JAX Stereo Tool (AU) vs Stereo Width Control
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
JAX Stereo Tool (AU)
This audio processing tool allows users to visually manipulate the stereo image of digital audio. It functions as a mastering effect, enabling real-time adjustment of stereo width and the recovery of mono compatibility. The app includes a correlograph for visual feedback and optimization.
- Visual stereo image manipulation
- Real-time stereo width adjustment
- Mono compatibility recovery
- Integrated correlograph for visual feedback
- Audio Unit (AUv3) plugin format
- System-wide availability
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JAX Stereo Tool is a visual Audio Unit plugin for manipulating the stereo image of digital audio. The distribution app comes with an embedded plug-in (Audio Unit) that is available system-wide when you install the app. You should be able to use it with most supporting host applications. Audio Units are Apple's recommended method for providing shared audio effects for applications and audio editors. You can load the plugin into any host application that supports at least stereophonic audio effect plug-ins (in Audio Unit format - AUv3) with its own user interface. JAX Stereo Tool has its main use as a mastering effect, that allows you to modify the stereo image of your audio by narrowing or widening it in a controlled manner. That is, the stereo output can be continuously adjusted in the basic function of pure mono to very wide stereo. This happens in real time and you can observe the result with the integrated correlograph, controlling and optimizing the audio thanks to this helpful additional visual information. One of the special functions of JAX Stereo Toolis to recover lost mono-compatibility. This technique is conceptually quite simple and effective but somewhat difficult to understand. Please read the manual for further details. The manual is shipped with the app or available on the product website at https://audio.digitster.com
Stereo Width Control
This audio plugin allows precise control over the stereo width of audio across four adjustable frequency bands. It's designed for mastering engineers to manage bass frequencies while maintaining a wide stereo image in other ranges. Features include solo controls for each band and a visual vectorscope.
- Adjustable stereo width per frequency band
- Four independent frequency bands
- Solo control for each band
- Stereo vectorscope visualization
- Runs inside host apps like GarageBand
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Stereo Width Control is an Audio Unit plugin that allows you to increase or decrease the stereo width of 4 adjustable frequency bands. Mastering engineers use it to ensure that the bass frequencies of the kick drum and bass instruments stay tightly focused in the centre channel while a keeping spacious stereo image in the mid range frequencies. Stereo Width Control operates with your choice of 1 to 4 separate bands. Each band has a solo control, used to audition that band on its own while you adjust its frequency range and stereo width setting. In the lower right is a stereo vectorscope graph that is helpful for visualising the volume and stereo width of your tracks. NOTE: This app is an Audio Unit plugin that runs inside of host apps such as GarageBand. It does not process audio in standalone mode.
Screenshots
Verdict
The clearest difference is rating: Stereo Width Control at 5.0 against JAX Stereo Tool (AU)'s 4.4. Stereo Width Control also leads on review sentiment (100% vs 80%) and iOS requirement (10.3 vs 12.0). JAX Stereo Tool (AU)'s advantage is update cadence (every 11 days vs every 12 months). On price, ratings volume, 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
JAX Stereo Tool (AU) costs $5.99 and Stereo Width Control $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stereo Width Control holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 27 and 12 respectively. Written reviews point the same way: 80% of JAX Stereo Tool (AU)'s written reviews are positive against 100% of Stereo Width Control's.
JAX Stereo Tool (AU) ships an update every 11 days, Stereo Width Control every 12 months. Both last shipped on October 10, 2026.
| Parameter | JAX Stereo Tool (AU) | Stereo Width Control |
|---|---|---|
| Price | $5.99 | $5.99 |
| Rating | 4.4 (27 ratings) | 5.0 (12 ratings) — better |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 27 — better | 12 |
| Update frequency | Every 11 days — better | Every 12 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 10.3 — better |
| Further details — not scored | ||
| Size | 10 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Jens Guell | Blue Mangoo Consulting Company Limited |
Customer experience
JAX Stereo Tool (AU)
Stereo Width Control
In-app purchases
JAX Stereo Tool (AU)
No in-app purchases
Stereo Width Control
No in-app purchases
Questions
Is JAX Stereo Tool (AU) free?
Is Stereo Width Control free?
Which has better reviews, JAX Stereo Tool (AU) or Stereo Width Control?
Do JAX Stereo Tool (AU) or Stereo Width Control have ads?
Which is updated more often, JAX Stereo Tool (AU) or Stereo Width Control?
Other comparisons
