Heart Rate Variability Logger 4+

I’m re-doing my review bc I had some issues with the user interface and Dropbox, but the developer helped me fix it. It was really an issue on my end.

Things to note:
(1) I did not realise that when I got this, I’d be looking at a spreadsheet of values to help me work out my aerobic threshold level. That’s just where the field is at the moment, so I’m happy to do this, but this app won’t pop out a magic number like an ftp value to stick with for a while. The alpha-1 value is itself dynamic anyway, but I use it on a trainer to get a ball park value that I can implement when riding at Zone 2.

(2) If you do want to go out and ride with this to follow the alpha-1 threshold as you ride, then note you’ll need two sources of HR data (two hr straps) if you use a bike computer, since you’ll now also need your phone to record data. That is, unless your phone can connect to the HR strap at the same time as your bike computer.

(3) This really does require that you pay attention to what you’re doing. It’s not as simple as pedalling and then getting a number. The instructions really do need to be followed.

Have been using the app for a couple days now to log my heart rate from my Alpha Mio. I think it's going to be very helpful in looking at my dysautonomia. Sometimes my HR is recording then is suddenly stopped- if this bug was fixed if give the app a 4 at least. Excited to see the possibilities with it.

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.