Harmonica?

[pdxdjazz]

I'm sorry. I joined this forum for a completely different reason, was googling for the answers on a couple of questions, but got interested in the app. Is it a sequencer type thing or more like GuitarPro? I just need some harmonica samples and it would be great to know how it would sound on the recording before I ordered a harmonica. Sorry for the off-topic. I am not able to download the app right now and look what it actually is

iReal pro is the best chord chart, melody-free, backing-track, transposable, adjustable in-your-pocket, play-along Fake-book app ever!
More info here: http://irealpro.com

If you are a musician, or want to be, you need this app!
)BOB