Time is Money measures the money spent (or used) in a meeting.
Don't lose the opportunity to show yourself and to others how much this meeting is costing. Use the data as you want: jokes, serious analysis or, simply, to plan for your next meeting remembering that "Time is Money", after all.
To use it, simply set the data (people and salary, the latter hourly, dailyor yearly) and press start. You don't need to leave the app always open. Quit it while it runs, it will mark the fact that a meeting is running with a badge on application icon and it will recover his state (evaluating the time spent while not running) at the restart.
The idea for the app came during a meeting, of course. People tends to forget about the time, but to remember the money. Especially the bosses I had in my daytime work life.