# Mantis vs 501 Chorus Echo

The clearest difference is rating: Mantis at 5.0 against 501 Chorus Echo's 4.5. On price, ratings volume, update cadence and ads there is nothing between them.

Mantis costs $14.99 and 501 Chorus Echo $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mantis holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 8 and 8 respectively.

Mantis ships an update every 9 months, 501 Chorus Echo every 17 months. The most recent releases landed on October 1, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | Mantis | 501 Chorus Echo |
| --- | --- | --- |
| Price | $14.99 | $14.99 |
| Rating | **[5.0 (8 ratings)](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514/reviews)** | [4.5 (8 ratings)](https://appshunter.io/ios/app/501-chorus-echo/id6473418769/reviews) |
| Number of ratings | 8 | 8 |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 months** | Every 17 months |
| Monetization | Paid | Paid |
| Size | 10 MB | 23 MB |
| Requires iOS | **14.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [AudioThing Ltd.](https://appshunter.io/developer/1659941236) | [Nembrini Audio](https://appshunter.io/developer/1493296895) |

## What reviewers say

### Mantis

[App page](https://appshunter.io/ios/app/mantis-bbd-echo/id1673531514)

This audio plugin emulates a vintage 70s analog delay/echo unit, offering a warm, authentic sound. It features four echo taps, swell selectors, and a unique modulation section for chorus-like effects.

**Highlights:** Emulates rare 70s BBD delay/echo, Warm analog sound, Four echo taps, Four swell selectors, Rotafaze modulation section, Mimics tape echo wow/flutter, Chorus-delay effect

**Features:** Vision Pro support

**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 Mantis free?

Mantis costs $14.99, with no in-app purchases.

### Is 501 Chorus Echo free?

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

### Which has better reviews, Mantis or 501 Chorus Echo?

Mantis is rated higher. Mantis averages 5.0 out of 5 from 8 ratings, while 501 Chorus Echo averages 4.5 from 8 ratings.

### Do Mantis or 501 Chorus Echo have ads?

Neither Mantis nor 501 Chorus Echo shows ads.

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

Mantis ships an update every 9 months, and 501 Chorus Echo every 17 months. Most recently, Mantis was updated on October 1, 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.*