Developer IK Multimedia has started a tutorial series for Syntronik. Although they're using the desktop version in these examples it is still relevant to iOS. Their voice guy sounds good, but I'm not sure if he's the right choice for tutorials.
Check out this new tutorial about using the legendary synth powerhouse Syntronik's arsenal of high-quality effects.
When it comes to high-quality effects, IK's expertise is simply indisputable. Syntronik comes with 38 mind-blowing effects which are derived from our best-selling T-RackS mix and mastering suite and AmpliTube guitar workstation. We have also designed some new ones like the famous Ensemble Chorus, for a total number of effects that you won’t find in any other vintage synth collection of its kind. 5 effects can be simultaneously inserted on every instrument via a new attractive “lunchbox-style” interface that allows for an immediate visualization and editing of every parameter from within a single, convenient interface. The sheer number of effects and their world-class quality provide a degree of sound manipulation that is unmatched.