I'm looking for a way to track my time on projects. I found a few free / demo apps (BillableGoal and timr), but those don't do exactly what I need.

I want to be able to select from a list of clients and projects, start a timer that can run in the background. It would be nice to be able to make manual edits / timers too, in case I forget to start a timer for something. It would be great if I could set multiple timers as well--i.e. one for when I arrived / left work, one for project work (I have billable and non-billable hour goals).

I'd like to then be able to clearly see a list of all my entries and their times and dates on the phone. I do not want to have to access the internet or my desktop to perform administrative tasks -- I want to be able to do everything from the BB, even if I don't have internet service.

It looks like either Exgis or My Time Tracker will do this, but neither have a trial and I don't want to blow $15 and find out they don't do what I need. Can anyone confirm this?

Thanks.