4pockets.com has released a complete guitar multieffect software for 15 USD which works on Windows Mobile-based Pocket PCs. Its name is Pocket Stompbox, and has a set of nine effect types: overdrive/distortion, phaser, chorus/flanger, delay, reverb, parametric EQ, graphic EQ, pitch shifter and tremolo. You can even reorder the units within the effect chain.
Besides effects the software provides a metronome and a 440 Hz test tone (unfortunately there is no tuning capabilities, why?) - and also has a loop recorder which records audio and plays back constantly (recording time depends on the memory size).
You can buy Pocket Stompbox here.
