# User Scale vs Solo Scale Controller

The clearest difference is review sentiment: User Scale at 100% against Solo Scale Controller's 0%. User Scale also leads on price (Free vs $44.99) and iOS requirement (8.1 vs 14.0). Solo Scale Controller's advantage is update cadence (every 9 days vs every 13 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.

User Scale is free to download; Solo Scale Controller costs $44.99 up front. Neither carries in-app purchases, so what you see is what you pay.

User Scale ships an update every 13 months, Solo Scale Controller every 9 days. The most recent releases landed on September 30, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | User Scale | Solo Scale Controller |
| --- | --- | --- |
| Price | **Free** | $44.99 |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/user-scale/id579231060/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 9 days** |
| Monetization | **Free** | Paid |
| Size | 8 MB | 56 MB |
| Requires iOS | **8.1** | 14.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Roland Corporation](https://appshunter.io/developer/387333694) | [9390-0801 Quebec inc](https://appshunter.io/developer/1517759983) |

## What reviewers say

### User Scale

[App page](https://appshunter.io/ios/app/user-scale/id579231060)

This iPad application allows musicians to control the tuning scale of their Roland instruments. It enables real-time adjustments to key tunings, applying consistent values across notes of the same name during performances.

**Highlights:** Control tuning scale with iPad, Change instrument key tunings, Apply consistent tuning values, Real-time performance control

**In-app purchases:** none


### Solo Scale Controller

[App page](https://appshunter.io/ios/app/solo-scale-controller/id1595253730)

This professional-grade app provides real-time control over keyboard scale and tuning for musicians. It offers seamless adjustments to musical parameters, enabling new creative possibilities for live performances and studio sessions.

**Highlights:** Real-time scale tuning, Transpose functionality, Pitch bend control, Preset management, Bank select, OTG and BLE connectivity

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is User Scale free?

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

### Is Solo Scale Controller free?

Solo Scale Controller costs $44.99, with no in-app purchases.

### Do User Scale or Solo Scale Controller have ads?

Neither User Scale nor Solo Scale Controller shows ads.

### Which is updated more often, User Scale or Solo Scale Controller?

User Scale ships an update every 13 months, and Solo Scale Controller every 9 days. Most recently, User Scale was updated on September 30, 2026 and Solo Scale Controller on October 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.*