The CTCAE v4.0 iPhone application, developed by The Children's Hospital of Philadelphia, offers a comprehensive tool for healthcare providers and researchers. This standardized system provides grading for adverse events related to drug treatments and medical devices. Published by the National Cancer Institute (NCI) on October 6, 2009, this application allows users to access the full CTCAE v4.02 document on their iPhone or iPod Touch, enabling bedside grading and easy information retrieval.

With detailed grading standards for 26 categories of adverse events, healthcare providers can navigate hierarchically, bookmark frequently accessed events, and search across names, definitions, and grades. The application aims to streamline the characterization of adverse events consistently, enhancing clinical care and research efforts.