Nearly Useless
Those who like this app have tone deafness. Not only is the Polytune mode inaccurate, so is the single string mode. Your guitar will sound like #$% after using this tuner. And think about it - why "get close in multi string mode, then fine tune?" thats a waste of time and a gimmick. Get the Peterson or tune by ear.
Dantrino about
PolyTune, v1.1.0