# Metronom 137 vs HarmonicAlly

The clearest difference is iOS requirement: HarmonicAlly at 15.1 against Metronom 137's 18.6. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Metronom 137 ships an update every 10 days, HarmonicAlly fortnightly. The most recent releases landed on October 8, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Metronom 137 | HarmonicAlly |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/harmonically/id6765767065/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 10 days** | Fortnightly |
| Monetization | — | Free |
| Size | 6 MB | 38 MB |
| Requires iOS | 18.6 | **15.1** |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thibault Ducray](https://appshunter.io/developer/954994222) | [Lee Oskar Enterprises](https://appshunter.io/developer/1892528047) |

## What reviewers say

### Metronom 137

[App page](https://appshunter.io/ios/app/metronom-137/id6499492237)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases:** none


### HarmonicAlly

[App page](https://appshunter.io/ios/app/harmonically/id6765767065)

This app provides a comprehensive suite of tools for harmonica players, including chord and scale lookups, instrument key identification, and harmonica collection tracking. It also offers practical advice on playing and instrument care.

**Highlights:** Chord and scale lookup, Instrument key identification, Harmonica collection tracker, Customizable tuning options, Playing and care tips, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Metronom 137 free?

Metronom 137 is free to download, with no in-app purchases.

### Is HarmonicAlly free?

HarmonicAlly is free to download, with no in-app purchases.

### Do Metronom 137 or HarmonicAlly have ads?

Neither Metronom 137 nor HarmonicAlly shows ads.

### Which is updated more often, Metronom 137 or HarmonicAlly?

Metronom 137 ships an update every 10 days, and HarmonicAlly fortnightly. Most recently, Metronom 137 was updated on October 8, 2026 and HarmonicAlly on September 23, 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.*