Transportoid is a free Android application developed by Sistemas Olton that provides public transport routes and schedules for over 60 cities in Poland, including Warszawa, Kraków, and Wrocław. The app works offline, making it convenient for users to access information on the go.

The user interface of the app is straightforward and easy to navigate, displaying data in a very convenient way. The application provides schedules and routes for buses, trams, and trains in Poland. However, it is essential to note that the application is only available in Polish language, which might be a significant drawback for non-Polish speakers.