Other How accurate is the fitness app on iPhone?

[iiiiiMAC!!!!!]

I don’t have an Apple Watch. But I have been using the Apple fitness app to track my distance and total calories that I burn for the day.

I was wondering how accurate it is given its just a phone sitting in my pocket. How accurate would the calories burned feature be?

Thanks

 

[Gsxr750]

I’m gonna guess not that accurate. Looking back to right before I got my Apple Watch it said I was at 622 active calories with 5.39 miles walked. Today I’m at 772 active calories with 5.78 miles walked.