4Pockets Chromatic Guitar Tuner 1.0

the author of this app says:

This is a real time guitar tuner for your PC and Pocket PC. It can determine the frequency, musical note and octave for each of your guitar strings.

The program incorporates harmonic error correction technology and the ability to compensate for notes played in the wrong octave, allowing you to tune using either open strings or harmonics.

It also provides a built-in tone generator, the ability to transpose up and down by one to three semi-tones and a number of popular tuning standards.

Requirements

• StrongARM or XScale Processor