So have just got around to download and have a crack at demo mode, and wish to offer a few comments after initial impressions.
Scrolling in mixer overview is significantly hampered on an iPad Mini 1. Newer, later generation Fruitware should address this.
I do believe the intended quick assign choice was "Conga", and not " Congo". The latter, a republic located on the African continent. The former, a percussive instrument with ancestral origins from the African continent. Minor work around.
Dare I say, as I duck and cover, that there would appear to be no difference with the effects. Can only hope.
Gratis! Always a bonus.