The official LIRR app has info that you can't find anywhere else, including realtime location, crowding, and push notifications.

Whether you're new to the system or a daily commuter, make your trip as smooth as possible with:

• Trip Planner: Check train schedules, including all official connections, and how full a train usually is
• Realtime Train Tracking (updated every 2 seconds!): See exactly where each train in your trip is, view when it will arrive, and follow it throughout your trip
• Realtime Train Crowding: See how full each car is and where you should stand on the platform to have the best chance at finding a seat
• Train Length and Platform Layout: See how many cars your train has today, where it will stop, which cars will open at your destination, and where to board for an accessible trip
• Chat: Text with a customer service representative within the app
• Notifications: Track assignments at major terminals, track changes systemwide, and canceled or held trains
• Bookmarks: Save and quickly access favorite trips and stations
• Share: Send your trip details to friends & family
• Nearby trains: Quickly see the status of the train you are riding
• Stations: View upcoming departures, ticket office hours, as well as escalator and elevator status
• Ticketing: One tap access to view or purchase new tickets via MTA eTix