How does your software fit in with the purpose of timesheet software? I know they're not the same, but people have to enter this information for timesheets to bill clients. I know that people put that off all the time, so if they had to do this as well it would be a nightmare. How would you convince a company that already uses timesheet software to also use your software? I see one or the other becoming a repetitive task and the odd thing out that everybody starts to hate.

I did use something like that at the last company I worked for. Something we're looking into (probably more long term) is building out an API that can play well with others.