Hi Diane, I have a Polar and a Fitbit - tested both of them and I always come out very, very low calorie burn with the Fitbit - I honestly don't think the Fitbit is as accurate as the Polar HR. I have a chest strap with the Polar and the Fitbit doesn't so maybe that has something to do with the accuracy of the calorie burn.I got 212 calories doing I Max 4 with my Fitbit. Even doing the math with my weight and met values on the workout manager I am always lower than what they give even lowering calories to that met value. I think we are all different. I do find it frustrating that I am usually way low compared. I have owned two different Fit Bit watches and both were lower. Height, weight, fitness level, age all make a difference in the calorie burn so it is hard to give a standard burn.
I have the same thing happen and I have owned a Fitbit Blaze and now A Versa 2 which is even worse if that is possible, I am pretty sure it is not accurate. I have just learned to accept it and know I it is just numbers. I also did the math for met value and still am way lower. Today I did I Max 4 and I burned 223 calories. Polar was better but had a tendency with all of them to go way off to nothing or 228 heart rate. Nothing I do matches up with met values in the workout manager.Hi Diane, I have a Polar and a Fitbit - tested both of them and I always come out very, very low calorie burn with the Fitbit - I honestly don't think the Fitbit is as accurate as the Polar HR. I have a chest strap with the Polar and the Fitbit doesn't so maybe that has something to do with the accuracy of the calorie burn.