# 501 Chorus Echo vs VAPolyMkII

501 Chorus Echo and VAPolyMkII both sit at 4.5 stars, but that hides the real split: 67% of VAPolyMkII's written reviews are positive against 0% of 501 Chorus Echo's. VAPolyMkII also leads on price ($3.99 vs $14.99) and update cadence (weekly vs every 17 months). On rating, ratings volume, ads and in-app purchases there is nothing between them.

501 Chorus Echo costs $14.99 and VAPolyMkII $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.5 for 501 Chorus Echo against 4.5 for VAPolyMkII. Both are backed by a comparable volume of ratings — 8 and 11 respectively. Written reviews are what separate them: 0% of 501 Chorus Echo's written reviews are positive against 67% of VAPolyMkII's.

501 Chorus Echo ships an update every 17 months, VAPolyMkII weekly. The most recent releases landed on October 18, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 501 Chorus Echo | VAPolyMkII |
| --- | --- | --- |
| Price | $14.99 | **$3.99** |
| Rating | [4.5 (8 ratings)](https://appshunter.io/ios/app/501-chorus-echo/id6473418769/reviews) | **[4.5 (11 ratings)](https://appshunter.io/ios/app/vapolymkii/id6476809566/reviews)** |
| Number of ratings | 8 | **11** |
| Positive reviews | 0.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 23 MB | 16 MB |
| Requires iOS | **15** | 16.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Nembrini Audio](https://appshunter.io/developer/1493296895) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### 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


### VAPolyMkII

[App page](https://appshunter.io/ios/app/vapolymkii/id6476809566)

This virtual analog synthesizer offers a 16-voice bitimbral polyphonic sound engine with two distinct filter models and extensive modulation options. It includes a built-in sequencer, various effects, and supports AudioUnit Extension for integration with DAWs. Projects can be synced across iPhone, iPad, and Mac via iCloud.

**Highlights:** 16-voice bitimbral polyphonic synthesizer, Two analog-modeled filter types, Extensive modulation capabilities, Built-in piano roll sequencer, Multiple audio effects, AudioUnit Extension (AUv3) support, iCloud Drive project syncing

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is 501 Chorus Echo free?

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

### Is VAPolyMkII free?

VAPolyMkII costs $3.99, with no in-app purchases.

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

VAPolyMkII is rated higher. 501 Chorus Echo averages 4.5 out of 5 from 8 ratings, while VAPolyMkII averages 4.5 from 11 ratings.

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

Neither 501 Chorus Echo nor VAPolyMkII shows ads.

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

501 Chorus Echo ships an update every 17 months, and VAPolyMkII weekly. Most recently, 501 Chorus Echo was updated on October 18, 2026 and VAPolyMkII on October 27, 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.*