A dead simple, rock solid guitar and string instrument tuner. You will love it's hands free operation and its big, bright and stable display. There is no fluff in this app, just the best and easiest to use electronic tuner available for the iPhone. Standard, chromatic and alternate tuning presets for guitar. Also presets for banjo, ukulele, mandolin, violin, viola, cello and more. Now the same highly rated tuner is available as a free ad supported app.