I have a guitar, yet being completely tone deaf makes playing the thing quite a challenging hobby for me. Although I'm fine once I'm playing the chords, I find it difficult to tune it because I can't regonise the notes. I have an electronic tuner but I found that AP Tuner worked much better for me because of the sheer amount of options it presents you with, such as the ability to view and listen to a graph of musical notes and a library of sounds that can be customised by the user.

The program can detect all audible tones and is accurate to within 0.1 cents. I found the interface pretty straightforward to navigate, although the lack of a decent glossary means it can be tricky if you aren't well-versed in musical terminology. Thankfully, however, tone deafness is not a problem when using the app.