Nike+Fuel or Fitbit is better with healthkit

[Badrottie]

I am more interested in HealthKit app and maybe one day I might want to buy Nike+Fuel or Fitbit Flex but can't decide which works well with HealthKit? I am guessing Fuelband and Fitbit are not needed because iPhone have M7/M8 co-processor already built in? Am I wrong? Thanks.

 

[dhlizard]

https://forums.macrumors.com/threads/1797025/

 

[Badrottie]

https://forums.macrumors.com/threads/1797025/

Thanks I just saw it before I saw yours.