There are 3rd party apps that can do this for you, e.g. for $3 Sync Solver for fitbit: https://itunes.apple.com/us/app/sync-solver-for-fitbit/id935306292?mt=8

There are 3rd party apps that can do this for you, e.g. for $3 Sync Solver for fitbit: https://itunes.apple.com/us/app/sync-solver-for-fitbit/id935306292?mt=8 https://itunes.apple.com/us/app/sync-solver-for-fitbit/id935...