Kronos is an Air application that will help you time your projects for cliens you're working for. As an Air application, you first need to install Adobe Air that will let you install Air applications.
You can download the Adobe Air Installer by clicking here.
Once Air is installed, you can download the latest version of Kronos and double click the downloaded package in order to install Kronos application. You're now ready to test the application but remember that it's still an alpha version !
Please contact me if you feel like sending me some feedback !