LAYOUT: Roland Alpha-Juno PG-300 for iPhone 4S by MIDI Target Manufacturer(s):
The first iPhone layout for MIDI Designer Pro!
I hope you don't mind, I modified this layout for iphone 4s. Should be the first iPhone layout here.
It works fine (with irig midi) but does not update itself at program changes from the synth as the app doesn't have the functionality of custom global sysex strings (yet).
Edit (16.05.2013): fixed several value errors and layout issues and added a VCF matrix page.