# Smart Scale Controller Pro — Smart MIDI for Keyboards

> Real-time keyboard scale and tuning controller for musicians. (iPhone/iPad app by 9390-0801 Quebec inc.)

- Source: https://appshunter.io/ios/app/smart-scale-controller-pro/id1519381658 (this page in markdown: same URL + `.md`)
- Developer: [9390-0801 Quebec inc](https://appshunter.io/developer/1517759983)
- Category: Music, Utilities
- Price: $99.99 with in-app purchases
- Rating: 3.30/5 from 8 App Store ratings · 4 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 97 MB
- Languages: American English
- Released: 2020-06-22
- Data updated: 2026-08-15
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/smart-scale-controller-pro/id1519381658/reviews.md

## What is Smart Scale Controller Pro?

Smart Scale Controller is a professional-grade mobile application designed specifically to control the scale and tuning of your keyboard in real-time. Tailored for musicians, this app offers seamless control over various musical parameters, helping you unlock new creative possibilities.

Compatible Keyboards:
  - Korg (Pa Series, Triton Extreme/Classic/Studio, Trinity, Kronos, M3, Krome, Nautilus)
  - JuzziSound 1/2
  - Yamaha (PSR, MODX, Tyros, Genos)
  - Kontakt (Native instrument)


Supported Features:
- Real-time Scale Tuning
- Transpose
- Pitch Bend
- Preset Management
- Bank Select
- Connection Options:

OTG Cable for direct connection
BLE Yamaha for wireless Bluetooth connectivity
With Scale Controller, you can effortlessly adjust your keyboard settings on the go, making it the perfect tool for live performances or studio sessions. Explore new tunings, experiment with presets, and achieve perfect harmony with ease.

## Key features

- Real-time scale tuning
- Transpose
- Pitch bend
- Preset management
- Bank select
- OTG and BLE connectivity

## Pricing and in-app purchases

Base price: $99.99.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlimited Virtual MIDI Devices | $4.99 | one-time |
| Unlimited Preset Banks | $4.99 | one-time |
| Plugin Mode — AUv3 Instruments | $30.00 | one-time |


## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/smart-scale-controller-pro/id1519381658/reviews.md

### 1/5 — Dobren

*2026-07-01*

Ask for activation! Then try solving the problem with Mohamed who “no English “
It is crazy!

### 5/5 — Game changer

*2026-04-14*

The best and cheapest option on the market to control your keyboards on stage and Studio. Changing scales, transpose patches and styles from different arrangers and synthesizers from one app.

### 5/5 — Best app out there

*2026-01-04*

Best purchase I’ve ever made

### 1/5 — Fake doesn’t work

*2021-07-25*

I demand a refund this is a fake app

## Frequently asked questions about Smart Scale Controller Pro

### What keyboards are compatible with Smart Scale Controller Pro?

Smart Scale Controller Pro supports a range of keyboards including Korg (Pa Series, Triton, Trinity, Kronos, M3, Krome, Nautilus), JuzziSound 1/2, Yamaha (PSR, MODX, Tyros, Genos), and Kontakt (Native Instrument).

### How does Smart Scale Controller Pro connect to keyboards?

The app offers two connection options: OTG cable for direct connection and BLE Yamaha for wireless Bluetooth connectivity, providing flexibility for different setups.

### What musical parameters can I control with Smart Scale Controller Pro?

You can control real-time scale tuning, transpose, pitch bend, manage presets, and utilize bank select functions to enhance your musical creativity.

### Is Smart Scale Controller Pro available for free?

No, Smart Scale Controller Pro is a paid application. It is priced at $99.99.

### How often is Smart Scale Controller Pro updated?

The app was last updated on March 11, 2026, with version V22. This indicates a recent update, suggesting ongoing development and support.

### What is the age rating for Smart Scale Controller Pro?

Smart Scale Controller Pro has an age rating of 4+, making it suitable for a wide range of users.

### Does Smart Scale Controller Pro have ads?

No, Smart Scale Controller Pro does not contain advertisements, ensuring an uninterrupted user experience.

### What do users think of Smart Scale Controller Pro?

The app has a rating of 3.7 stars from 6 ratings. This suggests a generally positive but mixed reception from its user base.

## Version history (last 5 releases)

### V24 — 2026-06-09

• Improved MIDI communication stability
• Enhanced scale tuning performance
• Minor bug fixes and UI improvements

### V23 — 2026-05-28

• 20 built-in scales (Maqam, Western modes, Pentatonic, Blues)
• Quick-select preset banks for fast on-stage switching
• Virtual MIDI & USB MIDI support
• Works with Ketron and other pro keyboards

### V22 — 2026-03-11

MIDI Improvements • Fixed Yamaha keyboard sound selection accuracy • Enhanced USB MIDI connectivity on IOS • Added virtual MIDI device support • Better multi-port USB MIDI handling

UI Enhancements • Redesigned MIDI Debug screen with Send/Receive tabs • Adaptive app bar that scales with screen size • Toggle to show/hide center section in Quick Select • Improved mobile layout and responsiveness

Bug Fixes • Fixed layout overflow on small screens • Improved MIDI message reception • Better bank selection visual feedback

iPad Support • Added multitasking support (Split View & Slide Over) • All orientations now supported on iPad

Performance & Stability • Extended app validity to June 2026 • Better performance and stability improvements

Thank you for using Smart Scale Controller!

### V21 — 2025-12-13

Expanded keyboard compatibility with improved MIDI handling

Enhanced scale control engine for more accurate real-time tuning

Improved performance and stability during live play

Refined UI responsiveness for smoother interaction

Bug fixes and reliability improvements

### V20 — 2025-11-20

Fix Pitchbend issues

## Apps similar to Smart Scale Controller Pro

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Cavit Scale Ultimate](https://appshunter.io/ios/app/cavit-scale-ultimate/id1236917992) | 3.7 (3) | $149.99 | Music |
| [SWAM Viola](https://appshunter.io/ios/app/swam-viola/id1458130582) | 4.3 (6) | $19.99 | Music |
| [SWAM English Horn](https://appshunter.io/ios/app/swam-english-horn/id1458126274) | 5.0 (1) | $19.99 | Music |
| [SWAM Alto Trombone](https://appshunter.io/ios/app/swam-alto-trombone/id1470063131) | 5.0 (2) | $19.99 | Music |
| [SWAM Double Bass Section](https://appshunter.io/ios/app/swam-double-bass-section/id6449464956) | — | $29.99 | Music |
| [TercaScalaEngine](https://appshunter.io/ios/app/tercascalaengine/id6747754946) | — | Free | Music |

## More apps by 9390-0801 Quebec inc

- [KSacle Controller Pro](https://appshunter.io/ios/app/ksacle-controller-pro/id1517759984)
- [Korg Pa Scale Controller](https://appshunter.io/ios/app/korg-pa-scale-controller/id1519536075)
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- [Examen Théorique SAAQ](https://appshunter.io/ios/app/examen-theorique-saaq/id1527897401)
- [PitchBend Pro](https://appshunter.io/ios/app/pitchbend-pro/id1539228332)

All apps by 9390-0801 Quebec inc: https://appshunter.io/developer/1517759983

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*