
iTunes:
Analog Synth X - Aurelius Prochazka
Currently free.
"Matt Fecher's analog synthesizer for iPad created entirely with the new AudioKit 3.0 framework.

Get the full source code now from the AudioKit website at audiokit.io.
Features:
* 5-Voice Virtual Analog Polysynth
* Dual Morphable VCO Oscillators
* Dedicated Sub Oscillator
* FM Oscillator w/ Mod
* Beautiful Sean Costello Reverb
* Free-running LFO w/ 4 waveforms
* Multi-tap (Ping-Pong) delay
* 4-Pole Vintage Modeled Filter
* ADSR Envelope
* MIDI in for notes
* Detune Oscillators by Semitone & Hz
* Hold & Mono modes for keyboard
* Noise generator
* 8-Bit Crusher"