I've been manually entering my weight/BF into Google Health to sync to Trendweight since Google killed the fitbit app a while back. I am not tech savvy enough to even think about attempting the API thing on my own. Any chance of getting an autosync set up with the Garmin Index S2 scale? If not, then I will just manually log my data directly into trendweight...but Garmin autosyncs with MyFitnessPal, so there must be a way to do it. :)