Fig. 3: PreventiPlaque home screen.

The displayed home screen of the PreventiPlaque App illustrates its core functionalities designed to support users in monitoring and reducing atherosclerotic plaque progression. The interface includes three main components: Sonographic image of atherosclerotic carotid plaque: The top section of the screen features a saved sonographic image of the user’s carotid artery, showing the presence and extent of atherosclerotic plaque. This visual serves as a personalized and educational tool for tracking vascular health. Daily Goals Section: The central triangular icon represents daily health goals, such as maintaining physical activity, adhering to a healthy diet, and avoiding smoking. A green-colored triangle indicates that all daily goals have been successfully met. This feature encourages users to maintain healthy habits consistently. Weekly Overview: The bottom row displays a compact weekly summary of the user’s goal adherence, with individual triangles corresponding to each day of the week. The color of each triangle reflects the completion status of daily goals, providing a quick visual assessment of the user’s progress over time. This overview helps reinforce accountability and long-term behavior change.