jtlab
8760b84bb5cd85f6655a8435b4a0d7cae3bf2a4a4f5b19a31048bf217456f237
Software engineer, Node runner, Bitcoin pleb
It depends on the use case. I mean, most of the watches can measure heart rates, but the results with a Brustgurt are much better and more reliable. Tracker devices are more open (ANT, Bluetooth) and have better privacy options.