Curious Marie is an iPhone application designed to calculate your personal radiation dose. By inputting information regarding your flight behavior, cigarette consumption, medical examinations, and place of residence, you can gain insights into how these factors contribute to your radiation exposure. Based on scientifically validated data, this app offers a comprehensive overview of how your lifestyle choices impact your radiation levels. Moreover, Curious Marie provides background information on topics such as environmental radiation, radon, radiation in food, air travel, cigarettes, and medical tests. Additionally, users can engage in a knowledge quiz focusing on nuclear physics, radiation, and radiation protection. For those seeking further learning, supplementary content is available through integrated YouTube videos.