Decim8 vs Quantum VJ HD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Decim8
Apply a variety of digital effects to your photos and live camera feeds. Save custom effect combinations and explore unique, ever-changing visual transformations.
- 33 digital effects
- Load from photo library
- Live camera input
- Save custom effects
- Unique effect variations
- Effect previews
Read full descriptionHide full description
APP RATED 9/10 BY WIRED MAGAZINE - 33 insane digital effects - Load images from your photo library or use a live camera - Save your favorite combinations as your own named effects - Effects never exactly the same twice - Effects previews give an idea of what each effect does.
Quantum VJ HD
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.
- Audio-reactive graphics
- Real-time camera stream mixing
- Multitouch parameter control
- Custom codeset image upload
- Microphone and Line-in audio input
Read full descriptionHide full description
Quantum VJ HD is a simple glitch-style audio visualizer. It can receive sound from the microphone or from the Line-in port (depends on the system settings). Sound will be converted to the graphic elements byte by byte. The final video can be mixed with the camera stream in real time. iTunes File Sharing and Wi-Fi can be used, if you want to upload your own codeset images to the app. [ Multitouch control ] (pair of parameters for each new touch) 1st Touch - changing the Mode (horizontally) and the Power (vertically) parameters. 2nd Touch - changing the Color (horizontally) and the Noise (vertically) parameters. 3rd Touch - changing the Camera (horizontally) and the Resolution (vertically) parameters. 4th Touch - changing the Brightness (horizontally) and the Speed (vertically) parameters. Press on the top left corner to hide/show the control panel (fullscreen mode ON/OFF).
Screenshots
Verdict
The clearest difference is review sentiment: Quantum VJ HD at 100% against Decim8's 52%. Quantum VJ HD also leads on rating (5.0 vs 3.8). Decim8's advantage is update cadence (weekly vs every 35 months) and ratings volume (149 vs 10). On ads, in-app purchases, 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
Decim8 costs $0.99 and Quantum VJ HD $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Quantum VJ HD holds the better App Store score, 5.0 against 3.8. That said, the two scores are not equally well evidenced: Decim8 has 149 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 52% of Decim8's written reviews are positive against 100% of Quantum VJ HD's.
Decim8 ships an update weekly, Quantum VJ HD every 35 months. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.
| Parameter | Decim8 | Quantum VJ HD |
|---|---|---|
| Price | $0.99 — better | $1.99 |
| Rating | 3.8 (149 ratings) | 5.0 (10 ratings) — better |
| Positive reviews | 51.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 149 — better | 10 |
| Update frequency | Weekly — better | Every 35 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 31 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Kris Collins | Alexander Zolotov |
Customer experience
Decim8
Quantum VJ HD
Bugs and requests
Decim8
Reported bugs
3 issues- Crashes on startup or when trying to save
- Compatibility issues with newer iOS versions
- Inability to access camera roll or photo library
Requested features
5 requests- Add undo/revert functionality
- Improve interface and usability
- Implement better image saving options
- Add support for higher resolution images
- Introduce video processing capabilities
Quantum VJ HD
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Decim8
No in-app purchases
Quantum VJ HD
No in-app purchases
