# Keyborg Pro vs Scale Numbers Piano

The clearest difference is rating: Keyborg Pro at 5.0 against Scale Numbers Piano's 4.2. Keyborg Pro also leads on in-app purchases (none vs 1) and iOS requirement (12.0 vs 17.0). Scale Numbers Piano's advantage is ratings volume (12 vs 1). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Scale Numbers Piano sells 1 one-off in-app purchase. Keyborg Pro asks for nothing beyond the download.

Keyborg Pro holds the better App Store score, 5.0 against 4.2. That said, the two scores are not equally well evidenced: Scale Numbers Piano has 12 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Keyborg Pro | Scale Numbers Piano |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keyborg-pro/id1059165657/reviews)** | [4.2 (12 ratings)](https://appshunter.io/ios/app/scale-numbers-piano/id1270369797/reviews) |
| Number of ratings | 1 | **12** |
| Positive reviews | — | 65.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | Fortnightly |
| Monetization | **Free** | Free with in-app purchases |
| Size | 775 MB | 340 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [GARY POGODA](https://appshunter.io/developer/531221055) | [Scale Degrees LTD](https://appshunter.io/developer/1255001566) |

## What reviewers say

### Keyborg Pro

[App page](https://appshunter.io/ios/app/keyborg-pro/id1059165657)

This app transforms any MIDI keyboard into a versatile instrument, offering modes for pedal steel guitar, 6-string guitar, and advanced chord playing. It caters to both beginners and experienced musicians with intuitive chord-based controls.

**Highlights:** Pedal steel guitar simulation, 6-string guitar simulation, Advanced chord playing, Multiple play modes, Intuitive chord-based controls, Built-in help and tips

**Features:** macOS Compatibility

**In-app purchases:** none


### Scale Numbers Piano

[App page](https://appshunter.io/ios/app/scale-numbers-piano/id1270369797)

Compose melodies and chords simultaneously on your device. Record and loop your creations for improvisation and songwriting. Learn music theory and play popular songs with a unique scale number system, no prior knowledge needed.

**Highlights:** Play melody and chords together, Record and live loop compositions, Theory lessons and songbook, Scale number system for easy learning, Built-in sampler instruments, MIDI input for DAWs

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version | $2.99 | one-time |


## Frequently asked questions

### Is Keyborg Pro free?

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

### Is Scale Numbers Piano free?

Scale Numbers Piano is free to download, with in-app purchases available.

### Which has better reviews, Keyborg Pro or Scale Numbers Piano?

Keyborg Pro is rated higher. Keyborg Pro averages 5.0 out of 5 from 1 ratings, while Scale Numbers Piano averages 4.2 from 12 ratings.

### Do Keyborg Pro or Scale Numbers Piano have ads?

Neither Keyborg Pro nor Scale Numbers Piano shows ads.

### Which is updated more often, Keyborg Pro or Scale Numbers Piano?

Keyborg Pro ships an update fortnightly, and Scale Numbers Piano fortnightly. Most recently, Keyborg Pro was updated on October 29, 2026 and Scale Numbers Piano 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.*