# Midi Amuser vs Harmonicer

The clearest difference is price: Midi Amuser at Free against Harmonicer's $7.99. Harmonicer's advantage is update cadence (every 4 days vs every 5 weeks) and device support (4 vs 2). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Midi Amuser is free to download; Harmonicer costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Midi Amuser holds the better App Store score, 4.8 against 4.7. Both are backed by a comparable volume of ratings — 6 and 12 respectively.

Midi Amuser ships an update every 5 weeks, Harmonicer every 4 days. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | Midi Amuser | Harmonicer |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/midi-amuser/id1638630892/reviews)** | [4.7 (12 ratings)](https://appshunter.io/ios/app/harmonicer/id6468485333/reviews) |
| Number of ratings | 6 | **12** |
| Positive reviews | — | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 4 days** |
| Monetization | **Free** | Paid |
| Size | 4 MB | 23 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Tilmann Schuepfer](https://appshunter.io/developer/1629069676) | [Kai Aras](https://appshunter.io/developer/370820899) |

## What reviewers say

### Midi Amuser

[App page](https://appshunter.io/ios/app/midi-amuser/id1638630892)

This app allows you to connect, control, and record up to 10 MIDI instruments and controllers across 10 tracks. It manages routing, recalls instrument states, and enables live looping and complex song arrangements with a stable clock and zero latency.

**Highlights:** Connect up to 10 MIDI instruments, Connect up to 10 MIDI controllers, Zero latency, Step sequencer, Manage synth patches, Record and arrange MIDI events on 10 tracks, Arrange up to 16 song parts

**In-app purchases:** none


### Harmonicer

[App page](https://appshunter.io/ios/app/harmonicer/id6468485333)

This app generates musical inspiration by combining MIDI quantization, harmonization, and arpeggiation. It offers extensive scale support and allows for the creation of complex chords and rhythmic patterns to enhance musical compositions.

**Highlights:** MIDI Quantizer with 20+ scales, Custom scale support, Harmonizer with up to 4 voices, Arpeggiator with 10 modes, Process MIDI from any source, Standalone use with internal keyboard

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Midi Amuser free?

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

### Is Harmonicer free?

Harmonicer costs $7.99, with no in-app purchases.

### Which has better reviews, Midi Amuser or Harmonicer?

Midi Amuser is rated higher. Midi Amuser averages 4.8 out of 5 from 6 ratings, while Harmonicer averages 4.7 from 12 ratings.

### Do Midi Amuser or Harmonicer have ads?

Neither Midi Amuser nor Harmonicer shows ads.

### Which is updated more often, Midi Amuser or Harmonicer?

Midi Amuser ships an update every 5 weeks, and Harmonicer every 4 days. Most recently, Midi Amuser was updated on October 24, 2026 and Harmonicer on October 21, 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.*