Remember knocking over that cocktail waitress and almost getting your butt kicked because you mouthed off to the wrong bouncer? Of course you don't, but you know it happened, because your friends were there with camera phones ready. To help keep you from becoming "that guy", the good folks over at Myrecek have developed the AlcoDroid Alcohol Tracker.
This free app provides an estimated Blood Alcohol Content (BAC) level by allowing you to log every drink you consume. It also tracks your daily, weekly, or monthly drinking habits and even the cost of your drinks. Cheers to that!