Simple and free application created for a student can observe two basketball players simultaneously.Observation of ball retention and brand.I use this current application of EPS or when driving through the Sports Association. When 1 or 2 teams do not play, they provide arbitration roles and observation. The observation is done on digital tablets or smartphones directly to students. Each observer can observe up to 2 players. The student then performed a screenshot to save and send me mail or not these statistics."Basketball EPS" gives to the players observed:- Total points scored- Number of successful passes- Number of ball possessions-% Of ball retention efficiency-% Success in shoot-% Success on free throws-% Success in shoot to 2 points-% Success in shoot 3 pointThe rapid return of these statistics can provide individualized evidence about the effectiveness of offensive players.This tool is based on a positive sense of observation (does not click when lost ball).The use of this application also allows to learn to collect data from a digital medium.Feel free to give me your opinion and make suggestions to me.