GROUPE SOS acts in the field, to respond to the social and environmental challenges of today's world, particularly for the elderly. The "Groupe SOS Seniors" application promotes social ties between the various establishments of the group, residents and their families. This new vector of communication improves social ties with all stakeholders in a simple, fast, secure and bilateral way. The "Groupe SOS Seniors" mobile application is a real step forward in the use of new technologies at the service of our seniors, for better support and quality of life, avoiding isolation and dropping out of life.