Concur, a provider of web-based business travel and expense tools, has added new developments and functionality to Concur Mobile, its smart phone application. New features include Concur Invoice, which allows customers to view line items, vendor information and images. After reviewing invoice-related information, managers also can approve payment requests or send back to the owner – all from their mobile device. Also new to Concur Mobile is Southwest Airlines content. Book flights through Southwest direct-connect bookings and see any scheduled Southwest trips appear in the trip list when looking at itineraries. Users also can see other available Southwest flights and the status of their trip, as well as add hotel, rental car, taxi and dining reservations. The company's mobile application is available for iPhone, BlackBerry and Windows phones.