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# HRi: Heart Rate Info app</p><p>1) Lets you compare hear-rate as measured by your watch's optical sensor vs an Ant chest strap.</p><p>2) Show traces of heart rate and cadence over about last 2 minutes.</p><p>3) Investigate HRV (heart rate variability) by looking at RR intervals. The app shows a measure of HRV (Heart Rate Variability) as ln of rmssd of RR intervals (root-mean-square, of successive differences).</p>

What’s New

# HRV Dev Screen (disabled by default)</p><p>- HR from Ant HR strap: Current value and trace (in red)</p><p>- rmssd of RR intervals</p><p>- ln(rmssd of RR intervals)</p><p>- Info on number of good/bad RR samples when calculating rmssd of RRs.</p><p>- Status of Ant HR connectivity</p><p>- Traces of: HR from watch and Ant chest strap; RR interval; lnrmssd.</p><p></p><p># RR Dev Screen (disabled off by default)</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
  • GPS location
  • Sensor data (i.e., ANT+, heart rate, compass)
  • D2™ Bravo D2™ Bravo
  • D2™ Bravo Titanium D2™ Bravo Titanium
  • ForeAthlete® 235J ForeAthlete® 235J
  • ForeAthlete® 630J ForeAthlete® 630J
  • Forerunner® 235 Forerunner® 235
  • Forerunner® 630 Forerunner® 630
  • Forerunner® 735XT Forerunner® 735XT
  • fēnix® 3 fēnix® 3, quatix® 3, tactix® Bravo
  • fēnix® 3 HR fēnix® 3 HR
  • fēnix® Chronos fēnix® Chronos
Average Rating: (3 Ratings)

30 December 2016 | Version 0.1.0-upd

This app crashes my FR 735XT causing it to restart having collected seemingly no useful data. I shall try it a few times more, although it would be appreciated if this issue were fixed....

Ralf Groot
26 December 2016 | Version 0.1.0-upd

It's the only app with HRV. Unfortunately it restarts my 735xt after about 20 seconds every time. Hope there will be a solution for it soon.

Michael Klingberg
10 October 2016 | Version 0.1.0

Did work before update - but now freezes the Fenix Chronos.

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