Perf allows you to manage your sporty performances of staying (walk, jogging, swimming, cycling, etc.) as well as your weight and your measurements. He/it manages the following data: sport, distance, time, hour, consumption, shape, speed and maximal speed. He/it permits to keep a historic of the different types of performances day after day and to exploit the data of the cardio-fréquencemètres as diagram. He/it also does the follow-up of your weight of shape and other features as the rate of grease or the indication of bodily mass. Of part his/her/its convivial interface, he/it is simple of use.