Processing apparatus and method for determining supply and demand balance metrics for transport-related services

A processing device is provided for generating data indicative of a service user having a subscription and respective demand data of service users having a subscription and assigned a service provider based on demands of service users and provisions of service providers for transport-related services in a defined geographic area within a defined time period, respective supply data indicating service providers that are available in a defined time period and service providers that become unavailable until the end of the defined time period, respectively; first index data based on the respective demand data; second index data based on the respective supply data; and score data indicating a score indicator for determining a supply and demand balance metric defining the geographic area, the score indicator being calculated based on the first indicator data and the second indicator data. The score indicator can further be calculated based on unsubscribed service users or unused service providers that do not continu