Comparison

User Scale vs Smart Scale Controller Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

User Scale

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
Read full description

This software application for iPad lets you change the tuning scale of your Roland musical instrument. When using User Scale you can: • Play your Roland musical instrument while controlling the tuning scale of your performance with your iPad • Change the tuning of your musical instrument’s keys. Apply the same values to all notes of the same name App requires: - Apple iPad Camera Connection Kit (camera connectors made by Apple Inc.) and USB cable (type A–male to type B–male, commercially available) -or- - Roland musical instrument that supports the wireless LAN function

About

Smart Scale Controller Pro

Control keyboard scale and tuning in real-time. Offers seamless control over musical parameters for musicians, unlocking new creative possibilities. Perfect for live performances or studio sessions.

Highlights
  • Real-time scale tuning
  • Transpose
  • Pitch bend
  • Preset management
  • Bank select
  • OTG and BLE connectivity
Features
Read full description

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.

Screenshots

Smart Scale Controller Pro4 screens

Verdict

The call

User Scale and Smart Scale Controller Pro both sit at 3.5 stars, but that hides the real split: 100% of User Scale's written reviews are positive against 50% of Smart Scale Controller Pro's. User Scale also leads on price (Free vs $99.99) and in-app purchases (none vs 3). Smart Scale Controller Pro's advantage is update cadence (every 3 weeks vs every 13 months) and ratings volume (9 vs 2). On rating and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

User Scale is free to download; Smart Scale Controller Pro costs $99.99 up front. Smart Scale Controller Pro sells 3 one-off in-app purchases. User Scale asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 3.5 for User Scale against 3.4 for Smart Scale Controller Pro. Both are backed by a comparable volume of ratings — 2 and 9 respectively. Written reviews are what separate them: 100% of User Scale's written reviews are positive against 50% of Smart Scale Controller Pro's.

UpkeepUpdate frequency

User Scale ships an update every 13 months, Smart Scale Controller Pro every 3 weeks. The most recent releases landed on June 5, 2026 and September 8, 2026 respectively.

Scorecard8 real differences · 2 level
User Scale versus Smart Scale Controller Pro: the parameters behind the verdict, then further details
ParameterUser ScaleSmart Scale Controller Pro
PriceFree — better$99.99
Rating3.5 (2 ratings) — better3.4 (9 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings29 — better
Update frequencyEvery 13 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterPaid
DevicesiPadiPhone, iPad, iPod — better
Requires iOS8.1 — better15.6
Further details — not scored
Size8 MB97 MB
Age rating4+4+
DeveloperRoland Corporation9390-0801 Quebec inc

Customer experience

User Scale

All ratings2 ratings
Positive50.0%
Neutral0.0%
Negative50.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Smart Scale Controller Pro

All ratings9 ratings
Positive55.6%
Neutral11.1%
Negative33.3%
Written reviews4 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

User Scale

No in-app purchases

3 purchases

Smart Scale Controller Pro

One-time3
  • Unlimited Virtual MIDI Devices$4.99
  • Unlimited Preset Banks$4.99
  • Plugin Mode — AUv3 Instruments$30.00

Questions

Is User Scale free?
User Scale is free to download, with no in-app purchases.
Is Smart Scale Controller Pro free?
Smart Scale Controller Pro costs $99.99, and also offers in-app purchases.
Which has better reviews, User Scale or Smart Scale Controller Pro?
User Scale is rated higher. User Scale averages 3.5 out of 5 from 2 ratings, while Smart Scale Controller Pro averages 3.4 from 9 ratings.
Do User Scale or Smart Scale Controller Pro have ads?
Neither User Scale nor Smart Scale Controller Pro shows ads.
Which is updated more often, User Scale or Smart Scale Controller Pro?
User Scale ships an update every 13 months, and Smart Scale Controller Pro every 3 weeks. Most recently, User Scale was updated on June 5, 2026 and Smart Scale Controller Pro on September 8, 2026.

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