VICE - Bring loops to life with the loop slicer plugin for Mac and Windows.
Auxy Music Studio - Auxy brings real music creation to iPhone in a simple and inspiring format.
Initial Slice - Industry quality sound kits | trap vst plugins | hiphop vst plugins | rnb soundpacks | Wavetable Synthesizer | Drum Kits, Midi and Loops, free Beatmaking Tutorials and more for modern producers.
cassini - Polyphonic Synthesizer for iPhone/iPod touch
Looperator - Looperator is a Multi-Effect Sequencer, chopping any audio input at the transients.
zMors Modular - Full featured modular synthesizer for iOS