Arise uses your iPhone’s pedometer to adjust the calorie budget. At the beginning of the day, the available calorie budget corresponds to your basic calorie needs without considering any additional movement. The calorie budget is then increased with every step.
On Arise's main dashboard, the 'Unclaimed' section displays calories which are meant to be unlocked by exercising or using the step counter.
The formula behind your dashboard is: Kcal Goal - Unclaimed - Used = currently available.