Tonegraph - Instrument Tuner app for iPhone and iPad

Tonegraph app is a chromatic instrument tuner that allows you quickly and accurately tune your instrument. Further, this allows you to watch the spectrum of sounds and know the overtone structure of your instrument or your voice. The working range of the app is 30 Hz to 4000 Hz. The exact pitch name and cents of the sound is displayed. Works as guitar tuner, violin, flute, trumpet and more

Features
-Analog like chronograph
-Shows pitch name
-Shows sound spectrum and waveform
-Many color variation of spectrum chart
-Selectable detection threshold
-Display range is -50 to +50 cent