ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
keezy - A colorful soundboard. Play with music.
cassini - Polyphonic Synthesizer for iPhone/iPod touch
Figure - Propellerhead creates world-class software products and services that inspire music makers and provide the foundation for a worldwide creative musical community.
Auxy Music Studio - Auxy brings real music creation to iPhone in a simple and inspiring format.
Splice - Music creation, collaboration, and sharing made simple.