I'm not a manager implementing this time tracking service at work so all I really care is if it is intuitive to use and does not distract my work. Harvest does it well! All I need is to select the project/client and write down a little description on what I'm going to work on. There are times I forget to start/stop the timer, but it is very easy to go back and fix such mistakes. It integrates with the widget on my Mac OSX well as well.

I have been using Harvest for almost two months now and have found it to be very easy to use. We are in the business consulting industry and accurately logging time is critical to us and to our clients. Harvest enables us to easily log time from our desktop Macs via the web browser or the widget and then even from our iPhones. You can add notes for when you log time daily and then you get a nice clean summary breakdown of hours against projects and tasks within projects. It works great both ways because as a manger you also get easy-to-read summaries for each person. All this, means it is easier and more accurate to invoice and our clients have appreciated the level of detail and easy-to-read interface.