Hello.
I think that the "last seven days" part of the app is useful to understand the average of your behavior in a week: how many steps have you done, how many calories have you burnt, etc.
In my case I look at that part of the app to compare the average calories I've burnt, that are not the same every days, with my daily intake for a balanced diet.
The app to calculate the average uses the last seven days including the current day.
In this way your average changes minute by minute (because the calculation for the current day goes on) and is impossible to know it exactly, if not approximately at the end of the day near midnight.
I think that could be an useful upgrade for the app to calculate the last seven days without considering the current day but stopping with "yesterday".
In this way you have the exact average of your behavior in a week and still you have the current day behavior in the main part of the app.
I think also that changing that should not be too hard from a technical point of view.
Please let me now if you agree.
Many thanks
Federico