The task can be changed by only 2 clicks. Even when we are interrupted frequently, all tasks can be tracked easily. You can open the list of the tasks by the click on the small simple window which displays the current task. When the next task is started by the click on the lists or when the application is quitted, the time span of the last task will be output to the csv file. You can use the csv data for the project management and the cost analysis.
Because we are busy, we don't want to take time to track the tasks. This application should be the best way to track the tasks with the smallest effort.