This app is overpriced and underperforms. No PDF music can be found on iTunes. Very unfriendly.
First off, I'm not sure if this user is a member of the audience that iGigBook Mobile is targeted towards. This app runs on a iPhone or an iPod, there's going to be a limit to what you're going to able to do with it, compared to say, an iPad. I've spoken to a number of pro sax players and in their opinion all they would need is their iPhone and an app like iGigBook Mobile. They would use the app as a quick reference/refresher for tunes they somewhat know but need to brush up on the melody a bit before hitting the band stand. There are of course countless scenarios where you wish you had access to all of your musical material in a small compact package. "underperforms" [sic], compared to what? Consulting the index of various books by hand?
"No PDF music can be found on iTunes" - Both iGigBook Mobile and iGigBook are for musicians that have resources that they want to have quick access to. They're looking for a solution to the problem of it not being practical to carry around a suitcase full of books and binders. It's not our fault when a customer doesn't have material or does not know where to acquire it. The assumption is that you already have material that you want to get quicker and fuller access to. This is why you buy an app like iGigBook or iGigBook Mobile.
A Ferrari is a bad ass ride, and it doesn't stop being a bad ass ride because local road rules and/or your driver skill doesn't allow you to realize its full potential.