This section introduces the Morphological Approach App, designed to support a structured, segmental analysis of congenital heart defects and to guide clinicians through a systematic interpretation of cardiac anatomy. Building on core principles of cardiac morphology, the app emphasizes a stepwise approach—from situs and connections to ventricular morphology and great vessel relationships—helping translate complex anatomy into clear diagnostic reasoning. Integrated within the broader congenital heart defects section, it complements existing resources and case libraries, reinforcing a consistent framework for evaluating a wide spectrum of lesions encountered in neonatal and pediatric practice. This tool serves as a practical educational scaffold for learners and clinicians, promoting clarity, reproducibility, and a shared language in the assessment of congenital heart disease. It is intended to support training and conceptual understanding rather than replace comprehensive echocardiographic assessment or expert consultation.