In the UK, about 3 million people live with Chronic Obstructive Pulmonary Disease (COPD). Informal carers such as family and friends play a vital role in promoting well-being among older adults suffering from COPD. However, difficulties experienced by caregivers are increasing and affecting their quality of life. New technologies and innovations such as m-health have the potential in reducing the burden of these carers. In this paper, we propose an informal carer hub (ICH), which is part of the WELCOME EU project to help informal carers better manage COPD patients in two European countries: the UK and the Netherlands. The acceptability of the system has been tested by making use of a modified version of the technology acceptance model (TAM 3). The aim of this study was to ensure that the proposed informal carer application is easy to learn, effective to use and acceptable from the informal carers’ perspectives.