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Tune, the tuner
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Tune, the tuner
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Tune

Chromatic tuner for iPhone
Coming soon

Tune is a chromatic tuner app for iPhone, for guitar, bass, ukulele, violin and voice. Play a note. The needle swings, and the letter turns green when you are in tune.

Tune listens through the microphone and shows how far you are from the note, on a meter with a needle. It works for guitar, bass, ukulele, violin, voice, anything that holds a pitch.

Leave the knob on AUTO and it finds the note for you, or set it to the string you are tuning.

Tune a guitar string by string, check a violin against A 440, or find the note you are singing.

Tune, chromatic tuner for iphone, seen from the front at an angle
Tune from the back
A needle with weight

A needle with weight

It swings, overshoots a little and settles, like a real meter. The note glows red when you are off, amber as you close in and green when you are there.
Twelve notes and AUTO

Twelve notes and AUTO

On AUTO, Tune follows whatever you play. Turn the knob to a note to tune one string at a time.
Tune by ear

Tune by ear

Switch TONE on and the device holds the note the knob is set to, in a tuning fork's voice, until you switch it off.

Specifications

Meter
−50 to +50 cents, with the note in lit segments
Reference
A4 = 440 Hz
Range
45 Hz to 1.8 kHz
Privacy
Sound is analysed on the phone and never recorded
Requires
iPhone with iOS 18 or later

Questions

Which instruments does Tune work with?

Anything that holds a pitch: guitar, bass, ukulele, violin, cello, brass, woodwind and voice. It listens through the microphone, from 45 Hz to 1.8 kHz.

Is it a chromatic tuner?

Yes. On AUTO it finds the nearest of the twelve notes; turn the knob to a note to tune one string at a time.

How accurate is it?

The meter reads from −50 to +50 cents around the note, with A4 at 440 Hz.

Does it record me?

No. Sound is analysed on the phone as it comes in and is never stored or sent anywhere.

Can I tune by ear?

Switch TONE on and Tune holds the reference note of the knob, in a tuning fork's voice, until you switch it off. On AUTO there is no note to hold.

Does Tune exist as a physical device?

Not yet. Tune is a concept made as a digital object: designed and engineered like a real tuner, but it exists only on your iPhone. If you make hardware and would like to produce it in commercial quantities, we are open to collaboration: hello@objectism.app.

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