Metro X: Tune. Keep time. Play along. On every device you own.

Metro X is one app for every musician: a tuner accurate to 0.1 cent, a metronome you can see, piano accompaniments to play along with, and your sheet music, with every tool floating right on the score. One account on iPhone, iPad, iPhone Duo, Apple Watch, Android and metrox.app. Free to start; Metro X Pro from $2.99 a month with a 7-day free trial.

Download on the App Store Get it on Google Play

Five tools, one score

  • BEAT: Metronome and the ORB. 50 to 600 BPM, subdivisions, an accented downbeat, meters from 2 to 12, tap tempo and Bluetooth delay calibration. The patent-pending ORB floats on top of your score and pulses with every beat. More about the metronome
  • TUNE: Tuner to 0.1 cent. Accurate from the lowest bass string to the top of the piano. Halo, Arc, Line or Strobe views, strings in pure fifths, a drone with fifth and octave, seven temperaments and Concert A from 410 to 480 Hz. More about the tuner
  • NOTE: Score reader. A PDF library with Recent, Starred, Sets and search, free public-domain scores from IMSLP, annotation with Apple Pencil, a stylus or your finger, Bluetooth page-turner pedals, and scores that sync to every device. More about the score reader
  • PLAY: Piano accompaniment (new). Accompaniments for voice, violin, cello, flute and clarinet from public-domain scores. Steady, Practice or Expressive; 75, 90, 100 or 110% of the written tempo; loop any bars, repeat with a rest, climb a tempo ladder and save presets. More about Play
  • SYNC: Sync rooms (patent pending). Everyone in the room hears the same beat, on iPhone, iPad and Android together, with Apple Watch and the web app following. Hosting a room is free. More about Sync rooms
  • Apple Watch. A haptic metronome on your wrist that follows the phone's beat or a Sync room, plus remotes for the metronome, the Play player and page turns. More about Apple Watch

Every device on the stand

On iPad, on the inner display of iPhone Duo and on unfolded foldables, Metro X switches to a wide layout with the full page of your score and the tools beside it. Android phones, tablets and foldables run the same app, with annotation by S Pen or finger, and a Sync room can mix Android, iPhone and iPad on one beat. The web app at metrox.app has the Beat, Tune, Note and Play tabs in your browser.

Plans

Free: tuner, metronome and the ORB, Play accompaniments, the score reader with IMSLP, Sync rooms and the Apple Watch app, with no ads. Metro X Pro adds annotation on every device, cloud backup and import from iCloud, Google Drive and Dropbox, every metronome sound pack and every ORB colour: $2.99 a month or $19.99 a year with a 7-day free trial, or $49.99 once for lifetime access. Plans, schools and ensembles

Frequently asked questions

What is Metro X?

Metro X is a tuner, metronome, piano accompaniment player and sheet music reader for iPhone, iPad, iPhone Duo, Apple Watch and Android, with patent-pending Sync rooms that keep every device in a room on one beat. The same account works on metrox.app.

How accurate is the tuner?

To 0.1 cent, from the lowest bass string to the top of the piano, with strings in pure fifths, a drone and seven temperaments.

What is the Play tab?

Piano accompaniments built from public-domain scores. Choose Steady, Practice or Expressive, slow to 75 or 90%, loop any bars, repeat with a rest, and let the tempo ladder step each repeat up to 100%. New pieces arrive in the app as they are added.

Does it work on Apple Watch?

Yes. Metro X on iPhone includes a watch app (watchOS 10 or later) with a haptic metronome and remotes for the metronome, the Play player and page turns.

Is Metro X free?

Yes, with no ads. Pro is optional: $2.99 a month, $19.99 a year with a 7-day free trial, or $49.99 for lifetime access.

Download Metro X

Free on the App Store and Google Play. Requires iOS or iPadOS 15.1 or later, watchOS 10 for the Apple Watch app, or Android 8.0 or later. App Store → Google Play →