iLifeTouch has introduced Drink More Water 1.1 (http://ilifetouch.com/DrinkMoreWater) in the Mac App Store. It requires Mac OS X 10.6.6 or later, costs US$1.99 and is found in the Health & Fitness section.
Drink More Water allows you to keep track of exactly how much water you have consumed in a day. It also allows you to keep track of your water consumption for the entire week and provides you with your weekly average.
Drink More Water was designed to be so simple that no language component is needed to understand how to use the app. Look at the screenshots, and you’re ready to use this water tracking device immediately, according to the folks at iLifeTouch.