# XII AudioVisual vs FeedbackGuard

The clearest difference is review sentiment: FeedbackGuard at 100% against XII AudioVisual's 33%. FeedbackGuard also leads on rating (5.0 vs 3.0) and update cadence (every 4 days vs every 22 months). XII AudioVisual's advantage is iOS requirement (15.6 vs 17.0). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

XII AudioVisual costs $9.99 and FeedbackGuard $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

FeedbackGuard holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews point the same way: 33% of XII AudioVisual's written reviews are positive against 100% of FeedbackGuard's.

XII AudioVisual ships an update every 22 months, FeedbackGuard every 4 days. The most recent releases landed on October 24, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | XII AudioVisual | FeedbackGuard |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | [3.0 (2 ratings)](https://appshunter.io/ios/app/xii-audiovisual/id905741418/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/feedbackguard/id6769670528/reviews)** |
| Number of ratings | **2** | 1 |
| Positive reviews | 33.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Every 4 days** |
| Monetization | Paid | Paid |
| Size | 167 MB | 4 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [昊 刘](https://appshunter.io/developer/652348004) | [Norwin Palme](https://appshunter.io/developer/1889770642) |

## What reviewers say

### XII AudioVisual

[App page](https://appshunter.io/ios/app/xii-audiovisual/id905741418)

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.

**Highlights:** 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

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### FeedbackGuard

[App page](https://appshunter.io/ios/app/feedbackguard/id6769670528)

This audio effect plugin automatically detects and suppresses acoustic feedback in real-time. It uses advanced analysis to place precise notch filters, allowing for clear audio during live performances or recordings. Customize settings for optimal suppression without compromising sound quality.

**Highlights:** Real-time howling detection, Adaptive notch bank (up to 24 notches), Live spectrum display, User-defined presets, Adjustable sensitivity and suppression, Optional harmonic tracking, Optional spectral noise reduction

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is XII AudioVisual free?

XII AudioVisual costs $9.99, with no in-app purchases.

### Is FeedbackGuard free?

FeedbackGuard costs $3.99, with no in-app purchases.

### Which has better reviews, XII AudioVisual or FeedbackGuard?

FeedbackGuard is rated higher. XII AudioVisual averages 3.0 out of 5 from 2 ratings, while FeedbackGuard averages 5.0 from 1 ratings.

### Do XII AudioVisual or FeedbackGuard have ads?

Neither XII AudioVisual nor FeedbackGuard shows ads.

### Which is updated more often, XII AudioVisual or FeedbackGuard?

XII AudioVisual ships an update every 22 months, and FeedbackGuard every 4 days. Most recently, XII AudioVisual was updated on October 24, 2026 and FeedbackGuard on October 18, 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.*