View iOS Health data externally
Best way I found was to:
Open Health App and head to Health data &lt; All and use the arrow on the upper right of the screen then choose Export.

It will take a while if you have a data. You'll be able to get a ZIP file that you can mail to yourself.

Just use XCode and you should (at least!) be able to read your data. You could then use dropbox to sync it with your other devices.