at first I was skeptical.......

When I first downloaded this app ,the circles just made me dizzy.It was like one of those "freak-out" posters from the 60s So I statrted using another tuning app and tried to tune my 12 string before i started to record. A 12-string can be a real...difficult to tune by ear , so I welcomed a little help to get it just right. To make a long story short, the other app just wasnt precise enough. So....... I revisted this app and went into the preferences and finally calibrated the circles to something I could actually understand. Finally ,my 12-string is in tune and rings like a bell. Im going to use it next on my autoharp (36 strings) Should be fun :)

Rod Patrick about iChromatic Strobe Tuner