User Scale vs XII AudioVisual
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Control tuning scale with iPad
- Change instrument key tunings
- Apply consistent tuning values
- Real-time performance control
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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
XII AudioVisual
This app generates 3D computer graphics and music in real-time based on the twelve-tone technique. It offers automatic composition with limited user interface, allowing MIDI note export to DAWs. The music is experimental and not intended for conventional listening.
- Real-time 3D computer graphics
- Audio-visual music generation
- Twelve-tone technique composition
- MIDI note export via Wi-Fi
- Sequence setup UI
- Interactive 3D rotation
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XII is an experimental audiovisual work by Liu Hao for iPhone and iPad. Based on twelve-tone composition, it generates music and real-time 3D visuals as a continuously evolving audiovisual performance. Users can define a twelve-tone sequence, while all other musical parameters are generated automatically in real time. Three visual scenes evolve alongside the music, with animation and lighting responding to sound. Users can produce notes by touching the screen, rotate the 3D environment through gestures, and transmit generated MIDI notes to compatible software via Wi-Fi MIDI. XII uses a piano timbre. Its music is not intended to be conventionally tonal or easy-listening. Dissonance and unpredictability are intentional aspects of the work. FEATURES - Twelve-tone sequence configuration - Forward and reverse sequence playback - Real-time automatic music generation - Three evolving 3D visual scenes - Audio-responsive animation and lighting - Interactive note generation through touch - Gesture-controlled 3D rotation - Wi-Fi MIDI output - Background audio support - Piano-based sound generation
Screenshots
Verdict
The clearest difference is review sentiment: User Scale at 100% against XII AudioVisual's 33%. User Scale also leads on price (Free vs $9.99) and rating (3.5 vs 3.0). XII AudioVisual's advantage is device support (3 vs 1). On ratings volume, update cadence, ads and in-app purchases 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
User Scale is free to download; XII AudioVisual costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
User Scale holds the better App Store score, 3.5 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively. Written reviews point the same way: 100% of User Scale's written reviews are positive against 33% of XII AudioVisual's.
User Scale ships an update every 13 months, XII AudioVisual every 22 months. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.
| Parameter | User Scale | XII AudioVisual |
|---|---|---|
| Price | Free — better | $9.99 |
| Rating | 3.5 (2 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | 100.0% of reviews — better | 33.3% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | Every 13 months — better | Every 22 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 8.1 — better | 15.6 |
| Further details — not scored | ||
| Size | 8 MB | 167 MB |
| Age rating | 4+ | 4+ |
| Developer | Roland Corporation | 昊 刘 |
Customer experience
User Scale
XII AudioVisual
In-app purchases
User Scale
No in-app purchases
XII AudioVisual
No in-app purchases
Questions
Is User Scale free?
Is XII AudioVisual free?
Which has better reviews, User Scale or XII AudioVisual?
Do User Scale or XII AudioVisual have ads?
Which is updated more often, User Scale or XII AudioVisual?
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