I still think that this is a really innovative app for iOS (before it was called iOS of course), and I wish it had been kept up to date, but sadly that was not to be.
I was taking a look at it again on my old iPhone 3G, and decided to look it up. I found that whilst the app wasn’t maintained for iOS it is available as a Max patch, and also for Pd as well. Which is really cool.
I thought you might be interested. You can find both patches here.