# 24 vs Scouter Synth

The clearest difference is update cadence: 24 at daily against Scouter Synth's every 4 weeks. 24 also leads on ratings volume (5 vs 1). Scouter Synth's advantage is rating (5.0 vs 4.6). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scouter Synth holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: 24 has 5 ratings behind it against 1, so its average is the more settled of the two.

24 ships an update daily, Scouter Synth every 4 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | 24 | Scouter Synth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/24-tet-keys-microtonal-midi/id6789963675/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scouter-synth/id6811156018/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Every 4 weeks |
| Monetization | Free | Free |
| Size | 14 MB | 7 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Oransky](https://appshunter.io/developer/1639941241) | [Andrew Scott](https://appshunter.io/developer/972402841) |

## What reviewers say

### 24

[App page](https://appshunter.io/ios/app/24-tet-keys-microtonal-midi/id6789963675)

Explore microtonal music with a virtual keyboard that plays notes between standard semitones. Hear quarter tones instantly, send them as MIDI to your DAW, and discover unique keyboard layouts that morph into each other.

**Highlights:** Microtonal keyboard for quarter tones, MIDI output to DAWs, Morphing keyboard layouts, Polyphonic and mono MIDI modes, Visual representation of 24-TET, On-device sound playback

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

**In-app purchases:** none


### Scouter Synth

[App page](https://appshunter.io/ios/app/scouter-synth/id6811156018)

Create music with a retro handheld console interface. Compose melodies, add synth sounds or samples, and mix tracks with effects. Perform live with a touch-sensitive pad and punch-in effects.

**Highlights:** Eight-track music composition, Multiple synth voices and sample playback, On-board effects and mixing console, Performance pad for live parameter control, MIDI and Bluetooth controller support, Import and record audio samples

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

**In-app purchases:** none


## Frequently asked questions

### Is 24 free?

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

### Is Scouter Synth free?

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

### Which has better reviews, 24 or Scouter Synth?

Scouter Synth is rated higher. 24 averages 4.6 out of 5 from 5 ratings, while Scouter Synth averages 5.0 from 1 ratings.

### Do 24 or Scouter Synth have ads?

Neither 24 nor Scouter Synth shows ads.

### Which is updated more often, 24 or Scouter Synth?

24 ships an update daily, and Scouter Synth every 4 weeks. Most recently, 24 was updated on October 24, 2026 and Scouter Synth on October 24, 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.*