Tuner Wear use your device microphone record and convert the sounds to frequency to the nearest note for quick and easy tuning of your prefered instrument. Works on guitar, twelve string's guitar, bass, ukelele, violin, cello, viola, double bass, piano, harp, sitar, guqin, biwa, shamisen, sanshin, konghou, koto, etc... Features: - Two decimal precision; - Color dynamic scale, the green is used as the note reaches; - Sensitivity auto-adjusted; - Recognizes each of the twelve chromatic (semitone) steps of the equal-tempered scale (C, C#, D, D#, E, F, F#, G, G#, A, A#, B); - Works on your smartwatch :-) - Guitar tuner; - Violin tuner; - Bass tuner; Future features: - Temperaments; - A4 calibrate; - Sensitivity manual ajusts; - Color ajusts; - Sound samples; - Standard tunnings of most popular instruments;