CorpsGuide is a comprehensive pocket reference app designed specifically for Marines, whether they are new recruits or experienced veterans. This free iPhone application offers a range of vital tools to enhance the Marine Corps experience, including a PFT/CFT calculator for assessing fitness scores, a height and weight calculator to ensure compliance with standards, and a JEPES calculator for tracking performance evaluations. Users can also customize their ribbon rack and access detailed information on various Marine Corps topics.

The app features an extensive knowledge base covering Marine Corps aircraft, weapons, military ranks, ribbons, badges, and uniform regulations. Developed by Marines, CorpsGuide is user-friendly with an intuitive interface, and it is regularly updated to provide current and accurate information. This independent educational app serves as a reliable reference tool for anyone involved with the Marine Corps.