Health app vs. Fitbit

[Matthew Blair]

So recently I started using the Health and Fitness app to watch my steps, distance, etc. I wanted to compare its results to that of my Fitbit flex. They're reasonably close to one another, but the Health app is showing I have only burned 400 calories vs. Fitbit showing 2,380 calories burned.

Am I missing something obvious here?

 

[Mirakle]

Maybe fitbit shows the total calories count for the day including calories burned by just being there and Health app only shows calories burned during exercise?