# Harmonaut vs PNEUMATIC

The clearest difference is in-app purchases: PNEUMATIC at none against Harmonaut's 1. PNEUMATIC also leads on iOS requirement (15.6 vs 17.0). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for Harmonaut against 5.0 for PNEUMATIC. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

## The numbers

| Metric | Harmonaut | PNEUMATIC |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (7 ratings)](https://appshunter.io/ios/app/harmonaut-chord-player/id6784680994/reviews) | [5.0 (4 ratings)](https://appshunter.io/ios/app/pneumatic/id6816378252/reviews) |
| Number of ratings | **7** | 4 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 days | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 117 MB | 16 MB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [District One Mobile, LLC](https://appshunter.io/developer/812513884) | [Anthony Moran](https://appshunter.io/developer/6786293116) |

## What reviewers say

### Harmonaut

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

Create rich musical chord progressions by feel, without music theory. Shape the mood with intuitive faders and export your creations as MIDI for use in any Digital Audio Workstation. Perfect for songwriters and producers looking for a new way to explore musical ideas.

**Highlights:** Play chords by feel, no theory required, Shape chord mood with tension and brightness faders, Build and reorder full chord progressions, Voice-led chords for smooth transitions, Export progressions as MIDI files, Export to iReal Pro format

**Features:** macOS Compatibility

**In-app purchases (1)**

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


### PNEUMATIC

[App page](https://appshunter.io/ios/app/pneumatic/id6816378252)

This app simulates a unique valve pressure synthesizer, allowing users to control pressure, tune resonance, and add buzzing whistles. It can be played directly on screen or with a MIDI keyboard, offering a distinctive soundscape.

**Highlights:** Pressure control, Resonant tuning, Buzzing whistle effect, MIDI keyboard support, Save and load presets, AUv3 instrument

**In-app purchases:** none


## Frequently asked questions

### Is Harmonaut free?

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

### Is PNEUMATIC free?

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

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

Harmonaut and PNEUMATIC are both rated 5.0 out of 5 on the App Store, from 7 and 4 ratings respectively.

### Do Harmonaut or PNEUMATIC have ads?

Neither Harmonaut nor PNEUMATIC shows ads.

---

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