Pegbox Tuner: Guitar, Ukulele

A fast, accurate instrument tuner that's free for every instrument. No ads, no subscription, no account.

Open Pegbox and play: it's listening straight away. It finds the string you're tuning, shows how far off you are in cents, and turns green when you're in tune.

EVERY INSTRUMENT, FREE
• Guitar and 7-string guitar
• Bass and 5-string bass (down to low B)
• Ukulele and baritone ukulele
• Violin, viola, cello and double bass
• Mandolin, banjo and tenor banjo
• Chromatic mode for any instrument or voice, with the note and octave

ACCURATE AND STEADY
• Reads to a fraction of a cent, tested against synthetic strings with harmonics and room noise
• Holds steady on low strings: bass E (41 Hz), drop tunings and 5-string low B
• Auto string detection, or tap a string to tune just that one
• A tick on each string once it's in tune
• Play a reference note for any string

PEGBOX PRO: ONE PAYMENT, YOURS FOR GOOD
• Alternate tunings: Drop D, Drop C, Drop B, DADGAD, Open G, D, E, A and C, half and full step down, Nashville,
low-G ukulele, banjo Double C and G modal, violin cross tunings and more
• Your own custom tunings, saved per instrument
• A4 calibration from 415 to 466 Hz (432, 442 and 443 one tap away)
• A sample-accurate metronome with tap tempo and accented first beats

PRIVATE
Sound from the microphone is analysed on your phone as you play. Nothing is recorded, stored or sent anywhere.

Recent changes:
Keeps following your string as it fades, so you can turn the peg without plucking again.