I’ve been using DC for about a year, and as long as one is faithful to logging daily and accurately, DrinkControl is great for tracking, trending, and allowing users to monitor (and reduce or moderate) consumption. My only complaint is the free version provides only incremental measurement that does not allow precise tracking . For instance, ABV for beer is in .5% incremental steps so that if the beers consumed are,say, 4.2%, one has to either measure slightly higher or lower to track. Still, one can get a reasonable measurement of consumption, and the trend graph and calendar are useful for determining long term consumption rates and trends, if the goal is reducing or moderating alcohol use through setting personal goals or targets.