Metro X TUNE: a tuner accurate to 0.1 cent, for every instrument
From the lowest bass string to the top of the piano. Halo, Arc, Line or Strobe views, strings in pure fifths, a drone, seven temperaments and Concert A from 410 to 480 Hz, on iPhone, iPad and Android.
What you get
- 0.1 cent, full range. Shown to a tenth of a cent across the whole range.
- Four views. Halo (the default), Arc, Line or Strobe, plus a pitch trace of the last 8 seconds.
- Strings in pure fifths. Violin, viola, cello and double bass tune the way string players tune by ear. Automatic string detection, or lock a string.
- Drone. A sustained reference with a fifth and an octave, in three sounds.
- Every instrument. Violin, viola, cello, double bass, guitar, bass, ukulele, mandolin, banjo, harp, piano, voice, and transposing winds and brass. Alternate tunings and capo.
- Concert A and temperaments. 410 to 480 Hz; equal, just, Pythagorean, meantone, Werckmeister III, Vallotti and Kirnberger III.
Frequently asked questions
How do I tune a violin with an app?
Open the tuner in Metro X, allow the microphone and choose Violin. Play each open string (G, D, A, E) and let it ring: the display shows the note, how many cents off you are and whether to raise or lower. Violin strings are tuned in pure fifths, the way string players tune by ear, and you can tap a string to lock it.
Is a phone tuner accurate enough for cello, viola and double bass?
The Metro X tuner is accurate to 0.1 cent across the full range, from the lowest double bass string to the top of the piano. Choose viola, cello or double bass and the strings are set in pure fifths, with automatic string detection.
Can I tune to A = 442 or A = 415?
Yes. Concert A can be set anywhere from 410 to 480 Hz, so orchestras at 442 and baroque ensembles at 415 are covered. Display as B♭, E♭ or F shows written notes for transposing instruments.
Which temperaments does the tuner support?
Equal temperament is free. Metro X Pro adds just major and minor, Pythagorean, meantone, Werckmeister, Vallotti and Kirnberger on any root, plus a drone with a fifth or an octave and an 8-second pitch trace.
Does the tuner record or upload my playing?
No. Sound is analysed in real time on your device and is never recorded, stored or uploaded, so the tuner also works without an internet connection.
Is the Metro X tuner free?
Yes. The tuner with all five views (String, Halo, Arc, Line and Strobe), every instrument and equal temperament is free on iPhone, iPad, Android and the web, with no ads.
Related
Then keep time with the metronome → Try the free online tuner in your browser →