Blood Alcohol Content (BAC) calculator app. MyPromille mobile application wants to give insight in the blood alcohol content (BAC) when drinking alcohol beverages. MyPromille wants to give awareness by estimating the alcohol level inside the body while consuming alcohol . Based on the information provided by the user (gender and weight) MyPromille calculates the amount of alcohol in your blood using a formula developed by a Swedish professor named Erik Widmark(1920). The real blood alcohol con