Synchronization sucks! Been trying for a week to get Strava, MyfitnessPal and Health Mate to sync with fit. Even though they're all connected no sync is taking place. Uninstalling, unpairing, resetting, storage clearing, repairing... Nothing helps and sooooo many others around the net is having the same problems. If Google fit truly aims to be the center of attention when it comes to fitness data, they should really get this issue fixed, as it's been like this for a loooooooong time.