QuartzMetro 4+

metronome app

ON Science Japan

Designed for iPhone

    • 4.0 • 2 Ratings
    • Free

iPhone Screenshots


This is an app of the metronome.
Accurate: An error of less than 22.7 micro-second.(based on theoretical calculation)
(1 micro-second is equal to 0.001 milli-second.)
Simple: Drag the white ring to change tempo.
Tone quality is like real metronome tone.
Low power consumption during use.

This app is for free. Made in Japan!

What’s New

Version 1.1.0

Updated for 64bit app
Compatibillity with iOS 13

Ratings and Reviews

4.0 out of 5
2 Ratings

2 Ratings

Mr. Bob 77 ,

Good basic metronome

For what a metronome is supposed to do, this gets it right. Accurate and easy to make quick adjustments. Good interface is not too touchy like most other metronomes. While it doesn't have any bells or whistles like many other free metronome apps, it's a good basic unit. The volume is quite weak and if anything were to be changed without making it more complex it would be that.

While there are other free ones that can do more, many are not accurate. Good bare bones metronome.

Dhhdfsehnicdrutenjiwdhji ,


Plane Metronome. Daddy like.
Very smooth action.
Fascinating in it's own simple way.
Kinda cool.

App Privacy

The developer, ON Science Japan, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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