Howling Tuner

A tuner for violin, cello, guitar and ukulele, with a live pitch plot and a metronome.

Coming soon to Google Play Free · Android 8.0 or newer

A husky howling, the Howling Tuner app icon

Violin tuning screen with the needle centered and A4 reading +1.0 cents, in tune — Detects which string you're playing

Cello tuner locked to the G string, reading G2 in tune above the pitch plot — Lock to one string for steady low notes

Metronome panel set to 100 beats per minute, with tap tempo and beats per bar — Metronome with tap tempo

Settings for reference pitch, in-tune tolerance, smoothing and other stability options — Choose how steady the readings are

Tune fast

Pick your instrument and it detects which string you're playing, or tap a string to tune just that one, which keeps low cello and guitar strings steady. The needle turns green when you're in tune, and each string gets a check mark once it holds. Long-press a string to hear its reference note.

Alternate tunings

Guitar: standard, Drop D, half step down, full step down, Drop C, DADGAD, Open G and Open D. Ukulele: standard (high G), low G, D tuning and baritone. Set the reference pitch anywhere from A4 = 415 to 466 Hz.

See your pitch

A scrolling piano-roll plot shows your pitch over time, with your strings marked. Pinch to zoom, drag back through what you just played, or go full screen. Handy for checking intonation while you practice scales.

Steady readings

Smoothing (off, low, medium or high) calms the needle but still follows quickly when you turn a peg. The tuner also ignores octave jumps, the sharp pluck attack and noisy fading notes. Each of these can be switched on or off.

Metronome

Start it right from the pitch plot and drag it sideways to change the tempo: 30 to 250 BPM, with tap tempo and an accented first beat. The tuner skips its clicks so they don't show up as notes.

Audio stays on your phone

Sound is analyzed on your device and never recorded or sent anywhere. The app is free, supported by one small banner ad, with no full-screen ads. Read the privacy policy.