# Groove Lab Metronome vs HarmoniaMASTER

The clearest difference is update cadence: HarmoniaMASTER at every 5 days against Groove Lab Metronome's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Groove Lab Metronome costs $2.99 and HarmoniaMASTER $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Groove Lab Metronome ships an update every 4 months, HarmoniaMASTER every 5 days. The most recent releases landed on October 31, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Groove Lab Metronome | HarmoniaMASTER |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Paid | — |
| Size | 5 MB | 2 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Nicholas Mahon](https://appshunter.io/developer/1888194985) | [Mina Iwabuchi](https://appshunter.io/developer/1889826002) |

## What reviewers say

### Groove Lab Metronome

[App page](https://appshunter.io/ios/app/groove-lab-metronome/id6761191968)

Create complex practice tracks with dynamic tempo changes and a groove-aware drum machine. Designed by musicians, this app offers a distraction-free experience for focused practice on any instrument.

**Highlights:** Multi-measure sequence builder, Tempo changes (accelerando, ritenuto), Custom time signatures and beat groupings, Groove-aware drum kits, Background playback, Save and organize presets

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### HarmoniaMASTER

[App page](https://appshunter.io/ios/app/harmoniamaster/id6761472671)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Groove Lab Metronome free?

Groove Lab Metronome costs $2.99, with no in-app purchases.

### Is HarmoniaMASTER free?

HarmoniaMASTER costs $2.99, with no in-app purchases.

### Do Groove Lab Metronome or HarmoniaMASTER have ads?

Neither Groove Lab Metronome nor HarmoniaMASTER shows ads.

### Which is updated more often, Groove Lab Metronome or HarmoniaMASTER?

Groove Lab Metronome ships an update every 4 months, and HarmoniaMASTER every 5 days. Most recently, Groove Lab Metronome was updated on October 31, 2026 and HarmoniaMASTER on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*