Zelenka is the official application of the City utility company Koprivnica.

The application is intended for citizens of Koprivnica in order to facilitate finding locations for waste disposal according to the desired type of waste and their current location.

Basic functionality:
• Finding the containers according sensed (GPS) or a given location and the type of waste
• View the calendar with the schedule for the removal of various types of waste
• Subscribe to a notification of waste management
• The news and current affairs
• Interface for reporting irregularities
• Multi-language support

The system is based on Eco mobile geographic information system (GIS) to process and display data on the containers for all types of waste, recycling yards and mobile recycling yards.