GoodTuner app for iPhone and iPad

GoodTuner is as simple and intuitive as a clock

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Unique Features:
1.Clear clock style user interface
2.Support 9 instruments and chromatic

Other Features:
3.Precise to ±1 cent(1 cent = 1/100 semitone)
4.Selectable Notations(CDE,DoReMi,…)
5.Adjustable Reference Pitch(A4) frequency in 0.1 Hz increments from 340.0 to 540.0 Hz
6.Support Custom-Tuning(in 0.1 cent increments)
7.Selectable sensitivity

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Support more than 50 tunings for instruments:
1.Guitar
2.Guitar(7 String)
3.Bass
4.Mandolin
5.Banjo
6.Ukulele
7.Violin
8.Viola
9.Cello
10.Chromatic ---------------- General 12 Equal Temperament Instrument

ps: You can use Chromatic mode to tune any tuning.