# What AerScheduler is

> The three things everything else hangs off, and how the web console and the mobile app divide the work.

Source: https://www.aerscheduler.com/docs/getting-started/what-is-aerscheduler
Section: Getting started. For: Owners, Admins.

AerScheduler runs the day-to-day of a flight school, flying club, or FBO: who is flying
what, when, on which aircraft, what it costs, and whether the aircraft is legal to go.

## The shape of the product

There is one schedule, one roster of people, one fleet, and everything else hangs off
those three. A booking on the schedule pulls an aircraft out of the fleet and a person
out of the roster. When the flight comes back, the same booking produces the invoice,
moves the aircraft meters forward, and ticks off the lesson.

> **Tip:** If you only remember one thing: the reservation is the unit of work. Almost every number
> in AerScheduler is derived from reservations, so a booking that was never closed out is
> the usual reason a report looks wrong.

## Where you work

`app.aerscheduler.com` (web console) is the full console. Everything in these
docs happens there unless a page says otherwise.

The iOS and Android apps are the same account, narrowed to what a pilot needs away from
a desk: see your schedule, book, close out a flight, and grade or review a lesson.