# APM Sweep vs J

The clearest difference is in-app purchases: APM Sweep at none against J's 1. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. J sells 1 one-off in-app purchase. APM Sweep asks for nothing beyond the download.

## The numbers

| Metric | APM Sweep | J |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/apm-sweep/id1492480271/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 10 months | — |
| Monetization | Free | — |
| Size | 35 MB | 28 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Lorenzo Rizzi](https://appshunter.io/developer/856070642) | [Shoma Kondo](https://appshunter.io/developer/1884832972) |

## What reviewers say

### 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


### J

[App page](https://appshunter.io/ios/app/j-chorus/id6761194227)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| J-Chorus Full Version | $4.99 | one-time |


## Frequently asked questions

### Is APM Sweep free?

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

### Is J free?

J is free to download, with in-app purchases available.

### Do APM Sweep or J have ads?

Neither APM Sweep nor J shows ads.

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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.*