The widget is the compact view of the driver app: the numbers a driver needs during a shift, without opening the full application.
It shows the current shift, income so far and the balance. The data is the same as in the app and in the portal — the widget is a window, not a separate source, so a figure corrected in the portal changes here too.
If a driver reports numbers that differ between the widget and the app, the usual cause is a stale session rather than a calculation error: signing out and back in refreshes it.