Simple app, does what it says.

On some trains I notice it doesnt always come when it says but its usually by 1-2 minutes behind/ahead of schedule. Now this is obviously not the fault of the app, but the delays that people cause from holding doors open on the train. I take the D/N/Q/B often and those pretty much come when they say they will.

NewBloodIV about NextStop - NYC Subway, v2.4.4