Comparison

SWAM Viola 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

SWAM Viola

This virtual instrument uses physical modeling to generate realistic string performances in real-time, responding dynamically to your playing style. It offers advanced spatial control with a built-in room simulator and can be used standalone or as an AUv3 plugin. Designed for expressive control, it's suitable for various musical styles and accessible to visually impaired users.

Highlights
  • Physical modeling sound generation
  • Real-time dynamic response
  • Built-in Room Simulator (Ambiente)
  • Standalone and AUv3 plugin support
  • Intuitive interface for all users
  • MPE and MIDI controller support
  • Customizable timbre, vibrato, and dynamics
Read full description

SWAM Viola for iOS: Unmatched Realism and Expressive Power in Your Hands Experience the cutting-edge Physical Modeling technology of SWAM Viola for iOS, now featuring the revolutionary Room Simulator "Ambiente"! Unlike sampled libraries, this virtual instrument doesn’t play pre-recorded sounds but generates authentic string performances in real-time, responding dynamically to your every nuance, just like a real violist. These instruments are NOT sample libraries. Unlike sampling, which uses recordings to replicate the sound of an instrument, physical modeling doesn’t generate a sound as such but creates the conditions for the system to create it according to an external input (like someone playing on a keyboard). This means every note is unique, and the instrument responds dynamically to your playing style. With SWAM Viola, you can unleash your creativity across any musical style—from classical to modern, film scoring to microtonal music. Whether you're performing live or producing music on the go, SWAM Viola is your ultimate companion. New Features and Key Benefits: Room Simulator "Ambiente": Take advantage of advanced spatial control with the built-in Room Simulator "Ambiente," which allows you to position the instrument in a realistic acoustic space, interact dynamically with other SWAM instruments in the same virtual room, and create truly immersive performances. Additionally, the legacy Reverb, EQ, and Compressor effects are available for fine-tuning your sound. Standalone and AUv3 Plugin: Perform in real time or integrate SWAM Viola seamlessly into your mobile production workflow. Intuitive, Inclusive Interface: Designed for everyone, including blind and visually impaired users. Expressive Control: Play with unmatched expressivity using the exclusive virtual bowing surface, MPE controllers, keyboards, breath controllers, or other MIDI devices. Top Features at a Glance: Access a library of presets, create your own, or import presets from the desktop version. Customize every detail of your sound, including timbre, vibrato, and dynamics. Micro-tune the instrument with the Pitch Manager, supporting devices like MAQAM for advanced tuning systems. Add built-in effects like EQ, and Compressor. Play with different viola bodies to explore unique tonal variations. Use AUv3 to integrate with your mobile DAW (Logic, Cubasis, AUM) or apps like Camelot PRO for live performances. Who is SWAM Viola for iOS Designed For? Wind Controller Players: Looking for a mobile setup to perform live without needing a computer while still achieving an incredible sound. Keyboard Players: Frustrated by the limited expressive capabilities of normal sample-based plugins? SWAM Viola unlocks the full range of expression. Music Producers: Need a mobile setup to produce music from anywhere without carrying around expensive gear? SWAM Viola is the solution. Musicians Seeking Expressivity: Looking for a virtual instrument that allows you to express the full range of your musicality easily on your iPhone or iPad. IMPORTANT: To fully harness the expressive power of SWAM Viola, a controller capable of continuous expression (such as a breath controller, expression pedal, MPE device, or wind controller) is required. Just like a bow is essential for a real violist, SWAM Viola needs expressive input for maximum realism. With SWAM Viola for iOS, you have the freedom to create lifelike string performances on your iPhone or iPad. Redefine your music with unparalleled realism and expressive depth—anytime, anywhere.

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

SWAM Viola4 screens
Smart Scale Controller Pro4 screens

Verdict

The call

The clearest difference is review sentiment: SWAM Viola at 100% against Smart Scale Controller Pro's 50%. SWAM Viola also leads on price ($29.99 vs $99.99) and rating (4.3 vs 3.4). Smart Scale Controller Pro's advantage is update cadence (every 3 weeks vs every 2 months). On ratings volume, ads, monetization model and device support 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

SWAM Viola costs $29.99 and Smart Scale Controller Pro $99.99 up front. Smart Scale Controller Pro sells 3 one-off in-app purchases. SWAM Viola asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

SWAM Viola holds the better App Store score, 4.3 against 3.4. Both are backed by a comparable volume of ratings — 6 and 9 respectively. Written reviews point the same way: 100% of SWAM Viola's written reviews are positive against 50% of Smart Scale Controller Pro's.

UpkeepUpdate frequency

SWAM Viola ships an update every 2 months, Smart Scale Controller Pro every 3 weeks. The most recent releases landed on September 19, 2026 and September 8, 2026 respectively.

Scorecard5 real differences · 5 level
SWAM Viola versus Smart Scale Controller Pro: the parameters behind the verdict, then further details
ParameterSWAM ViolaSmart Scale Controller Pro
Price$29.99 — better$99.99
Rating4.3 (6 ratings) — better3.4 (9 ratings)
Positive reviews100.0% of reviews — better50.0% of reviews
Number of ratings69 — better
Update frequencyEvery 2 monthsEvery 3 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.0 — better15.6
Further details — not scored
Size103 MB97 MB
Age rating4+4+
DeveloperAudio Modeling9390-0801 Quebec inc

Customer experience

SWAM Viola

All ratings6 ratings
Positive83.3%
Neutral0.0%
Negative16.7%
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

SWAM Viola

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 SWAM Viola free?
SWAM Viola costs $29.99, 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, SWAM Viola or Smart Scale Controller Pro?
SWAM Viola is rated higher. SWAM Viola averages 4.3 out of 5 from 6 ratings, while Smart Scale Controller Pro averages 3.4 from 9 ratings.
Do SWAM Viola or Smart Scale Controller Pro have ads?
Neither SWAM Viola nor Smart Scale Controller Pro shows ads.
Which is updated more often, SWAM Viola or Smart Scale Controller Pro?
SWAM Viola ships an update every 2 months, and Smart Scale Controller Pro every 3 weeks. Most recently, SWAM Viola was updated on September 19, 2026 and Smart Scale Controller Pro on September 8, 2026.

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