Background : Patients who need Long-term care (LTC) or pal[iative care (PC) areoften in high-dependenry states. Caregivers play an important roleand have a very cLose relationship with the patient. Communicationbetween caregivers and healthcare personnel can enhance quaLityof patient care. Communication by phone catls or social mediastiLI have some l.imitations. Mobil.e applications are anothercommunication channeI since mobil.e devices are readlLyarailable, have more computing power and are becoming less costly.Objective : To develop a mobile application for caregivers providing care forlong-term care and palLiative care patients.MateriaI and Methods :User groups were analyzed to identify technical and functionaLrequirements. The mobil.e application was developed for iOS andAndroid platforms. Face validity and usabiLity were evaluated in10 heaLthcare staffs and 10 caregivers.Resutts : Features for caregivers include reporting of patient status tohea[thcare staffs, emergenry caLL, healthcare knowledge, chat andnotification. Features for healthcare staffs include checking thepatient's status, responding to emergency cal.ls, chat, notificationand data summary. Feedback showed that 78.2o/o of caregiversand 76.70/o of caregivers rated the application as very good or good.Conctusion : Mobile application development for mobiLe devices provides ameans for caregivers to care for long-term and pa[[iative care patients.