANT+, heart rate, compass)
  • Your Garmin Connect™ fitness profile
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  • vívoactive® 4S vívoactive® 4S, GarminActive S
Average Rating: (68 Ratings)

Kevin McHugh
July 1, 2022 | Version 1.1.6

I downloaded this because I wanted more data than the Garmin HRV Stress app. This definitely hits the mark on that, and it works very well on my Fenix 5. I need to learn more about it, but the developer has clearly done the homework and made a really thorough app. Grateful to have it and looking forward to using it more.

June 19, 2022 | Version 1.1.6

Great app and easy to use. Fantastic communication from David on a technical issue. Highly recommended

June 11, 2022 | Version 1.1.5

Nice and effective

Tanya Nelson-Kana
May 30, 2022 | Version 1.1.5

Downloaded app - which is supposed to be compatible with my Vivioactive 4S, but did not show up on my watch at all

Developer Reply
May 31, 2022, DJM_007

Hi, Rather than giving a bad review you could have reached out. Seems there may have been a glitch with Garmin. Lots of other 4S users have no issues.... regards, David

Heidi Wood
May 21, 2022 | Version 1.1.5

Best HRV app

May 6, 2022 | Version 1.1.5

Nothing fit file :( not sync IQ :( Venu2

Developer Reply
May 10, 2022, DJM_007

Hi, Emailing me directly rather than leaving a bad review normally works well. Suggest you read the app webpage description and turn on FIT write option. Regards, David

Martin Beránek
April 30, 2022 | Version 1.1.4

Hi there! Nice app! Just to clarify - what is the final result stands for? (in my case) W=128,9 is this value in ms? Thx

Developer Reply
May 1, 2022, DJM_007

Hi, Glad you like the app. The website describes this display (link in the description ). Basically M = monthly and W = last week's average HRV. The number in the circle is the current measurement. Email if you need anything else. Regards, David

Christof Rademeyer
April 10, 2022 | Version 1.1.4

Very impressed. Using this on a Venu 2 and it's on par with an HR strap / app combo. Love the customizability and ease of use.

Developer Reply
April 11, 2022, DJM_007

Thanks for the kind review

Tom van der Sande
April 4, 2022 | Version 1.1.4

Will the app also upload data to Garmin Connect? If so, how should I find this?

Developer Reply
April 5, 2022, DJM_007

Yes. Enable FIT writes either in the apps menu or under app settings in connect. You will see a white circle turn red as recording starts. Regards, David

Hendrik Odendahl
March 30, 2022 | Version 1.1.4

Jow should it be measured? Standing or lying down ?

Developer Reply
March 31, 2022, DJM_007

Hi Hendrik, I usually do the test sitting still and comfortably. Any position at rest without stress or raised heart rate or blood pressure will give the best result. Also try at the same time each day. Regards, David

Jack McGinn
March 29, 2022 | Version 1.1.4

All seems fine so far. Just curious, may have been answered already but will the app automatically switch to my HRM reading when I am wearing it? And use the watch sensor when not?

Developer Reply
March 29, 2022, DJM_007

Hi, Thanks for the review. The app now uses the sensor hub built in. Essentially if a strap is detected (it is listed in your sensors/accessories) it will connect to this in preference to the OHR. Regards, David

March 23, 2022 | Version 1.1.1

After this update it nolonger records to FIT file!! Worked perfectly before the update...Please fix asap

Developer Reply
March 23, 2022, DJM_007

Hi Andrew, Rather than leaving a poor rating you'll get a better response by emailing me to debug your issue. Please a) read the instructions and b) check that the FIT Write option is enabled. this and release 1.1.2 seems to work on most devices

March 14, 2022 | Version 1.1.1

Hi, I downloaded android tranfer app on my Macbook connect to watches and went to garmin/app/logs folder where is only one file CIQ_LOG.BAK. I changed to CIQ_LOG.txt and it is not working. Can you help me?

