# Metric Modulator — Polyrhythm metronome & trainer

> Polyrhythm metronome, beat designer, and drum practice tool for complex rhythms. (iPhone/iPad app by PlusZero.)

- Source: https://appshunter.io/ios/app/metric-modulator/id6784495165 (this page in markdown: same URL + `.md`)
- Developer: [PlusZero](https://appshunter.io/developer/379357859)
- Category: Music
- Price: Free with in-app purchases
- Rating: 5.00/5 from 6 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 24 MB
- Languages: American English
- Released: 2026-10-30
- Data updated: 2026-11-11
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/metric-modulator/id6784495165/reviews.md

## What is Metric Modulator?

Metric Modulator is a polyrhythm metronome, beat designer, and drum practice tool.

• Design a groove on up to 8 tracks, no limit on duration.
• Set a time signature, divide beats up to 12x, repeat measures, set loop points, and modulate the tempo from one measure to the next.
• Mark notes as LH or RH, add accents, flams, rolls, open hi-hats and cross sticks.
• View beats in a grid layout or as traditional notation, with a bouncing-dot cursor to follow along. Tap any measure to play from there.
• Practice playing with touch, mic or MIDI input. The mic learns the sound of your own drums.
• Shows where you are rushing or dragging, tracks your progress and best score.
• Ramp tempo gradually to master a groove, mute bars and random hits to add challenge, or let the beat wait for you at each note.
• Play a beat a set number of times, then stop.
• Share your beats as links and QR code images on social media, or turn a photo of a drum chart into a beat with your favorite AI assistant.
• Customize samples and instruments, and balance tracks in the mixer.
• Smooth 120 Hz display (on supported devices), sample-accurate audio engine, advanced on-device hit analysis, latency compensation.

Developed by a jazz drummer and game programmer duo, this app has everything you need to design, practice, and master complex rhythms.

Free, with no ads. A one-time Pro upgrade unlocks all eight tracks, unlimited saved beats, tempo ramps, dropout, wait mode, practice history, MIDI input, notation printouts, and custom samples.

## Key features

- Design grooves on up to 8 tracks
- Set time signatures and divide beats
- Practice with touch, mic, or MIDI input
- View beats in grid or notation
- Analyze performance for rushing/dragging
- Customize samples and instruments

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro | $9.99 | one-time |


## Is Metric Modulator safe?

Not enough ratings yet to assess Metric Modulator.

## Is Metric Modulator legit?

Metric Modulator has limited verification signals. The AppsHunter Legitimacy Score for Metric Modulator is 58 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/metric-modulator/id6784495165/reviews.md

### 5/5 — Breakthrough for Drum Practice

*2026-11-06*

This is a breakthrough for any drum teacher and student. The teacher can create lesson plans and input them into this app. The lesson plans then are put in the "Library" icon, ready for practice. It has a built-in metronome that can be adjusted to desired tempos, and the lessons are available in two different styled formats that are well designed, easy, easy to use.  There is also a PDF option.  Brilliant new App! Enjoy!

### 5/5 — This makes practicing so much easier.

*2026-11-04*

As a beginner, I often find myself forgetting how to count an exercise. Having the ability to play with the sound of the drum and score my practice has been just what I needed to and make me a better drummer than I thought in a short amount of time.

### 5/5 — Great app

*2026-11-04*

The Metric Modulator is a great app for drummers or any musician who wants to improve their time. I highly recommend it!!

## Frequently asked questions about Metric Modulator

### What is Metric Modulator?

Metric Modulator is a polyrhythm metronome, beat designer, and drum practice tool. It helps users design, practice, and master complex rhythms with advanced features.

### Does Metric Modulator have ads?

No, Metric Modulator is free and does not contain advertisements. It offers a one-time Pro upgrade for additional features.

### What devices does Metric Modulator support?

Metric Modulator is supported on iPhone, iPad, and iPod. It features a smooth 120 Hz display on supported devices.

### How does Metric Modulator help with practice?

It shows where you are rushing or dragging, tracks progress, and offers features like tempo ramps and wait mode to challenge and improve your playing.

### Can I use my own drums with Metric Modulator?

Yes, you can practice using mic input, and the app learns the sound of your own drums. It also supports touch and MIDI input.

### What features are unlocked with the Pro upgrade?

The Pro upgrade unlocks all eight tracks, unlimited saved beats, tempo ramps, dropout, wait mode, practice history, MIDI input, notation printouts, and custom samples.

### How often is Metric Modulator updated?

The latest version is 1.0.2, released on November 2, 2026. Updates are frequent, ensuring reliability and new features.

### What is the age rating for Metric Modulator?

Metric Modulator has an age rating of 4+. This indicates it is suitable for a wide range of users, including younger musicians.

## Version history (last 4 releases)

### 1.0.3 — 2026-11-08

New in 1.0.3:
• Overdub: swipe Play sideways and play a beat in by tapping, on a drum near the mic, or over MIDI. It's quantized and layered onto your beat, with an undo per bar.
• Brushes (Pro): Jan's brush kit, with sweeps you hold on the snare.
• Ruffs: a new two-grace stroke, above flam.
• Library: Paste link, for beat links that open in your mail app instead of here, and a search box once you have lots of beats.
• Wait mode forgives a late kick.
• Lower audio latency on Android.

### 1.0.2 — 2026-11-02

Fixes and polish:
• Pro unlocks reliably from an offer code or Restore Purchases, including when Screen Time limits in-app purchases.
• The tap pads stay clear of the home indicator and the screen's rounded corners.
• The share QR code animates in.

### 1.0.1 — 2026-10-31

A big update. Highlights:

NEW WAYS TO PRACTICE
• Wait mode (Pro): the playhead waits at each of your notes until you hit it, so you can learn a beat at your own pace.
• Track roles: tap a track's dot to cycle Hear, Play and Mute. Play leaves that track to you and keeps scoring it, so you can start with a couple of drums and take over the rest. Solo is in the mixer, which can now also sound your own MIDI notes and taps.
• Long-press Play to play a beat a set number of times, then stop.
• Mic training learns the sound of your own drums (Setup, then Instruments), and the mic tells you when the kit is too loud for the device's microphone.

NEW STROKES AND SOUNDS
• Hold a note for the stroke menu: accent, flam, press roll, open hi-hat or cross stick.
• A new built-in kit recorded by Jan van Voorst van Beest, adding tom, floor tom, hi-hat foot and crash.
• Four tracks free (up from two), eight with Pro.

SHEET MUSIC
• Tap a measure to play from it, with a count-in of 1 to 3 bars.
• A bouncing-dot playhead that hops from note to note.
• Choose a Drum kit or Lines staff for each beat, under Scoring in a track's menu.

ALSO NEW
• Transcribe with AI, at the bottom of the Library: turn a photo of drum notation into a beat with ChatGPT, Claude or Gemini.
• A shared link that can't open now says why.
• Bigger icons, a clearer first-run tour, and fixes for Larger Text and small screens.

### 1.0 — 2026-10-30

No release notes.

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## Related topics

[modulator](https://appshunter.io/ios/topics/modulator)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-11.*