METRO X — See Your Rhythm. Play in Time, Together.

METRO X is the free practice app for musicians — a metronome you can see, and a beat everyone shares. Visual rhythm with the patent-pending Orb, real-time ensemble sync across every iPhone and iPad in the room, a PDF sheet music viewer with annotation, and a ±1 cent chromatic tuner — all in one app, free for iPhone and iPad.

Download METRO X on the App Store

Everything a serious musician needs in one app

METRO X replaces the four apps most musicians cobble together — metronome, tuner, sheet music reader, and a way to keep an ensemble in sync — with a single app designed for practice, rehearsal, and performance.

  • BEAT — Professional Metronome. 50–600 BPM range, complex time signatures, subdivisions, and tap tempo. Visual floating Orb so you can see the beat without looking away from your music.
  • NOTE — Sheet Music Reader. Import any PDF, annotate with pencil and highlights, organize your library, and read with the floating Orb metronome on top of your score.
  • SYNC — Patent-Pending Multi-Device Sync. Every iPhone or iPad in the room locks to the same beat in real time. No cables, no in-ear clicks, no audio engineer. The first consumer app to solve ensemble drift.
  • Digital Tuner. Real-time pitch detection with cent precision. Works for piano, violin, guitar, brass, woodwinds, and orchestral instruments.

Built for how musicians actually practice

Students and beginners

Practice rhythm with a clear visual beat that doesn't fight with your ears. Build a rock-solid internal pulse with subdivision controls, and learn new pieces faster with the loop-and-step-up method.

Chamber groups and bands

End the rehearsal-room metronome drift problem. One person hosts a SYNC room, everyone else joins with a tap, and every device follows the same tempo and downbeat. Works for quartets, jazz combos, rock bands, and orchestral sectionals.

Music teachers

Run group lessons where every student sees and hears the same beat. Annotate scores to send to students, and use SYNC to control tempo for the whole class from your own device.

Working musicians

Click track on stage without a stage box, in-ear monitor mix, or an extra hardware purchase. The floating Orb gives you the beat visually so audio clicks don't bleed into your microphones.

Patent-pending SYNC technology

Two metronomes started at the same time on two different phones drift apart in seconds — that's basic physics, not a bug. METRO X SYNC turns one device into a master clock that broadcasts the tempo, downbeat, and beat number to every other device in the room with sub-millisecond alignment. It's the first consumer-grade solution to ensemble drift, and it's free in the basic tier.

Read how SYNC actually works →

Frequently asked questions

What is METRO X?

METRO X is an all-in-one metronome and sheet music app for iPhone and iPad. It combines a professional metronome (50–600 BPM), digital tuner, sheet music PDF viewer with annotation, and patent-pending SYNC technology with a floating Orb beat visualizer for multi-device ensemble practice. Available as a free download.

Is METRO X a good alternative to a dedicated sheet music reader?

Yes. Premium sheet music apps focus on PDF management, while METRO X covers sheet music plus metronome, tuner, and consumer-grade multi-device SYNC. If you currently run a separate sheet music reader plus a separate metronome app, METRO X replaces both for free.

Does METRO X have sheet music annotation?

Yes. Import any PDF, mark it up with pencil and highlights, and use the floating Orb to keep time without taking your eyes off the score. The combined sheet-music + visual-metronome view is patent-pending.

Can multiple devices sync together?

Yes. SYNC lets multiple iPhones and iPads in the same room — or in different rooms, over Wi-Fi or cellular — lock to the same tempo and downbeat in real time. Use it for chamber music, orchestra sectionals, group lessons, or remote band practice.

Is METRO X free?

Yes. Free to download, with no ads. The professional metronome, tuner, and basic SYNC rooms are free. Pro features (advanced annotation, larger SYNC rooms) are available as an upgrade.

Which instruments does METRO X work for?

Every instrument. The metronome, tuner, and sheet music reader are instrument-agnostic. Common uses include piano, violin, viola, cello, guitar, drums, brass, woodwinds, and full orchestral practice.

From the METRO X blog

Download METRO X

METRO X is a free download for iPhone and iPad on the App Store. Requires iOS 15 or iPadOS 15 and later. Get METRO X on the App Store →