Percussion Studio

I was wondering if any of you guys have ever used this software....Percussion Studio  http://www.moosware.net/PercussionStudio/   and if so what is your opinion of it? to me the concept is one of the best I've seen for learning rhythms...of the bigger names,the one that Ive found that comes the closest is   West Africa  which came with Kontact 5. but that is not set up for ease of new patterns...do you know any similar software ...that shows patterns in right hand left hand notation ect