Watch Steps Are Inaccurate...

Yes, cycling data doesn't get added for me either, I need to add it manually although it did work at one time. Walking data does get added automatically. However you said data gets added twice, are you now saying it doesn't, it certainly doesn't for me either on the watch or phone separately or on both together.

By the way, I'm unlikely to stop using Starva for cycling, I'm not convinced it is any more accurate at what it does measure, but it does measure a lot more than the watch on it's own. That's also not to say that the data provided by the watch isn't useful because it collects data about all your activities automatically which Strava just doesn't do.

Yeah, I'm not sure what caused my getting the double amounts on walking but I guessing that it was the Strava getting added to the HealthKit because after a turned off Strava it started balancing.

Here's the note from Strava: We're currently hearing reports of Strava data not being written to the Apple Health app. This only seems to be an issue for some athletes. Also, the behavior is inconsistent and it seems that some activities may come over while others do not. If you'd like you can try a fix that is working for some athletes you can delete and reinstall the app. To do this, log out of the Strava app, then delete the app and choose to also "Delete" all Strava data in Health. You won't lose any data if you do this because it's all stored on the Strava servers. After re-installing, when you link the Health app again, turn all Strava sources back on including the "Workouts" option. We're working to find the underlying issue and hope to have a fix soon. Thanks in advance for your patience. ------

Like you I'm not about to stop using Strava! And I'm sure they'll fix the bug soon!

Wearables are much more inaccurate (in terms of variance) then a smartphone in your pocket (much more closely resembles a pedometer). The source i see quoted most often is the UoP one - -http://www.uphs.upenn.edu/news/News_Releases/2015/02/case/

Plenty of people online have run their own tests comparing all the current wearables. Fitbit tends to overcount, Jawbone undercount, etc. Not sure where AW will fall (since it supposedly can learn over time so would probably need 10+ runs/walks to see meaningful calibration to your averages) but regardless, if its accuracy you are after, phone is likely always going to be better. But if phone says 10K steps and AW is 20% off and says 12K steps, for an avg person thats 100 calories (2k steps=100 cals). And reality is that while the watch is probably capturing "false steps" like swinging your arms and movements that are not walking, these still burn calories so the actual margin of error in terms of calorie burn is probably small. If you are a serious runner or training for something, its going to be more problematic of course.