Allows me to see a snapshot of everyone that is off in the department on any given day. Able to ensure adequate staffing.

With Whosoff, it's a great way to request annual leave within a company. Just select the time you require and the dates and the request is sent to your line manager. It's a straight forward way to book your time off and like previous employers where time off was requested sometimes just in person and there was no clarity about how many days off you could take, as well as how many holidays you have left. This is all very clear using whos off. Its clear to look at the company as a whole, who is currently on leave as well as individual departments.

The mobile app (iOS) does a reasonable job of making it quick and easy to log holidays etc, whenever you think of it rather than needing to wait until you're back in the office to do it.