Developer Reply
March 14, 2022, DJM_007

Hi, the website shows you how you need to name the LOG file. Note that on the Fenix 7 series this doesn't seem to work but I am investigating. Any issues just email me. Regards, David

Alain D.
February 27, 2022 | Version 1.1.1

Benutze die App nun sein Anfangs Jahr jeden Morgen nach dem aufstehen. Nutze das Messergebniss um mein Körpergefühl abzugleichen und so mein Training zu steuern. Komischerweise wird die Aktivität nun seit 2 Wochen in Garmin Connect als Krafttraining aufgezählt. Keine Ahnung wie ich das vorstellt oder wieder ändern kann.

Developer Reply
February 28, 2022, DJM_007

Hallo. Ich habe den Aktivitätstyp in der letzten Version geändert, da er hinzugefügt wurde, um Aktivitäten auszuführen, was Probleme für den Trainingsplan der Leute verursachte. Ich könnte sehen, ob ich dies konfigurierbar machen kann.

Joshua Thompson
February 11, 2022 | Version 1.1.1

The HRV trend screen only shows me a number for w. I’m assuming that’s for women vs men. I’m a male and can’t find where/how to change that. Thanks.

Developer Reply
February 11, 2022, DJM_007

Hi, The website in the description explains the display. M means Month and W means Week. The App picks up your sex from the watch settings and displays an age/sex related range of expected values in the arc. Hope that helps.

Joshua Thompson
February 11, 2022 | Version 1.1.1

The HRV trend screen only shows me a number for w. I’m assuming that’s for women vs men. I’m a male and can’t find where/how to change that. Thanks.

Rick Salapong
February 10, 2022 | Version 1.1.0

What a great app. Thanks for writing this app and offering it for free. Beer £ sent.

Roman Paulovič
January 24, 2022 | Version 1.0.9

Excellent application. It will take a while for me to understand all the details, but it is still elegantly prepared and explained. Well thank you. I would welcome the ability to turn off sync to third-party applications such as STRAVA (Appears as 5 minutes activity)

Developer Reply
January 25, 2022, DJM_007

Hi, Not sure how to exclude besides turning off writing of FIT files. I will see if the activity type makes a difference. Regards, David

Luís Miguel Ferrão
January 10, 2022 | Version 1.0.7

Great app. Very relevant and easy to read data. Use it everyday to monitor my freshness… Besides all those great features and reliability, in the one or two occasions I needed support, it came fast, friendly and solution oriented 5 stars…

Ernesto ZC
January 9, 2022 | Version 1.0.7

Excelente aplicación, arroja datos muy certeros y las gráficas de cada uno de ellos lo hace ser muy visual y fácil de entender.

Jonas Nielsen
January 8, 2022 | Version 1.0.7

Hey, Seem to take measurements ok using chest strap. But how do I access the data and graphs? Seems like it's possible but I can't find anything on Garmin Connect e.g. Thanks!

Developer Reply
January 9, 2022, DJM_007

hi. Thanks for the review. Just enable FITWrite in the menus and Garmin will pick up the activity result and display the data.

Tigran Voskanyan
January 7, 2022 | Version 1.0.7

Thank you, awesome work !

Eddie VanHuss
January 1, 2022 | Version 1.0.7

Love it! What does long and short mean on one of the stats page?

Developer Reply
January 1, 2022, DJM_007

Hopefully explained on the website. Long beats are those longer in duration than “expected” given the preceding ones by the threshold amount. Short is the reverse. Typically an ectopic beat would be a short or long pulse followed by a compensating catch up beat. These can be clearly seen on the II Plot if they occur. Regards david

January 1, 2022 | Version 1.0.7

Very nice app. Does it support an external sensor such as a chest strap?

Developer Reply
January 1, 2022, DJM_007

Hi Glad you like the app. A chest strap is the best way to get accurate and consistent results. It will use any available external chest strap if known to the watch. Ie in list of sensors Regards David

December 25, 2021 | Version 1.0.7

Great app. Long term recording would've be nice to have. I would for the app, although it's free, which is amazing.