Scuba Exam is an iPhone application that aims to help aspiring scuba divers pass any Open Water Diver course in the world by teaching them basic diving theory and quizzing them on it. The app is also useful for certified scuba divers who want to refresh their knowledge. Scuba Exam contains over 250 illustrated questions and detailed explanations, covering essential topics such as hand signals, how to dive safely, the physics and physiology of diving, and diving terminology. Developed in cooperation with Tec Clark, an award-winning diving instructor and founder of ScubaGuru.com, the app also features a guide to basic scuba diving theory, including chapters on buoyancy, air pressure and gas laws, the scuba unit, dive tables, and much more. Scuba Exam is a fun and intuitive way to learn about scuba diving and is an excellent study aid for those planning to become certified scuba divers or for those who want to brush up their knowledge.