Auxy Music Studio - Auxy brings real music creation to iPhone in a simple and inspiring format.
Giada - Giada is a free, minimal, hardcore audio tool for DJs, live performers and electronic musicians.
ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
JAM - Shake your sound - Music motion app. Make music by shaking your phone. 🎶
zMors Modular - Full featured modular synthesizer for iOS
Blocs Wave - A free audio app for creating music loops.