# XII AudioVisual — Auto Composition

> Experimental audio-visual app generating real-time 3D graphics and twelve-tone music. (iPhone/iPad app by 昊 刘.)

- Source: https://appshunter.io/ios/app/xii-audiovisual/id905741418 (this page in markdown: same URL + `.md`)
- Developer: [昊 刘](https://appshunter.io/developer/652348004)
- Category: Music
- Price: $9.99
- Rating: 5.00/5 from 1 App Store ratings · 5 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 167 MB
- Languages: American English
- Released: 2014-09-27
- Data updated: 2026-06-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/xii-audiovisual/id905741418/reviews.md

## What is XII AudioVisual?

XII, an Experimental AudioVision App, performances ,in real-time, 3D computer graphics --animations visualized by audio-- and music based on Twelve-tone technique,  running on both iPhones and iPads.

Note: The music in XII is not pleasing to the ears  !!!

XII would lean towards automatic composition and music generated automatically. XII, therefore, offers few interfaces for users. Although, XII still provides you with sequence setup UI by which you are able to set the sequence of Twelve-tone. 

One way to associate with your works is to send midi notes from the App to your hosts, such as DAWs, via  wifi midi supported in XII. 

This version performances with piano sound.

The system inside XII automatically calculates the fundamental elements of music,  including octave notes, duration, velocity, polyphony, tempo, structure and expression, all of which ,except the sequence, are always generated and never repeated. Please note that all of these features and functions are in the hidden layers.

There are two kinds of sequencer orders under the system, forward and reverse.

---Interactive:
Notes produced by your taps.
3D graphic rotated by your gestures.


---Features:
-lighting
-real-time calculation on both animation and music
-sequence setup.
-background audio.
-wifi-midi feature supported.

## Key features

- 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

## Recent user reviews (5 of 5)

All indexed reviews: https://appshunter.io/ios/app/xii-audiovisual/id905741418/reviews.md

### 1/5 — DONT PURCHASE! I WANT A REFUND

*2026-03-12*

This has to be a scam. Literally none of the function of this app work. Not one, if you want to touch the screen to make noise and spend $9.99 to do it this is the perfect app for you. Did I mention not one instruction, nor any ability to do anything in the setting. Apple should ban this app, it is literally robbing people. Sucks

### 1/5 — Refund please

*2021-06-01*

Refund please not what it says it is refund please

### 4/5 — Unique on iOS

*2019-11-22*

I love this app. Only negative comment is that the piano runs  very close to clipping. Would be great to have adjustable volume/velocity function by note.

### 5/5 — Pretty amazing

*2019-07-07*

On iphone xs! Wow 12 tone randomness with midi and interaction. Lil spendy but if the midi works well then i shall give my full blessing. This is a dissonant gem of beauty.

**Developer response:** Thanks for the feedback. Do not hesitate to mail me, If you have any questions with XII. liuhao.talk@gmail.com

### 1/5 — App crashes on launch! iOS 7? Seriously?

*2014-10-04*

I would expect more for a $20 application.

## Frequently asked questions about XII AudioVisual

### What is XII AudioVisual?

XII AudioVisual is an experimental app that generates 3D computer graphics and music in real-time using the twelve-tone technique. It focuses on automatic composition and offers limited user interaction.

### What kind of music does XII AudioVisual create?

The music generated by XII AudioVisual is based on the twelve-tone technique and is described as experimental, not intended to be conventionally pleasing. The app automatically calculates musical elements like octave notes, duration, and tempo.

### Can I use XII AudioVisual with other music software?

Yes, XII AudioVisual supports Wi-Fi MIDI, allowing you to send MIDI notes to Digital Audio Workstations (DAWs) or other compatible hosts on your network.

### What devices does XII AudioVisual support?

XII AudioVisual is available for iPhone, iPad, and iPod. It is designed to run on both iPhones and iPads.

### How much does XII AudioVisual cost?

XII AudioVisual is a paid application, priced at $9.99. It does not feature in-app purchases or advertisements.

### How often is XII AudioVisual updated?

The latest version of XII AudioVisual is 3.6, and it was last updated on January 2, 2025. This indicates a relatively active development cycle.

### What is the age rating for XII AudioVisual?

XII AudioVisual has an age rating of 4+, making it suitable for a wide range of users. The app's content is not considered mature.

### Does XII AudioVisual have ads?

No, XII AudioVisual does not contain advertisements. It is a paid application that offers an ad-free experience.

## Version history (last 5 releases)

### 3.6 — 2025-01-02

bugs fixed

### 3.5 — 2021-08-15

a new scene added

### 3.2 — 2019-03-24

--New iPhones and iPads are now well supported.
--graphic quality updated.

### 3.0 — 2016-02-10

Added a new scene.

### 2.0 — 2014-12-29

Supported iOS 8.
AudioVision.
Audio Effects.
Rotation.
Multi-touch.
Optimized for iPhone 6 and iPhone 6 Plus.

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## More apps by 昊 刘

- [LH Rubbing](https://appshunter.io/ios/app/lh-rubbing/id652348001)
- [LH Grain](https://appshunter.io/ios/app/lh-grain/id673676932)
- [LH XYZ](https://appshunter.io/ios/app/lh-xyz/id676800278)
- [LH Tuner](https://appshunter.io/ios/app/lh-tuner/id877746374)
- [Tuner And Metronome](https://appshunter.io/ios/app/tuner-and-metronome/id885575354)

All apps by 昊 刘: https://appshunter.io/developer/652348004

## Related topics

[xii audiovisual](https://appshunter.io/ios/topics/xii-audiovisual) · [per loenicker](https://appshunter.io/ios/topics/per-loenicker)

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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 2026-06-04.*