Fitness apps can be used for a variety of different uses, including obtaining information about health and medical issues (e.g., WebMD), providing a list of exercises (e.g., Fitness Buddy), keeping track of nutritional and dietary information (e.g., Calorie Counter and Diet Tracker), keeping informed about topics related to fitness (e.g., Health and Fitness magazines), monitoring ones menstrual periods (e.g., Period Tracker Deluxe), developing running skills (e.g., Couch to 5K), learning about diet and nutrition fundamentals (e.g., Fooducate), and obtaining information about sexual performance and activities (e.g., iKamasutra Lite). There probably is no fitness topic for which there is not at least one app, and there are usually many more.