Promille for Android uses scientifically accepted formulas to using sex, age, weight, and height to calculate estimated blood alcohol per milli. The beverages can be selected from a categorized list of targets, or by entering the amount consumed and the alcohol content in percent. In Live mode, drinks are entered while drinking and it calculates the current blood alcohol level and displays how long the reduction of the alcohol. The calculation is done in real time and recording time of the alcohol (resorption) is considered. This may be an option, so that always the maximum value is displayed. In live mode, the program can be closed and continued at a later date in order to save battery life.