Stay in tune with this chromatic tuner and pitch pipe for your musical instrument. It tunes guitars, bass guitars, and banjos, but also many other instruments, even your voice (just sing into it!). The built-in pitch pipe lets you play a reference tone for tuning by ear. The tuner requires microphone access, which can be granted in the Settings app, under Privacy > Microphone. For best results, use a headset or microphone separate from the device. FEATURES • Automatically finds the pitch using the microphone. • Shows note name, octave, frequency. • Shows sharpness or flatness in cents and percentage. • Plays reference tones out loud with 4 selectable timbres. • Has 18 built-in tuning systems for 9 instruments. • Can use 8 notation systems (4 types with 2 variations each). • Editable A4 reference frequency, with A440 standard tuning (A4 = 440Hz). • Twelve-tone equal temperament tuning. • Supports upside-down device orientation. • Real-world tested on pianos, acoustic guitars, electric guitars, bass guitars, and other instruments. TUNINGS • Standard Guitar • Guitar: Dropped D • Guitar: Dropped C • Guitar: Open G • Guitar: Open D • Bass Guitar • Resonator Guitar (Dobro) • C6 Lap Steel Guitar • Cello • Viola • Violin • Banjo: Open G • Banjo: Early • Banjo: G Modal • Banjo: Double C • Banjo: Old-time D • Banjo: Open D • Mandolin • Ukulele • Pípá NOTATIONS • English • Fixed do solfège • French • Northern European Tuna Pitch was made by Lucius Kwok and Kasten Searles. Made in NYC.