I expected a lot more such apps to appear, but it's sadly also unusable in a work environment. Eg. you can't get GH Copilot usage via API per user for organizations without admin/billing manager permissions. Also you need the amount of actual workdays left, without your holidays and vacations.
I made an own TUI dashboard that uses copilot cli (reads the output of /usage command) and gets workdays from the employee intranet site.