Ersätta is a specialized app designed for drivers operating replacement transport services for Nobina. Its primary goal is to ensure that passengers who need to switch to replacement buses due to train, subway, or tram cancellations receive updated real-time information. Users can access updated timetables for replacement services, view planned routes, and track the real-time position of the bus on a map.

The app equips replacement bus drivers with essential information to adhere to schedules, providing predictable and high-quality service to waiting passengers at upcoming stops and those already on board. Features include receiving notifications for new driving orders, accessing all ongoing and upcoming orders, viewing route timetables, initiating GPS positioning, checking in on tours, reporting completion, and sending real-time GPS positions to the Ersätta system via mobile data networks.