# Cab ML vs 501 Chorus Echo

The clearest difference is review sentiment: Cab ML at 50% against 501 Chorus Echo's 0%. Cab ML also leads on price (Free vs $14.99) and update cadence (every 3 weeks vs every 17 months). 501 Chorus Echo's advantage is rating (4.5 vs 4.0) and in-app purchases (none vs 1). On ratings volume, ads, device support and iOS requirement there is nothing between them.

Cab ML is free to download; 501 Chorus Echo costs $14.99 up front. Cab ML sells 1 one-off in-app purchase. 501 Chorus Echo asks for nothing beyond the download.

501 Chorus Echo holds the better App Store score, 4.5 against 4.0. Both are backed by a comparable volume of ratings — 4 and 8 respectively. Written reviews complicate that: 50% of Cab ML's written reviews are positive against 0% of 501 Chorus Echo's, so the app with the better star average is not the one people write more warmly about.

Cab ML ships an update every 3 weeks, 501 Chorus Echo every 17 months. The most recent releases landed on September 27, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Cab ML | 501 Chorus Echo |
| --- | --- | --- |
| Price | **Free** | $14.99 |
| Rating | [4.0 (4 ratings)](https://appshunter.io/ios/app/cab-ml/id6469339928/reviews) | **[4.5 (8 ratings)](https://appshunter.io/ios/app/501-chorus-echo/id6473418769/reviews)** |
| Number of ratings | 4 | **8** |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 17 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 63 MB | 23 MB |
| Requires iOS | **14.0** | 15 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jan Maes](https://appshunter.io/developer/1550506252) | [Nembrini Audio](https://appshunter.io/developer/1493296895) |

## What reviewers say

### Cab ML

[App page](https://appshunter.io/ios/app/cab-ml/id6469339928)

This app generates custom impulse responses using a neural network, allowing interactive sound shaping. It also includes a poweramp and microphone reverb generator for further audio manipulation.

**Highlights:** Neural network impulse response generation, Interactive tag-based sound shaping, Poweramp with multiple options, Microphone reverb generator, AUv3 plugin support

**Features:** Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cab ML Activation | $11.99 | one-time |


### 501 Chorus Echo

[App page](https://appshunter.io/ios/app/501-chorus-echo/id6473418769)

This audio plugin meticulously models the iconic Roland RE-501 Chorus Echo, offering authentic analog warmth with modern digital flexibility. It provides producers with classic tape delay, BBD chorus, and spring reverb sounds, enhanced by DAW tempo sync and expanded controls for any music genre.

**Highlights:** Authentic analog sound reproduction, Extended creative control with DAW sync, Intuitive user interface, Versatile for any music genre, Independent SOS timings, Linear preamp option

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Cab ML free?

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

### Is 501 Chorus Echo free?

501 Chorus Echo costs $14.99, with no in-app purchases.

### Which has better reviews, Cab ML or 501 Chorus Echo?

501 Chorus Echo is rated higher. Cab ML averages 4.0 out of 5 from 4 ratings, while 501 Chorus Echo averages 4.5 from 8 ratings.

### Do Cab ML or 501 Chorus Echo have ads?

Neither Cab ML nor 501 Chorus Echo shows ads.

### Which is updated more often, Cab ML or 501 Chorus Echo?

Cab ML ships an update every 3 weeks, and 501 Chorus Echo every 17 months. Most recently, Cab ML was updated on September 27, 2026 and 501 Chorus Echo on October 13, 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.*