PTuner: Instrument Tuner

PTuner — tune every instrument with one app.

Whether you just picked up a guitar or play every day, tuning comes first. PTuner turns every pluck, bow and strum into clear, steady, trustworthy visual feedback.

[Single-note tuning — one note, dead on] Play a string and see the note name, frequency and cents deviation in real time. A needle-style meter with a green in-tune zone shows sharp or flat at a glance, so you no longer have to guess by ear.

[Polyphonic tuning — the whole instrument at once] PTuner detects several strings at the same time and shows each string's deviation independently. Sweep all six strings and check the entire instrument in one pass.

[54 instruments, East and West] Guitar, bass, ukulele, violin, cello, erhu, guzheng, pipa, ruan, guqin, dombra, sitar and more — from Western strings to Chinese traditional instruments and world instruments. 54 instruments and 134 tunings built in.

[Custom tunings — find your sweet spot] Every instrument resonates differently. Set any number of strings, any pitch and any cents offset, then fine-tune each string until chords ring at their best. Create, edit and save your own tuning, ready the next time you open the app.

[Chord recognition — hear what you play] Recognize the chord you are playing in real time, with its name and component notes. An extra ear for practice, writing and learning songs by ear.

[Built for the stage and the practice room] - Dark, professional interface that stays readable in low light - Adjustable reference pitch from 400 to 480 Hz - Needle and bar indicators - Fast, balanced and stable response modes - Available on iPhone, iPad and Mac - English, 简体中文, 繁體中文, 日本語, 한국어, Español, Deutsch, Français, Italiano

Get in tune, and hear music the way it was meant to sound.

Terms of Use (EULA) This application is licensed under the Apple Standard End User License Agreement (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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