# Scale Numbers Piano vs Bluetooth MIDI Controller Pro

The clearest difference is in-app purchases: Bluetooth MIDI Controller Pro at none against Scale Numbers Piano's 1. Bluetooth MIDI Controller Pro also leads on rating (4.4 vs 4.2). Scale Numbers Piano's advantage is update cadence (fortnightly vs every 32 months). On price, review sentiment, ratings volume and ads there is nothing between them.

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

Bluetooth MIDI Controller Pro holds the better App Store score, 4.4 against 4.2. Both are backed by a comparable volume of ratings — 12 and 10 respectively. Written reviews point the same way: 65% of Scale Numbers Piano's written reviews are positive against 67% of Bluetooth MIDI Controller Pro's.

Scale Numbers Piano ships an update fortnightly, Bluetooth MIDI Controller Pro every 32 months. The most recent releases landed on August 9, 2026 and June 3, 2026 respectively.

## The numbers

| Metric | Scale Numbers Piano | Bluetooth MIDI Controller Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.2 (12 ratings)](https://appshunter.io/ios/app/scale-numbers-piano/id1270369797/reviews) | **[4.4 (10 ratings)](https://appshunter.io/ios/app/bluetooth-midi-controller-pro/id6449652509/reviews)** |
| Number of ratings | **12** | 10 |
| Positive reviews | 65.0% of reviews | **66.7% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 32 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 340 MB | 3 MB |
| Requires iOS | **17.0** | 18.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Scale Degrees LTD](https://appshunter.io/developer/1255001566) | [pablo lopez](https://appshunter.io/developer/1502022592) |

## What reviewers say

### 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

**In-app purchases (1)**

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


### Bluetooth MIDI Controller Pro

[App page](https://appshunter.io/ios/app/bluetooth-midi-controller-pro/id6449652509)

This app allows you to connect and control various Bluetooth MIDI devices, including soft instruments, DAWs, and hardware music devices. It offers a full-range MIDI keyboard, pads matrix, and adjustable knobs and faders for comprehensive music production.

**Highlights:** MIDI Keyboard, MIDI Pads Matrix, MIDI Knobs, MIDI Faders, Multiple Control Views, State Persistence

**In-app purchases:** none


## Frequently asked questions

### Is Scale Numbers Piano free?

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

### Is Bluetooth MIDI Controller Pro free?

Bluetooth MIDI Controller Pro is free to download, with no in-app purchases.

### Which has better reviews, Scale Numbers Piano or Bluetooth MIDI Controller Pro?

Bluetooth MIDI Controller Pro is rated higher. Scale Numbers Piano averages 4.2 out of 5 from 12 ratings, while Bluetooth MIDI Controller Pro averages 4.4 from 10 ratings.

### Do Scale Numbers Piano or Bluetooth MIDI Controller Pro have ads?

Neither Scale Numbers Piano nor Bluetooth MIDI Controller Pro shows ads.

### Which is updated more often, Scale Numbers Piano or Bluetooth MIDI Controller Pro?

Scale Numbers Piano ships an update fortnightly, and Bluetooth MIDI Controller Pro every 32 months. Most recently, Scale Numbers Piano was updated on August 9, 2026 and Bluetooth MIDI Controller Pro on June 3, 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.*