I want to design this Project Management/Time Tracking application. In this application you can add a company and then each company has x number of employees, each employee can add time(hours/day/week) to track his number of hours in a month. You can also view the progress of a project and such things... What makes a great Time Tracking/Project Management app?
There are several apps like this out there, the best of which I know :
Please provide examples of such apps, and highlight what you like/don't like about them.