TuneORama (iOS) app for $0.99

Two tuners in one! Along with its completely foolproof automatic tuner, Tune-O-Rama also incorporates an equally painless chromatic tuner that you can access at the touch of a button. With its professional-grade accuracy, ease-of-use and ridiculously low price-tag, Tune-O-Rama is *the* tuner to own for any serious musician. There are no regrets here.++