The aging of the world population has been occurring in recent decades as a result of the decrease in birth rates and better health care that allow an increase in life expectancy. Senile dementias are examples of diseases that can affect the elderly, reducing independence and self-care. With the presence of women in the labor market and the reduced number of children, the elderly live under the care of professionals, however, the lack of contact with the family and unfamiliarity with habits and tastes can reduce the quality of life of the elderly. Technological advances should be used to bridge the gap between families, caregivers, doctors and the elderly. This work aimed to develop an application for mobile devices that facilitates communication between health service providers for elderly people living in long-stay institutions. The CuidaLife App was developed for a software operating system with input modules for registering the elderly, family members, doctors and caregivers. The developed application can be accessed through any smartphone, tablet or computer, as long as it has internet access. Its layout is responsive, that is, it adjusts according to the screen size of the device. The elderly registration modules were designed to allow the exchange of information about the elderly, not only medical, but also including food preferences, habits that are important for well-being. The caregivers module allows the exchange of information between caregiver shifts, with information relevant to the care of the elderly, and the medical module allows access to health information relevant to the monitoring of the elderly. The application worked well and may represent an easy and safe way to improve the quality of life of individuals who depend on third parties for their care.