I loved the idea of an app that could tell me to train or not to train, to go easy or go hard. Not having to make that decision was a relief.

However, the current crop of HRV apps are more hazard than help.

After using them for a couple years, I did a two-month, daily comparison of three recovery tests:

  1. Elite HRV
  2. ithlete Pro; and
  3. A manual orthostatic recovery test.

Of the three tests, both HRV apps gave me false positives, especially ithlete. A false positive–telling me to train when I should rest–should not happen. In contrast, the OSHR always reflected how I felt or warned me in advance that something wasn’t right.

Read more at Uphill Athlete