So far,this app works very well. I was up and running with control of Logic Pro 9 in about one minute! On board guide popped up, made it very easy for me to set up. Interface is pleasing to the eye. I can now sit back and listen to my recording project, give my hands a rest from the keyboard and mouse, tweak Logic Pro transport and mixer values on the fly....I did not have to read a manual yet...... Responsiveness is good. Price is reasonable.