Countdown Chronometer

Super simple to use and very precise countdown chronometer.
Select the time you want to chrono, and start counting the time back down, an alarm will sound when finished, even if you're using other applications.
You can minimize the application and will still work as the time finish and the alarm start. You can also pause and stop the time.
It is ideal for sports like jogging, playing games where you have to timing something, or to cook with precision.
It has an intuitive and easy to use interface and is completely free.