Oku is a menstrual cycle tracking app designed especially for girls! In it, you will be able to monitor menstruation, learn more about your health and well-being, fill in a diary and much more. The Calendar function will tell you when to expect the next menstruation, and in the Encyclopedia you can read everything you are interested in about growing up. An avatar friend will help you on the way to new knowledge and habits! The application is in the testing phase and may change slightly in the future.