I wore both my old Fitbit Ionic and new Garmin Venu for about 42 hours straight. Yesterday they overlapped for the entire day. And they came in with similar, but not quite the same, numbers.
I thought that my Fitbit would record fewer steps overall, because it recorded about 450 (about 7%) fewer on my walk yesterday. For the whole day, though, the Fitbit counted 14,190 to the Garmin's 13,250—7% more. But I wore the Fitbit on my right (dominant) wrist, so it may have just had more activity in general.
In other basic measures:
- The Fitbit recorded 13.3 km to the Garmin's 10.6 km;
- The Fitbit estimated my resting heart rate as 64 to the Garmin's 65;
- Fitbit counted 82 "active" minutes to the Garmin's 359 "moderate" and 369 "vigorous";
- Fitbit estimated my calorie burn at 3,100 to Garmin's 2,862.
I have no way to know which tracker was more accurate, but I might bet a dollar on the Garmin. I think the Garmin used actual distance to the Fitbit's estimate based on my usual stride length, which doesn't account for all the difference.
The Garmin's app presentation is so far beyond Fitbit's I wonder whether Fitbit even has software developers. Here's Fitbit:
And that's not even all of the Garmin data.
I walked halfway home after work today, and once again, the Garmin tracked my workout better than the Fitbit has done in months.
I'm glad I switched.