The only tuner you'll ever need.

Precise to a tenth of a cent. Every tuning, every instrument. Completely free, no ads, no account.

Open the tuner Add to home screen
StandardA4 440 Hz
E2
+18.0¢
Tune down
Intonation check

Play the 12th fret harmonic and let it ring.

SettingsDone

Tuning

ChromaticStandardDrop DOpen GPedal steel E9Lap steel C6BassMandolin
DisplayMeterStreamStrobe
In tune within±0.5±1±2
OffsetsSweetened thirds
Hum filterOffOn

Everything other tuner apps get wrong, gone.

What you get

Pro tuner features, for everyone.

Precise

Reads to a tenth of a cent, with a fine ±5 cent scale for the last bit.

Holds the reading

Keeps reading as the string rings out, and holds the last value when it fades.

Meter, stream or strobe

Pick the display you like. Strobe is the most precise.

Steel guitar ready

E9 and C6, offsets on every string, sweetened thirds, and your own custom tunings.

Intonation check

Compares the 12th fret harmonic to the fretted note and tells you which way to move the saddle.

Built for the stage

Huge readout, light and dark mode, hum filter, capo and drop, and it works with no signal.

Every tuning, free

Guitar, steel, bass, strings, and anything chromatic.

Get the app

Put it on your home screen.

  1. 1Open onlytuner.com/tuner in Safari
  2. 2Tap Share
  3. 3Tap Add to Home Screen
  4. 4Open Only Tuner from your home screen

It gets its own icon, opens full screen, and works without signal.