iCountr - iPhone Web App to Count on
iCountr is an iPhone/iPod touch web app to count everything from the cups of coffee you had to the number of people attending a meeting. It provides a convenient way of counting everything you like using a familiar interface. It supports multiple counters with custom names, counter value manipulation and of course one-tap counting.
To use iCountr point your mobile Safari to: http://icountr.cinnamonthoughts.org/
iCountr on apple.com