I am a big user of Harvest and this looks very similar. That is not a bad thing but I have a few issues with this.

1) When I signed up I filled out some information. I thought it was my first project but I don't remember now. This information has disappeared. I had to enter in new tasks, project, etc.

2) The tracking screen is too complex, I get that it does a lot but it is overwhelming. I will compare to harvest which asks very simple questions (Project, task, duration (if left blank it starts a timer))

Also is there a chrome/firefox app? This is crucial as a timetracking application should not take up significant time to use.