Intelligent Gadgets has released MIDI Mandala – a wireless Midi controller for iPod/Touch, iPhone, and iPad.

The user selects a musical scale that is mapped to the mandala. The lowest note is in the center, followed in increasing pitch from the top, alternating back and forth, down to the bottom.

MIDI Mandala lets you play networked MIDI synths wirelessly using the same circular control concept.
You can run multiple versions at the same on different MIDI channels and control different synth sounds simultaneously.

After touch controls let you change the pitch and loudness of a sound, providing subtle nuances of expression. 16 presets allow you to save your own custom settings.

Unfortunately, the developers don’t mention CoreMIDI or hardware MIDI support.

MIDI Mandala is $.99 in the App Store.