I use various apps to record my activity, heart rate, sleep, weight, etc, most - probably all, I haven't checked and don't care - are based outside my country. Many have storage and sharing options, some can automatically post to Facebook...
Please excuse my stupidity, but I just can't see what's different about this. I'd rather contribute to science, for the good of people all over the world. That's why my Mac mini sits running World Community Grid on BOINC 24/7 (running largely off my solar panels).