At work I often log the hours spent on a given issue into our issue tracker JIRA. But I’m always interrupted by someone coming by, an urgent email, or a more important task coming up. A stopwatch or simply noting the time you start on a task may work for a single long task, but the frequent switching left me guessing about the time spent after I was finished. I needed a simple program where I could easily track time on multiple tasks, save it to disk, and delete the tasks whenever I wanted to actually log the time. So I built it and use it every day.