[micadep]

That sounds useful ! Apple have the best sensors and algorithms, but they are terrible at presenting your data.

[egwor]

Is this true? Do you have a source? I thought that the pros tended to make use of polar’s technology and that their heart rate monitoring (via strap) was considered the most accurate / baseline. (My sources are from what I remember dcrainmaker saying who I consider a well researched reviewer)

[gregoryl]

Pros use whomever is currently sponsoring or donating

[hombre_fatal]

They are talking about wrist wearables with optical sensors, not EKG chest straps.

Though Polar’s apps are another good example of good data in a horrible app.

[adamgordonbell]

Yeah, for heart rate, polar chest strap is most accurate. But for heart rate, running watch is almost exactly the same for me.

Others report huge differences. It could be size of wrist, or who knows what throwing off measurements in some?