# MIDI MACHINE vs Contour

The clearest difference is update cadence: Contour at every 3 days against MIDI MACHINE's weekly. Contour also leads on iOS requirement (16.0 vs 18.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. MIDI MACHINE sells 1 one-off in-app purchase and Contour sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

MIDI MACHINE ships an update weekly, Contour every 3 days. The most recent releases landed on September 19, 2026 and September 14, 2026 respectively.

## The numbers

| Metric | MIDI MACHINE | Contour |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.0 (2 ratings)](https://appshunter.io/ios/app/contour-ambient-morph-synth/id6798038727/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Weekly | **Every 3 days** |
| Monetization | — | Freemium |
| Size | 52 MB | 108 MB |
| Requires iOS | 18.6 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Niklas Koellner](https://appshunter.io/developer/1885054421) | [Chih Han Lin](https://appshunter.io/developer/1800248325) |

## What reviewers say

### MIDI MACHINE

[App page](https://appshunter.io/ios/app/midi-machine/id6760569464)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MIDI MACHINE Pro | $4.99 | one-time |


### Contour

[App page](https://appshunter.io/ios/app/contour-ambient-morph-synth/id6798038727)

This app is a unique musical instrument played by touch. It uses a visual interface where your finger's position determines the sound, offering a novel way to create drones, textures, and pads. It also functions as an AUv3 plugin for use in other music production apps.

**Highlights:** Touch-based sound generation, Perceptual distance mapping, Eleven distinct sound sheets, MIDI input and ribbon controller, AUv3 plugin support, Recording functionality (Pro), Customizable sound sheets (Pro)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Contour Pro | $6.99 | one-time |


## Frequently asked questions

### Is MIDI MACHINE free?

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

### Is Contour free?

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

### Do MIDI MACHINE or Contour have ads?

Neither MIDI MACHINE nor Contour shows ads.

### Which is updated more often, MIDI MACHINE or Contour?

MIDI MACHINE ships an update weekly, and Contour every 3 days. Most recently, MIDI MACHINE was updated on September 19, 2026 and Contour on September 14, 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.*