Coredination app for iPhone and iPad

Coredination is a mobile workforce management tool that provides job dispatch, time sheets and location sharing. Manage your jobs and fill out your timesheets at the location of the job including automatically calculated work time and measured driving distance so that nothing gets left out. Invoicing can later be done on the web with a single click. Keep track of who is doing what, when and where. No matter whether youre out in the field or in your office.

This app makes use of GPS when the app is in foreground / active.
This app can also makes use of GPS when the app is in background / inactive.
To turn on or off locations in background tap settings in the app menu. Then tap "Location Services"
Continued use of GPS can dramatically decrease battery life.