Generally, your device/app tracks 2 types of calories. BMR (basal metabolic rate) & active energy. Basal metabolic rate (BMR) is the amount of energy expended while at rest in a neutrally temperate environment. We only pull the "active calories" or activity burned during the "active minutes".
Many activity tracker apps/dashboards expressly break down the categories of calories for you when you're looking on their app/account (total calories vs active calories, etc). However, some only display your "active minutes". Although we do not know how the different companies determine how many calories are burned during these "active minutes", we do know they use the stats you entered to calculate it (height, weight, gender, age).
If you have any further questions, or if you think your activity count is off, please email firstname.lastname@example.org for further assistance.