Tunero
A tuner that just tunes
Tunero is a simple chromatic tuner for iPhone. Open it, play a note, and it shows you what you are playing and how far off you are — down to the cent. No ads, no account, no subscription, no tracking. Just the tuner.
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Chromatic, automatically
Auto mode recognises any note of the chromatic scale, so Tunero works with guitar, ukulele, violin, brass, voice — anything with a pitch. Prefer to tune against one target? Lock a single note and stay there.
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Readable at a glance
A large note letter, its octave, and a needle showing the deviation in cents, with the neighbouring semitones for context. Green means you are in tune.
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Adjustable sensitivity
One slider adapts the app to a quiet room or a noisy stage, so it hears your instrument and not everything else.
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Private by design
Pitch is analysed in real time on your device. Audio is never recorded, stored or sent anywhere, and Tunero works without an internet connection.
Tunero in automatic chromatic mode