Very disappointing

Most of the effects do not work reliably or consistently. There is often a very pronounced digital sound to the output, or it breaks up, cuts on and off, or a ‘gurgling’ underwater type artifact creeps in. I especially notice this with lower pitch voices (i.e. male voice); I’m male, as a test, if I try and talk/sing in a much higher pitch it works far more consistently, but even effects like the ‘male to female’ don’t work unless I do that. Simple effects like echo work fine, but any of the more interesting effects don’t. The ‘popeye’ and ‘olive oil’ effects show the problems well, and effects like autotune/pitch don’t seem to work? There are serious processing bugs in this app as it is now, at least on an iPhone 5 with iOS 9.2.1 (and no other apps in background). I hope they fix this, but for now it gets deleted, as it has no usable value at the moment (unless perhaps you are a soprano).

MasterFR about Voice Rack: FX - Vocal Effects Processor, v2.0.00