# JAX Convolutor PRO (AU) vs SL Echo

The clearest difference is update cadence: SL Echo at weekly against JAX Convolutor PRO (AU)'s every 25 months. SL Echo also leads on rating (5.0 vs 4.6) and price ($6.99 vs $9.99). JAX Convolutor PRO (AU)'s advantage is ratings volume (5 vs 1) and iOS requirement (12.0 vs 15.0). On ads, in-app purchases, monetization model and device support there is nothing between them.

JAX Convolutor PRO (AU) costs $9.99 and SL Echo $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

SL Echo holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: JAX Convolutor PRO (AU) has 5 ratings behind it against 1, so its average is the more settled of the two.

JAX Convolutor PRO (AU) ships an update every 25 months, SL Echo weekly. The most recent releases landed on October 29, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | JAX Convolutor PRO (AU) | SL Echo |
| --- | --- | --- |
| Price | $9.99 | **$6.99** |
| Rating | [4.6 (5 ratings)](https://appshunter.io/ios/app/jax-convolutor-pro-au/id1494157807/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sl-echo/id6797348934/reviews)** |
| Number of ratings | **5** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 139 MB | 18 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jens Guell](https://appshunter.io/developer/1195004865) | [VIACHESLAV ZHILTSOV](https://appshunter.io/developer/1862005860) |

## What reviewers say

### JAX Convolutor PRO (AU)

[App page](https://appshunter.io/ios/app/jax-convolutor-pro-au/id1494157807)

This app uses complex signal processing to create realistic reverberation effects by analyzing real-world environments. It allows users to apply these effects to audio material, making it sound as if it were played in a specific location. Advanced adjustments can refine the results for professional audio production.

**Highlights:** Realistic reverberation effects, Impulse response analysis, Audio material manipulation, FFT algorithm processing, Customizable adjustments

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

**In-app purchases:** none


### SL Echo

[App page](https://appshunter.io/ios/app/sl-echo/id6797348934)

This audio effect app provides animated delay and space for musical decisions on iPad. Easily adjust time, feedback, and tone for various repeat styles, while maintaining a clear dry signal with stereo width and ducking. It supports AUv3 integration with popular music hosts.

**Highlights:** Animated delay and space effects, Adjustable time and feedback, Tone shaping controls, Stereo width and ducking, AUv3 support, Standalone preview mode, Factory and user presets

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

**In-app purchases:** none


## Frequently asked questions

### Is JAX Convolutor PRO (AU) free?

JAX Convolutor PRO (AU) costs $9.99, with no in-app purchases.

### Is SL Echo free?

SL Echo costs $6.99, with no in-app purchases.

### Which has better reviews, JAX Convolutor PRO (AU) or SL Echo?

SL Echo is rated higher. JAX Convolutor PRO (AU) averages 4.6 out of 5 from 5 ratings, while SL Echo averages 5.0 from 1 ratings.

### Do JAX Convolutor PRO (AU) or SL Echo have ads?

Neither JAX Convolutor PRO (AU) nor SL Echo shows ads.

### Which is updated more often, JAX Convolutor PRO (AU) or SL Echo?

JAX Convolutor PRO (AU) ships an update every 25 months, and SL Echo weekly. Most recently, JAX Convolutor PRO (AU) was updated on October 29, 2026 and SL Echo on October 16, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*