# Devil Spring Reverb vs Shimmer Delay Ambient Machine

The clearest difference is rating: Shimmer Delay Ambient Machine at 5.0 against Devil Spring Reverb's 4.4. Shimmer Delay Ambient Machine also leads on review sentiment (67% vs 50%). Devil Spring Reverb's advantage is price ($3.99 vs $6.99). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

Devil Spring Reverb costs $3.99 and Shimmer Delay Ambient Machine $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Shimmer Delay Ambient Machine holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 7 and 4 respectively. Written reviews point the same way: 50% of Devil Spring Reverb's written reviews are positive against 67% of Shimmer Delay Ambient Machine's.

Both ship on a similar rhythm, roughly every 5 months. The most recent releases landed on July 16, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Devil Spring Reverb | Shimmer Delay Ambient Machine |
| --- | --- | --- |
| Price | **$3.99** | $6.99 |
| Rating | [4.4 (7 ratings)](https://appshunter.io/ios/app/devil-spring-reverb/id1550838067/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/shimmer-delay-ambient-machine/id1559249944/reviews)** |
| Number of ratings | **7** | 4 |
| Positive reviews | 50.0% of reviews | **66.7% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | Every 5 months |
| Monetization | Paid | Paid |
| Size | 87 MB | 34 MB |
| Requires iOS | **11.0** | 12.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Julien Faure](https://appshunter.io/developer/1544656752) | [Nembrini Audio](https://appshunter.io/developer/1493296895) |

## 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


### Shimmer Delay Ambient Machine

[App page](https://appshunter.io/ios/app/shimmer-delay-ambient-machine/id1559249944)

Create expansive soundscapes with this app that blends reverb, pitch shifting, and feedback. It's ideal for guitars, keys, synths, and vocals, offering real-time control and optimized performance for ambient electronic music production.

**Highlights:** Reverb, pitch shifting, and feedback effects, Auto-swell for dynamic volume changes, Real-time parameter control, Optimized CPU usage, Standalone, AUv3, and IAA support

**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 Shimmer Delay Ambient Machine free?

Shimmer Delay Ambient Machine costs $6.99, with no in-app purchases.

### Which has better reviews, Devil Spring Reverb or Shimmer Delay Ambient Machine?

Shimmer Delay Ambient Machine is rated higher. Devil Spring Reverb averages 4.4 out of 5 from 7 ratings, while Shimmer Delay Ambient Machine averages 5.0 from 4 ratings.

### Do Devil Spring Reverb or Shimmer Delay Ambient Machine have ads?

Neither Devil Spring Reverb nor Shimmer Delay Ambient Machine shows ads.

### Which is updated more often, Devil Spring Reverb or Shimmer Delay Ambient Machine?

Devil Spring Reverb ships an update every 5 months, and Shimmer Delay Ambient Machine every 5 months. Most recently, Devil Spring Reverb was updated on July 16, 2026 and Shimmer Delay Ambient Machine on September 21, 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.*