Instrument tuner for iPhone and Apple Watch

iTuner Pro

Tune guitar, bass, ukulele, violin, cello, mandolin, banjo, and more with real-time pitch detection, clear cents feedback, and a focused interface built for practice and performance.

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Fast feedback when tuning matters.

iTuner Pro keeps the important signal visible: the note you are playing, frequency, and how far you are from the target pitch.

Real-time pitch detection

Use the microphone to detect pitch live and see frequency changes as you tune.

Cents deviation

Clear deviation feedback helps you understand whether the note is sharp, flat, or in tune.

Adjustable reference

Set A4 anywhere from 430 Hz to 450 Hz for different ensembles and practice needs.

Built-in presets

Choose common tunings for guitar, bass, ukulele, violin, viola, cello, mandolin, and banjo.

Apple Watch support

Open the companion watch app and tune from your wrist when your phone is not nearby.

Clean interface

Light and dark themes keep the app comfortable in a lesson room, studio, or stage corner.

Made for everyday tuning.

Whether you are warming up before a lesson, checking intonation during practice, or getting ready to record, iTuner Pro gives you a quick read on the pitch without extra setup.

Select a preset, play a note, and adjust until the feedback settles in tune.

Guitar Bass Ukulele Violin Viola Cello Mandolin Banjo