With this solicitation, OJJDP seeks to support the development and implementation of a free, interactive, open-source mobile application (app) and website that will serve as a companion to youth and families navigating the juvenile legal system. These tools will be available to youth and guide them through every point of contact with the juvenile legal system. The information communicated by the mobile application will empower youth and their families to be active participants in their juvenile legal cases by equipping them with relevant legal knowledge that is easy to digest. It will also help public defenders effectively educate and inform their clients, and their clients families.