# Harmonicer vs Know the Notes

The clearest difference is update cadence: Harmonicer at every 4 days against Know the Notes's fortnightly. Harmonicer also leads on iOS requirement (11.0 vs 15.1). Know the Notes's advantage is price ($1.99 vs $4.99). On ads, in-app purchases and device support there is nothing between them.

Harmonicer costs $4.99 and Know the Notes $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Harmonicer ships an update every 4 days, Know the Notes fortnightly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Harmonicer | Know the Notes |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | **[4.7 (12 ratings)](https://appshunter.io/ios/app/harmonicer/id6468485333/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Fortnightly |
| Monetization | Paid | — |
| Size | 23 MB | 26 MB |
| Requires iOS | **11.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Kai Aras](https://appshunter.io/developer/370820899) | [DAVID MAYR LERNER](https://appshunter.io/developer/1877367513) |

## What reviewers say

### 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


### Know the Notes

[App page](https://appshunter.io/ios/app/know-the-notes/id6759197678)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Harmonicer free?

Harmonicer costs $4.99, with no in-app purchases.

### Is Know the Notes free?

Know the Notes costs $1.99, with no in-app purchases.

### Do Harmonicer or Know the Notes have ads?

Neither Harmonicer nor Know the Notes shows ads.

### Which is updated more often, Harmonicer or Know the Notes?

Harmonicer ships an update every 4 days, and Know the Notes fortnightly. Most recently, Harmonicer was updated on October 25, 2026 and Know the Notes 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.*