# APM Sweep

> Measure and improve room acoustics with precise sound analysis. (iPhone/iPad app by Lorenzo Rizzi.)

- Source: https://appshunter.io/ios/app/apm-sweep/id1492480271 (this page in markdown: same URL + `.md`)
- Developer: [Lorenzo Rizzi](https://appshunter.io/developer/856070642)
- Category: Music, Utilities
- Price: Free (on sale, was $2.99)
- Rating: 1.00/5 from 1 App Store ratings · 2 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 35 MB
- Languages: English, Italian
- Released: 2020-07-30
- Data updated: 2026-06-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/apm-sweep/id1492480271/reviews.md

## What is APM Sweep?

APM Sweep is the successor of the well known APM Tool: it let you quickly measure the acoustical performance of a room (reverberation time, clarity, etc. in octave and third octave bands), check if that room is well suited for its purpose and, if not, choose which materials can improve the acoustical quality. Everything still there but with an exciting improvement: now you can use all the power of the Exponential Sine Sweep technique for the measurement process, so your results can be extremely precise and accurate.
You can also, save, load and export results in common spreadsheet format.
The app can also generate pdf reports with photos.
A tutorial slideshow explains the app use.
Required at least iOS 11.0

## Key features

- 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

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/apm-sweep/id1492480271/reviews.md

### 1/5 — Doesn’t work

*2023-01-14*

It’s frustrating that after all these years, there isn’t a way to test apps out for their functionality prior to purchasing them at full price. While this app is only $2.99, it was a complete waste of money. 
Reading the description led me to believe it would do what i wanted…the fact there were no reviews should have been an indication…
I purchased and downloaded the app onto a new 11” iPad Pro (3rd generation) running the most recent iOS 15.6.1. I went to the tutorial section and tapped “open tutorial” and nothing happened…i tried again and again and nothing happened and unless you quit the app, you cannot get back to the Home Screen.
I quit and restarted the app and went into settings. Here i could change a number of parameters and then attempted to capture my first room’s data…i clapped, then clapped again and again and again and still nothing.
From here, i went to the developer’s website, which is in Italian, but has a tab for English at the top, which i selected…and the language never changed. There do not seem to be any links for tutorials on their site and the tab to contact them via email is grayed out. Some of the sections on the website are still in progress and have the stock “lorem ipsum” under a few categories. 
I realize there are tons of apps out here, but it would be great if Apple took the time to review what apps are being kept up to date and pull those that are not working properly or at all and no longer work with recent iOS’. Sadly, that probably won’t happen as long as they continue to receive revenue from faulty apps such as this.

**Developer response:** there was a free version of the application thet you could have tried.

### 5/5 — Best RT60 app available with useful metrics (C50)

*2021-06-15*

I have used APM extensively when assessing meeting rooms acoustics on the fly, the results are relatively accurate and reliable on identifying issues with speech clarity.

Highly recommend

## Frequently asked questions about APM Sweep

### What is APM Sweep used for?

APM Sweep is used to measure and analyze the acoustical performance of a room, such as reverberation time and clarity. It also helps identify materials to improve the room's sound quality.

### Does APM Sweep offer a free trial?

APM Sweep is completely free to download and use, with no trial period required. This allows users to access all its features without any cost.

### What devices is APM Sweep compatible with?

APM Sweep is compatible with iPhone, iPad, and iPod devices. It requires at least iOS 11.0 to function correctly.

### How often is APM Sweep updated?

The latest version of APM Sweep is 1.0.11, last updated on April 22, 2026. This indicates a recent update, suggesting ongoing development and support.

### Can I export my APM Sweep results?

Yes, APM Sweep allows you to save, load, and export your results in common spreadsheet formats. This makes it easy to analyze and share your acoustic data.

### Does APM Sweep have ads?

No, APM Sweep does not contain advertisements. It is a free application that provides an ad-free experience for its users.

### What is the age rating for APM Sweep?

APM Sweep has an age rating of 4+. This means it is suitable for users of all ages, with no content restrictions.

### How precise are the measurements in APM Sweep?

APM Sweep utilizes the Exponential Sine Sweep technique for measurements, which ensures extremely precise and accurate results. This advanced method provides reliable acoustic data.

## Version history (last 5 releases)

### 1.0.11 — 2026-04-22

It support iOS version 15 to 26.

### 1.0.9 — 2022-05-03

New materials, various bugfixes. Reviewed the code that computes acoustic treatments. User annotations in the generated report are now possible.

### 1.0.8 — 2020-11-21

Tested compatibility with iOS 14. Added new materials. Various bugfixes. Corrected some crashes occurred on iPad devices.

### 1.0.6 — 2020-09-24

Fixed compatibility bug with iOS 12

### 1.0.5 — 2020-07-30

No release notes.

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## More apps by Lorenzo Rizzi

- [APM Tool Lite](https://appshunter.io/ios/app/apm-tool-lite/id891304617)
- [Noise Calc](https://appshunter.io/ios/app/noise-calc/id1556882174)

All apps by Lorenzo Rizzi: https://appshunter.io/developer/856070642

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-04.*