This app shows you a random ECG (I,II,III,aVR,aVL,aVF) and you need to estimate the angle of the electrical heart vector. You have three attempts to guess it within 10 degrees and after 3 unsuccessful ones you can also reveal the solution. Small fun program to play on the way to work or to re-fresh your skills. For medic students, nurses and people who love a bit geometry! If you want to measure your own ECG and analyse it then visit: http://www.attys.tech