Aging is a natural process that increases the risk of disease and reduces capabilities. It is a rapidly increasing phenomenon in low -and middle- income countries, and received considerable attention during the COVID-19 pandemic. The elderly were at greater risk in the pandemic due to greater number of comorbidities and special care needs. Some require direct or indirect care provided by their family or caregivers; however, in some cases, older persons were obliged to care for themselves or other older persons assumed the role of caregiver. Although there are some technologies that support the basic and instrumental activities of daily living for older persons, these are not always affordable or available in countries like Colombia. This project proposes the development of an app for mobile devices that facilitates the care and monitoring of older persons by family members, caregivers, or for self-care. We propose a user-centered design methodology for the design of the app and the rapid software development methodology for its creation. Finally, we conducted a usability pilot study to determine the viability of the tool. The results are satisfactory and show that the tool is feasible and will positively impact end users.