Chromatic tuner and metronome

Tune precisely. The sound stays on your device.

Wi-Tuner shows the note, the cents and a real strobe. It also includes a metronome. It runs in the browser, on Android and on iOS, with no account.

Key features

Built to tune quickly and keep practicing, with the data on the device.

Chromatic tuner
Note, octave, hertz and cents stay visible. The needle moves without a dead zone.
Strobe
The pattern rests at the center and drifts with the beat. Up to four harmonics can be shown.
Metronome
30 to 300 BPM, your own meter, accents and several tones. It can run while you tune.
Tunings
Presets for guitar, bass and other instruments, plus editable temperaments.
Offline
The PWA keeps the app on the device. No account is required.
A4 reference
You choose the reference pitch. A tone with harmonics keeps low notes audible.

Each preset carries its strings and tunings. Chromatic mode does not assume an instrument.

Open Wi-Tuner
Use the browser or install the app. The web and mobile versions share one interface.
Allow the microphone
The permission is only for measuring pitch. Audio is processed in memory. It is not recorded or uploaded.
Play a note
The needle, the cents and the strobe show the offset. The metronome can run at the same time.

There are no accounts and no third-party analytics. Preferences stay on the device, and you can erase them.

Does Wi-Tuner record what I play?

No. The microphone feeds an in-memory pitch estimate. There is no audio file and no upload.

Do I need an account?

No. There is no sign-up. Settings stay on the device.

Does it work offline?

Yes. The web version is a PWA. After you open it once, the interface loads without a network.

Which instruments are included?

Guitar, bass, bowed strings, ukulele, banjo, mandolin and piano, plus a chromatic mode.

Can the metronome run while I tune?

Yes. The metronome uses its own audio clock and does not share the microphone context.