BPInfo is a free Android app developed by Olivér Falvai under the Travel & Navigation category. It provides real-time public transport information, current and planned traffic changes, and the ability to filter vehicle types. The app is only 5MB installed and can easily be moved to an SD card.

With BPInfo, users can receive push notifications about changes to their planned route, so they can stay informed and adjust their travel accordingly. The app also displays recent changes at the top of the list, with extra highlight for better visibility. Additionally, the app includes a description of the affected routes and validity of traffic info.

BPInfo covers a wide range of public transportation, including bus, subway, tram, trolleybus, HÉV (suburban rail), and ferry traffic info. The app uses data provided by the BKK FUTÁR public API, which is generally accurate, but minor inaccuracies may occur. Users can report these inaccuracies to BKK at or through the app's settings screen.

Overall, BPInfo is a great app for those who need to stay up-to-date with public transportation information in Budapest. The app is easy to use, provides accurate information, and is completely free.