slow, inconsistent, buggy

The premise is great, and HRV is certainly useful--but dont pay these guys $60 for the receiver, on top of $10 for the app. The app may or may not connect to the receiver, and you may or may not get readings, and it may or may not stop working in the middle of a reading. Its hard to say why exactly it doesnt work all the time, but its flawed enough to make this seriously over-priced and thus not worth it.

Bradley509 about ithlete Train.Recover.Perform, v2.1