StrumTune

StrumTune tunes your guitar, bass, ukulele and more — accurately, and completely free.

No ads. No subscriptions. No accounts. Nothing is collected, and the app never connects to the internet.

TUNE ANY STRING
Play a string and StrumTune names it, shows how far off you are in cents, and turns green the moment it lands. The needle settles quickly, so you spend less time watching the screen and more time playing.

CHROMATIC MODE
Not every note is an open string. With a capo on, on a fretted note, or with an instrument that has no preset, chromatic mode reads any of the twelve semitones instead of forcing your note onto the nearest string.

MANUAL MODE
Prefer to tune by ear? Tap a string to hear a clean reference tone and match it. Works even without microphone access.

9 INSTRUMENTS, 25 TUNINGS
Guitar (Standard, Drop D, Drop C, Half Step Down, Full Step Down, Open G, Open D, Open E, Open C, DADGAD), 7-string guitar, bass, 5-string bass, ukulele, mandolin, banjo, violin and cello.

YOUR OWN TUNINGS
Set any note on any string, save it under a name, and it is waiting for you next time. Edit or delete it whenever you like.

BUILT-IN METRONOME
30 to 240 BPM, time signatures 2/4, 3/4, 4/4 and 6/8, tap tempo and an accented downbeat. The click is scheduled sample-accurately, so the tempo never drifts.

MADE FOR PLAYERS
- Left-handed mode mirrors the fretboard
- Reference pitch adjustable from 430 to 450 Hz for orchestras and period instruments
- Note names as C D E or Do Re Mi
- The screen stays awake while you tune
- Your instrument and tuning are remembered between sessions

Everything listed above is included. There is no paid tier and nothing to unlock.