I have a project available on github under the username mdrobnak called fitconvtools.
I have been able to import data from my fitbit using this, however, I've had to time shift the data into the timezone listed in my account. This seems to go against the fit file type spec of everything being in GMT, but I'm simply trying to get something to work at this point. I was a heavy fitbit user previous to this, but got tired of the poor battery life and some questionable decisions regarding the band design.
Ideally I'd like to be able to upload the data all in GMT with a timezone offset in the device_info field. But anytime I do that, the data does not show up.
Has anyone else been able to create a CSV to fit to the java CSVTool program to upload with a valid timezone offset?
Thanks,
-Matt