The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Horizon Software I.T.:
CHRONO PRO is a professional high-precision chronometer that measures up to one millionth (a millionth) of a second.CHRONO PRO allows you to:- Make a single measurement of time- Follow a single player in the entire race and measure every single lap- Follow up to 3 players in each round and measure an entire race of each playerAll measurements are reported in the log window.During the race, or after the game, you can review all the measurements for both overall and for individual playerCHRONO PRO takes note of the best time for both single player up to 3 players.Every time you made the best lap CHRONO PRO shows the time difference between the previous best lap and which player has made it.You can pause the timer without stopping the race time.CHRONO PRO is easy to use and provides the same informations that are provided by very expensive professional chronometers.