I was after a bathroom scale that can automatically upload data into Apple Health. I had figured that a Wifi connected scale would be the way to go, but this inexpensive Bluetooth scale is excellent.
You do not need to use the app to capture your weight every time. Previous measurements are stored in memory and are all downloaded when you connect the app and straight into Apple Health. This is super convenient.
I'm not so sure about the accuracy. This scale measured my weight as 0.5 kg less than my previous scale. Also, the other stats may not be that accurate. I once had the same wight two days running, but every other measurement was exactly the same. Somehow I doubt this would be true.