Contraction timer?

Where can I find a website that counts your contractions?Contraction timer?
http://pregnancyandbaby.com/pregnancy/ba...
http://www.freewarepalm.com/medical/cont...
http://handheld.softpedia.com/get/health...
Why do you need a website? Just find a clock or study with a second foot and use that. Also what does contractions have to do next to STD's??
Labor contractions?
You count from the onset [ start ] of respectively contaction, and how many second it lasted.
The time from start of one to start of another is ' how far apart' they are. [ not time between contractions ]
The time from their start, to shutting down of contraction is 'how long do they last'.
Example: contr. 5 minutes apart, lasting 60 second.