The Duchenne Heart App is a new approach aiming to assist families affected by Duchenne muscular dystrophy (DMD) in understanding and monitoring cardiac health. Unlike existing methods, this application allows DMD families to assess disease progression by comparing their child’s cardiac function to a group of boys of similar age who have undergone cardiac MRI studies. The primary advantage of the app is that it can provide personalized insights into disease progression, particularly concerning cardiac health, which is a critical aspect of DMD management. By offering a user-friendly interface for assessing relative disease severity, the app empowers families to make informed decisions regarding treatment and care for their loved ones. The app signifies a unique opportunity for pharmaceutical companies developing DMD therapeutics or foundations focused on DMD research and support. By incorporating the app into patient education initiatives, these organizations can enhance engagement and improve outcomes for individuals living with DMD and their families. Potential for further development includes enhancing the app’s functionality and usability. Future iterations may include additional features for tracking disease progression over time and integrating with electronic health records for seamless data sharing and analysis.