Observe, quantify and validate, here are the main functions of multi-counter.Developed to be used by students in a sequence of EPS, this application taking almost immediate hand, will be effective in very many situations thanks to its fully open setting.Whether watching a badminton duel game where two opposing teams on a basketball court, where still wrestle, multi-counter will be able to quantify an observation, allowing students to compare themselves to a finding or be assessed in relation to a goal. This is of course the same for the teacher.Several input mode, depending on the desired number of observables, and the graphical positioning of observation buttons, allows a very large adaptation.We can thus move from observation of 4 different players on two observable to the observation of a single player as 8 observable as that of 2 teams of 4 observables. Multiple combination are so accessible on a need in the sequence.Tablet application from 7 inches.