# Attack Softener vs 501 Chorus Echo

The clearest difference is review sentiment: Attack Softener at 50% against 501 Chorus Echo's 0%. Attack Softener also leads on update cadence (every 3 weeks vs every 17 months) and price ($5.99 vs $8.99). 501 Chorus Echo's advantage is rating (4.5 vs 4.3). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Attack Softener costs $5.99 and 501 Chorus Echo $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.

501 Chorus Echo holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 10 and 8 respectively. Written reviews complicate that: 50% of Attack Softener'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.

Attack Softener ships an update every 3 weeks, 501 Chorus Echo every 17 months. The most recent releases landed on September 30, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Attack Softener | 501 Chorus Echo |
| --- | --- | --- |
| Price | **$5.99** | $8.99 |
| Rating | [4.3 (10 ratings)](https://appshunter.io/ios/app/attack-softener/id1504605178/reviews) | **[4.5 (8 ratings)](https://appshunter.io/ios/app/501-chorus-echo/id6473418769/reviews)** |
| Number of ratings | **10** | 8 |
| Positive reviews | **50.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 13 MB | 23 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Blue Mangoo Consulting Company Limited](https://appshunter.io/developer/1475107602) | [Nembrini Audio](https://appshunter.io/developer/1493296895) |

## What reviewers say

### Attack Softener

[App page](https://appshunter.io/ios/app/attack-softener/id1504605178)

This audio effect plugin removes the initial attack transient of notes, allowing for synth-like sounds from various instruments. It functions like a transient shaper but can silence pick sounds for fast music, enabling clean solo tones without distortion.

**Highlights:** Removes note attack transients, Creates synth-like instrument sounds, Functions like a transient shaper, Silences pick sounds for fast music, Enables clean solo tones without distortion, Preserves original instrument tone

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 Attack Softener free?

Attack Softener costs $5.99, with no in-app purchases.

### Is 501 Chorus Echo free?

501 Chorus Echo costs $8.99, with no in-app purchases.

### Which has better reviews, Attack Softener or 501 Chorus Echo?

501 Chorus Echo is rated higher. Attack Softener averages 4.3 out of 5 from 10 ratings, while 501 Chorus Echo averages 4.5 from 8 ratings.

### Do Attack Softener or 501 Chorus Echo have ads?

Neither Attack Softener nor 501 Chorus Echo shows ads.

### Which is updated more often, Attack Softener or 501 Chorus Echo?

Attack Softener ships an update every 3 weeks, and 501 Chorus Echo every 17 months. Most recently, Attack Softener was updated on September 30, 2026 and 501 Chorus Echo on October 1, 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.*