Fővárosi Vízművek is a free Android application designed for residents to manage their water utility services effectively. The app offers a range of features including the ability to record water meter readings, view past readings, and access billing information for users whose invoices are directly handled by Fővárosi Vízművek. Users can also modify partial values for connected meters and communicate with the service provider through message functionalities.

The app facilitates easy registration for existing online service clients, allowing them to log in using their email and password. New users can register directly within the app, although registration is limited to customers with water meters. The application ensures that essential services, such as reporting water shortages or leaks, are easily accessible, enhancing the overall customer experience.