Are they ever going to address the way it calculate calories burned? My wife says it is way off to any other device she has used, and can't really rely on it for workouts. I have researched online and found many complaints... Any thoughts?
Calorie counters in general are approximations unless there is a detailed analysis of your metabolism in a lab. Body composition makes a huge difference in how calories are spent. I spend 2500 calories a day doing light exercise because I have a big lean to fat ratio and I'm tall. All calorie counters I know don't that those factors into account. If you're muscle mass is lower than average, or your frame is smaller, you'll get results that are off too.
But, it doesn't matter in the end as long as they're wrong in a systematic and constant way, say always 20% off one way for you. You then just need to find out the off factor.
The only way to really know if it's wrong is to count you calorie intake and substract what whatever calorie counter says as calorie expended and look at you're average weight over a few weeks (weight varies because of water intake, so taking it one time is no good for this purpose).
I wish there was calorie counter that takes into account frame, age, lean mass, fat mass, sex, acceleration/deceleration and speed (at all time) and muscle used to move; that would give you a fantastically precise calorie count; otherwise it just gives you a trend.