We might not need an extra step to return to “Today” when browsing previous days.
Current behavior:
I have to tap on the date at the top left, then select “Today”.
Proposed behavior:
From the main screen, when the app detects that I’m viewing a past day, simply tapping on the date should take me back to today — and tapping it again could take me back to the previously viewed day.
I prefer this pattern, and it’s commonly used in many apps.