This is easily the best tuning app
This is my favorite tuning application and is actually more accurate than my Korg electronic tuner. Works very well with a variety of instruments- I use it on my violin, mandolin and trombone with very precise accuracy. The people who complain that background noise interferes with tuning are right- but you will find that with any electronic tuner period. Fantastic app and definitely worth the download!
Telekidnetic about
Pano Tuner Lite