Microtonal-capable app. Again!

Here is a screen capture of the iPod Touch/iPhone/iPad app I told you
about a few ago.
I'd be very grateful to get feedback on how it looks, what could be
improved, etc.
First let me explain you.I removed all controls and sliders to get a
clean screen.
Western notes are notated as reference. Root is squared in red, blue
area is its natural minor relative. All yellow markers are 12ET, green
markers are 24ET. Every other line is Pythagorean, extended Pythagorean
and 665ET. All semitones and infrachromatic moves are made horizontally,
and each row (string) is vertically a just 4th from the other, so this
is entirely isomorphic. Moves up or down on the same "cube" increase or
decrease the amount of 8ve and 5th harmonics. Diagonal lines are a view
of harmonics and partials. The whole harmonic pattern can be "moved" in
real time, up to ten notes at the same time (so, ten fingers.)
Is it just masturbating Objective-C code or can it have any use in
real-life situations?
It works with MIDI and WiFi MIDI.
Thanks for your feedback, if any. I could record some music with it, but
the sound engine is limited. Gain, sine/sawtooth/square and of course
reverb plus aftertouch.
<a
href="http://s998.photobucket.com/albums/af106/JBCollinet/?action=view&c\
urrent=6018ea9e.jpg" target="_blank"><img
src="http://i998.photobucket.com/albums/af106/JBCollinet/6018ea9e.jpg"
border="0" alt="Photobucket Pictures, Images and Photos" /></a>
/Rowdy JB