Startup Idea: Time-tracking and Invoicing Software for Attorneys

Startup idea to develop an automated solution for attorneys, that tracks the time spent on clients' files and automatically generates billing invoices, reducing the manual effort.

I am an attorney. I have to keep track of my time in order to bill my clients. It would be useful if I had a software that kept track of which files I'm viewing and recorded the time spent, rather than trying to do it by hand. I would pay for software to do this, especially if it automatically created invoices.