How is my remaining food for the day calculated?

The remainder is your goal for that diary day minus the calories you have saved for the day. If you explicitly enabled Health activity, the permitted activity amount is added as a separate line. Unfinished drafts are not saved food and do not count yet.

Open the summary's calculation to check the goal, logged food and activity. Different weekday goals can change the target for the selected date. Activity is off by default, and Calsa does not add steps and workouts twice. If you chose tracking without a calorie goal, there is no calorie remainder.