Pico Brothers Guitar Tuner Pro v2.01 S60v5/S^3/Anna Belle Full UnSigned.
Tune your guitar where a conventional tuner is not available.
Pico Guitar Tuner plays reference tones for (E, A , D, G, B, e) which allows you to tune and improve the quality of your guitar's sound.
The tuner also feature a repeat mode, which enables you to concentrate on the tuning while the tone is played.
For best results use headphones.