How do I sync my Fitbit steps with the Apple Health app? December 03, 2019 22:34 Updated Related articles myFitnessSync - Fitbit to Apple Health - iOS Instructions Why am I seeing duplicate data in the Apple Health app? What is the difference between Fitbit to Apple Health Sync, and Health App to Fitbit Sync? How do I make myFitnessSync the #1 data source, and Apple Health #2? Does myFitnessSync sync all my historical data? How far back can it sync?