I haven't used it yet except to set up a medical ID. Hopefully, other will chime in soon.
I'm using myfitnesspal with it. I had data populating yesterday and I looked this morning and everything is gone. It's still listed as a source but no data coming over. I love my fitness pal. Great app. Not so sure how useful this health app is at this point. Seems like it wasn't quite ready for prime time.
I'm using a 5s by the way.
I wonder if that's it, I had connected my fitness pal also