The AIMhi Stay Strong App is a tool that addresses the mental health and wellbeing concerns of First Nations Australians using a cross-cultural approach. The app is based on more than 15 years of research and collaboration within the Aboriginal and Islander Mental Health Initiative (AIMhi). It is designed to promote wellbeing by reviewing strengths, worries and the goals or changes people would like to make in their lives. The AIMhi Stay Strong app is a motivational care planning tool that assists health providers to promote wellbeing with Aboriginal clients by considering their social supports, strengths, worries and the goals or changes they would like to make.