I need to make calculations, simple and semi-complex, several times each day. The calculator Apple provides wasnt stout enough, didnt offer paper tape type print outs, doesnt have anything like the functions I need. But opening Excel everytime I wanted to convert acres to sq. feet, or Euros to $$ wasnt convenient. CalcMadeEasy does all that, and much more, right on the desk top. And then shuffles off to the background. This should be a very common solution, but in my experience, its not -looked at lots of over desktop apps before installing CME, and now have it on all our machines (!!)