Also fun is the $US2 app’s use of the iPhone’s accelerometer to pitch-bend sounds, and its ability to let you jam along with a friend—and hear what they’re playing on your phone.
As you’ll hear in the video below, NESynth has built-in classic sound effects (jump, fire, laser, etc), and an arpeggiator to help build up melodies using the on-screen piano keyboard.
(For the synth geeks out there: sound generation comes from 3 pulse waveforms, a triangle waveform, and white noise.) [NESynth | iTunes Store]