The desktop version of Cakewalk's wavetable synth Z3TA+ has been around for over a decade now, and has remained popular throughout that time thanks to it powerful oscillator section.
The iOS version of the synth is effectively a port of Z3TA+ 2, which was released back in 2011, albeit with an interface that's been redesigned to suit the iPad's touchscreen interface. The app features Synth, Modulation Matrix/Arpeggiator and Effects pages and comes with more than 500 presets. There's support for Inter App Audio, AudioBus and MIDI control.
In all, Z3TA+ is easily up there with the most powerful and fully featured synths we've seen for iPad. Between its six interconnected oscillators, flexible modulation matrix and impressive modular effects, it's capable of producing a massive range of thick, gritty sounds and is deep enough to keep iOS musicians occupied for days on end.
Buy from the App Store