# Vetro vs Harmonaut

The clearest difference is review sentiment: Harmonaut at 100% against Vetro's 40%. Harmonaut also leads on rating (5.0 vs 4.0) and update cadence (every 9 days vs every 2 months). Vetro's advantage is in-app purchases (none vs 1). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Harmonaut sells 1 one-off in-app purchase. Vetro asks for nothing beyond the download.

Harmonaut holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 2 and 7 respectively. Written reviews point the same way: 40% of Vetro's written reviews are positive against 100% of Harmonaut's.

Vetro ships an update every 2 months, Harmonaut every 9 days. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Vetro | Harmonaut |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (2 ratings)](https://appshunter.io/ios/app/vetro-visual-metronome/id1637121079/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/harmonaut/id6784680994/reviews)** |
| Number of ratings | 2 | **7** |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 9 days** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 6 MB | 117 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Joan Duat](https://appshunter.io/developer/1866565344) | [District One Mobile, LLC](https://appshunter.io/developer/812513884) |

## What reviewers say

### Vetro

[App page](https://appshunter.io/ios/app/vetro-visual-metronome/id1637121079)

This app provides a visual metronome with dynamic beat synchronization via Ableton Link. It supports custom animations and works across multiple devices, enhancing practice and recording sessions.

**Highlights:** Visual metronome, Ableton Link synchronization, Custom GIF and Lottie animations, Multiple visualization modes, Cross-device support (iPhone, iPad, macOS), Adjustable time signatures

**In-app purchases:** none


### Harmonaut

[App page](https://appshunter.io/ios/app/harmonaut/id6784680994)

Create music by feel without needing music theory. This app generates rich chords and smooth progressions, allowing you to shape the mood with intuitive controls. Save and reorder your musical ideas effortlessly.

**Highlights:** Play by feel, no theory required, Shape mood with tension and brightness faders, Smooth voice leading for flowing progressions, Chords named for musicians, Save and reorder progressions, Works on iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Harmonaut Pro | $9.99 | one-time |


## Frequently asked questions

### Is Vetro free?

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

### Is Harmonaut free?

Harmonaut is free to download, with in-app purchases available.

### Which has better reviews, Vetro or Harmonaut?

Harmonaut is rated higher. Vetro averages 4.0 out of 5 from 2 ratings, while Harmonaut averages 5.0 from 7 ratings.

### Do Vetro or Harmonaut have ads?

Neither Vetro nor Harmonaut shows ads.

### Which is updated more often, Vetro or Harmonaut?

Vetro ships an update every 2 months, and Harmonaut every 9 days. Most recently, Vetro was updated on October 30, 2026 and Harmonaut on October 25, 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.*