It works also with Gear Fit. If you have a non-Samsung device, you need to change a ro.product.brand line in build.prop to:
I have 5.1.1 stock Sony Xperia Z ROM with Gear Fit Manager from here and SHealth app always shows 0 steps in pedometer tab and doesn't get Sleep/Heart Rate data, but received weight info from Gear Fit. Maybe it will work on non-Samsung devices with another version of Gear Fit Manager or another ROM, you can try and write here.
Play store: https://play.google.com/store/apps/d...id.app.shealth