TrayBien is a specialized app tailored for airline cabin crews that utilize the tray method for drink service. This app streamlines the process by taking beverage orders for each passenger, constructing multiple trays for delivery, and accommodating up to three rounds of service per flight leg. Notably, alcohol orders are highlighted in red for easy identification, along with order summaries for collecting payments conveniently.

The app offers features like easy order replication for subsequent rounds, retention of configuration settings across sessions, and compliance assistance by reporting the latest birthdate for legally serving alcohol. TrayBien also provides various service delivery methodologies to suit different flight attendant preferences, with an optional "Tray View" displaying seat numbers to prevent confusion.