# Quantum VJ HD vs DU

The clearest difference is price: DU at Free against Quantum VJ HD's $1.99. DU also leads on update cadence (every 4 months vs every 35 months) and ratings volume (33 vs 10). Quantum VJ HD's advantage is in-app purchases (none vs 1) and rating (5.0 vs 4.5). On ads and device support there is nothing between them.

DU is free to download; Quantum VJ HD costs $1.99 up front. DU sells 1 one-off in-app purchase. Quantum VJ HD asks for nothing beyond the download.

Quantum VJ HD holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 10 and 33 respectively. Written reviews point the same way: 100% of Quantum VJ HD's written reviews are positive against 71% of DU's.

Quantum VJ HD ships an update every 35 months, DU every 4 months. The most recent releases landed on October 26, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | Quantum VJ HD | DU |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[5.0 (10 ratings)](https://appshunter.io/ios/app/quantum-vj-hd/id1188572371/reviews)** | [4.5 (33 ratings)](https://appshunter.io/ios/app/du-vfx/id1563142095/reviews) |
| Number of ratings | 10 | **33** |
| Positive reviews | **100.0% of reviews** | 70.6% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 4 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Best chart rank | **#195** | — |
| Size | 2 MB | 17 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Alexander Zolotov](https://appshunter.io/developer/324462547) | [Kris Collins](https://appshunter.io/developer/288419971) |

## What reviewers say

### Quantum VJ HD

[App page](https://appshunter.io/ios/app/quantum-vj-hd/id1188572371)

**Currently charting:** #195 Top Paid · Photo & Video (US App Store)

This app creates dynamic visual effects synchronized with audio input from your microphone or line-in. It allows real-time mixing with your camera feed and supports custom image uploads. Control various visual parameters with intuitive multitouch gestures.

**Highlights:** Audio-reactive graphics, Real-time camera stream mixing, Multitouch parameter control, Custom codeset image upload, Microphone and Line-in audio input

**Features:** macOS Compatibility

**In-app purchases:** none


### DU

[App page](https://appshunter.io/ios/app/du-vfx/id1563142095)

Transform videos into extreme digital art with 37 unique filters. This experimental app allows you to digitally mangle and twist footage, creating unique visual effects. Save any frame as a still image or export the entire glitched-out video.

**Highlights:** 37 exclusive video filters, Apply filters in infinite combinations, Arrange video effects stack manually, Blend glitched video with original, Randomize filters for unique chaos, Save affected video frames as stills

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Still Image Export | $0.99 | one-time |


## Frequently asked questions

### Is Quantum VJ HD free?

Quantum VJ HD costs $1.99, with no in-app purchases.

### Is DU free?

DU is free to download, with in-app purchases available.

### Which has better reviews, Quantum VJ HD or DU?

Quantum VJ HD is rated higher. Quantum VJ HD averages 5.0 out of 5 from 10 ratings, while DU averages 4.5 from 33 ratings.

### Do Quantum VJ HD or DU have ads?

Neither Quantum VJ HD nor DU shows ads.

### Which is updated more often, Quantum VJ HD or DU?

Quantum VJ HD ships an update every 35 months, and DU every 4 months. Most recently, Quantum VJ HD was updated on October 26, 2026 and DU on October 22, 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.*