Smoke Diary is an application designed to help all smokers count how many cigarettes they smoke out. Users can track their statistics over a week, a month or one year. In addition to a daily consumption and total consumption, users can monitor the total price for smoked cigarettes and the number of days without cigarettes. To motivate smoker to use the application, it calculates money saved compared to a user's normal consumption to achieve the set goal. The application is designed for an easy and simple use thanks to the clear design and the possibility of adding a cigarette using a widget.