My Cig Stats allows you to track your cigarette usage on several levels. You can tap "smoke" if you are smoking from a pack you purchased, "take" if you are smoking a cigarette given to you by someone else, or "give" if you are giving a cigarette away. With this information we can accurately calculate the cost of all the cigarettes you buy, whether you smoke them or not. We can also calculate the total amount of cigarettes you smoke as well as the health effects connected to that usage regardless of where the cigarette comes from. This is part of what sets My Cig Stats apart from "similar" apps.