The paper describes the adaptation of a mobile platform initially developed for designing and administering questionnaires to a new context supporting checklists in emergency care. We took part in the checklists formalization process together with the domain experts and recognized that some tasks would highly benefit from the inherent features offered by the mobile technology. Thus we exploited the robustness of the model already designed for navigating among questionnaires and implemented additional functionalities that improved the usability of the mobile application, making it suitable for the paramedic staff and the volunteers that manage emergency cases.