TMetric

TMetric is a new free time-tracking app with a user-friendly and simple interface specially designed for freelancers and small teams.

It allows you to create new tasks, projects and clients, add tags, edit your working hours, set billable time and rates on every project and task, get detailed reports on tasks and projects. It also can be integrated with many other services you use, for example, Trello, Asana, Visual Studio and much more.