By the time a flight says "delayed," it's already too late.
Everyone watches the flight number. It only flips to "delayed" once the plane is on the ground, which is the same window a free tracker app gives you. Too late to act.
Flight Monitoring Solution (FMS) watches the aircraft. If the same plane ran late on an earlier leg, we flag every onward flight it feeds hours ahead.
The delay didn't start at the gate. It started one leg earlier, and that's the signal you've never had.