This is a reallygreat app. Way more accurate and stable than any other than I have used but you have to pick your note. I really taught me that if the harmonics are out of tune on a string the note always sounds wrong even when its fundamental is in tune - dirty strings are the usual cause. Fantastic, I'm sick of FFT based tuners that have poor sensitivity and instability. A bit cumbersome to use but well worth it. I use it for my mandolin which is a bitch to tune. Finally I can get a consistent tuning. Thanks
String tuner Works great but crashes from time to time.
* Now tracking 6 harmonics