According to the Jawbone website, you can use your Apple Watch as an activity tracker for the UP system. I used an up for a few years now, and it's talking to my health app, but I can't seem to get it to reflect the Apple Watch step/exercise data rather than the iPhone 6 M8 data. There is about a 1k step discrepancy in between the Apple Watch data in the Health app and the Up app. Any ideas? I love using the Up ecosystem, but I also love my Apple Watch. In my thoughts, the Up app should be pulling the actual step count from the Health app, since it has read only access, and the Apple watch should show the same step data, because it is the only device that is constantly with me, and is the highest priority in Health.