# ShimmerVerb vs APM Sweep

The clearest difference is price: APM Sweep at Free against ShimmerVerb's $14.99. ShimmerVerb's advantage is rating (4.6 vs 1.0) and update cadence (every 6 weeks vs every 10 months). On ads, in-app purchases and device support there is nothing between them.

APM Sweep is free to download; ShimmerVerb costs $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ShimmerVerb holds the better App Store score, 4.6 against 1.0. That said, the two scores are not equally well evidenced: ShimmerVerb has 12 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 78% of ShimmerVerb's written reviews are positive against 50% of APM Sweep's.

ShimmerVerb ships an update every 6 weeks, APM Sweep every 10 months. The most recent releases landed on September 21, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ShimmerVerb | APM Sweep |
| --- | --- | --- |
| Price | $14.99 | **Free** |
| Rating | **[4.6 (12 ratings)](https://appshunter.io/ios/app/shimmerverb/id1463786346/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/apm-sweep/id1492480271/reviews) |
| Number of ratings | **12** | 1 |
| Positive reviews | **77.8% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 10 months |
| Monetization | Paid | **Free** |
| Size | 14 MB | 35 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Eventide](https://appshunter.io/developer/546518026) | [Lorenzo Rizzi](https://appshunter.io/developer/856070642) |

## What reviewers say

### ShimmerVerb

[App page](https://appshunter.io/ios/app/shimmerverb/id1463786346)

This app creates massive, lustrous reverbs with parallel pitch shifters for ethereal, shimmering soundscapes. It offers advanced feedback control and performance-oriented features like a "Ribbon" macro and "HotSwitch" for dynamic sound shaping.

**Highlights:** Massive lustrous reverb with parallel pitch shifters, Infinitely feedbackable signal for cascading reverbs, Adjustable feedback frequencies via cross-over network, Playable "Ribbon" performance macro, Instant parameter switching with "HotSwitch", "Freeze" button for smeared textures, AUv3 plugin and standalone app

**In-app purchases:** none


### APM Sweep

[App page](https://appshunter.io/ios/app/apm-sweep/id1492480271)

This application helps measure and analyze a room's acoustical performance, including reverberation time and clarity. It suggests materials to improve sound quality and allows for saving, loading, and exporting results in common spreadsheet formats. PDF reports with photos can also be generated.

**Highlights:** Acoustical performance measurement, Reverberation time and clarity analysis, Material recommendation for improvement, Save, load, and export results, Generate PDF reports with photos, Tutorial slideshow for guidance

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is ShimmerVerb free?

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

### Is APM Sweep free?

APM Sweep is free to download, with no in-app purchases.

### Which has better reviews, ShimmerVerb or APM Sweep?

ShimmerVerb is rated higher. ShimmerVerb averages 4.6 out of 5 from 12 ratings, while APM Sweep averages 1.0 from 1 ratings.

### Do ShimmerVerb or APM Sweep have ads?

Neither ShimmerVerb nor APM Sweep shows ads.

### Which is updated more often, ShimmerVerb or APM Sweep?

ShimmerVerb ships an update every 6 weeks, and APM Sweep every 10 months. Most recently, ShimmerVerb was updated on September 21, 2026 and APM Sweep on September 24, 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.*