Budapest Airport (BUD) Info + Flight Tracker is a free Android app developed by Sinecloud that provides comprehensive information about Budapest Ferenc Liszt International Airport, formerly known as Budapest Ferihegy International Airport. The airport is the largest of the four commercial airports in Hungary and is located 16 kilometers southeast of the city center.

The app features live arrival and departure boards with a flight tracker that includes a map. In addition, users can search and compare cheap flights from hundreds of airlines, set up a world clock with their selection of cities, and use the currency converter to get live exchange rates and converter for currencies from every country. Users can also save their hotel trips and rental car trips, manage all their flight trips, track their flight, web check-in, and share trip details. Moreover, the app provides a packing checklist to keep track of things to pack for the next trip, find and book the next available flight from Budapest, and access national emergency numbers.