But now, the big question is can it compete with Apple Watch? I didn't really "get" the idea at first, but now that I have an Apple Watch I have actually paid a

But now, the big question is can it compete with Apple Watch? I didn't really "get" the idea at first, but now that I have an Apple Watch I have actually paid attention and enjoyed the activity app for all the reasons you stated above. Why not get the Apple Watch instead, and enjoy all of the other features you can have too? I think the comparison in a comment above to camera/video camera is spot on. It's a great feature for this other all purpose computing device I happen to have. I don't expect it will be a standalone product 5 years from now in any significant numbers.