2025-06-24 00:00:00 Tap into the power of the Emerald Club® with the National Car Rental® app. The National Car Rental app offers features to help you take control of your rental experience on the go.​ ​Speed & Convenience in the Palm of Your Hand​ • As an Emerald Club member, profile details are automatically applied to your reservation to help you save time.​ • Access current and upcoming trip information as well as past rental history and detailed receipts.​