"Countdown" is merely a countdown timer with a graphical interface for Mac OS X. You set a time interval in minutes, press "start", and it counts down until the set time runs out. It shows the remaining minutes in the application icon (both when you press Cmd-Tab and in the Dock). You can stop the timer at any time during the countdown. "Countdown" features a global shortcut key to activate the countdown: Ctrl-Opt-Cmd-k . Its user interface is absolutely elementary because I did this app so that it just fits my needs.