A ramp crew needs to know what is on short final. A quay gang needs to know which ship is alongside and which is still an hour out. Both answers exist in public broadcasts — this puts them on the handset that is already in their hand.
An organisation names the airports and ports it works at. Everyone there sees the same picture, and a worker who moves between sites can set their own without waiting on an administrator.
Not a map full of anonymous dots. Each contact opens to what a crew actually acts on, in the units the trade uses.
The point is to use it mid-job, so it is on the channel screen next to the audio route — not somewhere you navigate away to.
Positions come from public ADS-B and AIS broadcasts, relayed by community receivers with real coverage gaps. It tells a crew a widebody is on short final. It is not separation assurance, and the app says so where it cannot be missed.
Give us the airport or the port and we will tell you what coverage actually looks like there before you commit to anything.