# Devil Spring Reverb vs VAPolyMkII

The clearest difference is price: Devil Spring Reverb at $3.99 against VAPolyMkII's $14.99. Devil Spring Reverb also leads on iOS requirement (11.0 vs 16.6). VAPolyMkII's advantage is update cadence (weekly vs every 5 months) and review sentiment (67% vs 50%). On rating, ratings volume, ads and in-app purchases there is nothing between them.

Devil Spring Reverb costs $3.99 and VAPolyMkII $14.99 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 — 4.4 for Devil Spring Reverb against 4.5 for VAPolyMkII. Both are backed by a comparable volume of ratings — 7 and 11 respectively. Written reviews are what separate them: 50% of Devil Spring Reverb's written reviews are positive against 67% of VAPolyMkII's.

Devil Spring Reverb ships an update every 5 months, VAPolyMkII weekly. The most recent releases landed on July 16, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Devil Spring Reverb | VAPolyMkII |
| --- | --- | --- |
| Price | **$3.99** | $14.99 |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/devil-spring-reverb/id1550838067/reviews) | **[4.5 (11 ratings)](https://appshunter.io/ios/app/vapolymkii/id6476809566/reviews)** |
| Number of ratings | 7 | **11** |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Paid | Paid |
| Size | 87 MB | 16 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, Mac |
| Age rating | 4+ | 4+ |
| Developer | [Julien Faure](https://appshunter.io/developer/1544656752) | [Ryo Togawa](https://appshunter.io/developer/1474193056) |

## What reviewers say

### Devil Spring Reverb

[App page](https://appshunter.io/ios/app/devil-spring-reverb/id1550838067)

This app emulates the sound of a vintage tube amp's spring reverb, offering a warm, analog feel. It utilizes impulse responses and a custom convolution engine for realistic soundscapes, usable as a standalone application or within a DAW.

**Highlights:** AUv3 support, 38 spring reverb impulse responses, Optimized convolution engine, Adjustable tone and reverb length, Standalone app functionality

**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 Devil Spring Reverb free?

Devil Spring Reverb costs $3.99, with no in-app purchases.

### Is VAPolyMkII free?

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

### Which has better reviews, Devil Spring Reverb or VAPolyMkII?

VAPolyMkII is rated higher. Devil Spring Reverb averages 4.4 out of 5 from 7 ratings, while VAPolyMkII averages 4.5 from 11 ratings.

### Do Devil Spring Reverb or VAPolyMkII have ads?

Neither Devil Spring Reverb nor VAPolyMkII shows ads.

### Which is updated more often, Devil Spring Reverb or VAPolyMkII?

Devil Spring Reverb ships an update every 5 months, and VAPolyMkII weekly. Most recently, Devil Spring Reverb was updated on July 16, 2026 and VAPolyMkII on September 20, 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.*