Check out the referenced other thread mentioned by chad.
I use the app only to start the workout and glance at it later. You’ll want to record to your garmin or wahoo and use the fields for them.
I use it every ride and the humon field is on most of my screens, I like it.
It is not invasive at all. The way they show it on their site makes it look invasive. I put mine off on the vastus lateralis under the shorts, near the end of the shorts. I never ever notice it after putting shorts over it.
If you use WKO4, there is a great selection of graphs available.
