I just thought of a possible enhancement that might work. What if we just added a way to enter extra calories in your activity chart? So, in the case where you know the machine told you that you burned 300 calories, you could just enter an extra 300 calories without having FitDay do the calculation for you?
Give me some feedback on whether that would help. It would get around FitDay needing to know every activity, but isn't quite as convenient.