# Room Impulse Response vs APM Tool Lite

The clearest difference is review sentiment: APM Tool Lite at 50% against Room Impulse Response's 0%. APM Tool Lite also leads on price (Free vs $49.99) and in-app purchases (none vs 1). On update cadence, ads and device support there is nothing between them.

APM Tool Lite is free to download; Room Impulse Response costs $49.99 up front. Room Impulse Response sells 1 one-off in-app purchase. APM Tool Lite asks for nothing beyond the download.

Room Impulse Response ships an update every 5 months, APM Tool Lite every 6 months. The most recent releases landed on October 3, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Room Impulse Response | APM Tool Lite |
| --- | --- | --- |
| Price | $49.99 | **Free** |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Paid | **Free** |
| Size | 55 MB | 87 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Lorenzo Rizzi](https://appshunter.io/developer/856070642) |

## What reviewers say

### Room Impulse Response

[App page](https://appshunter.io/ios/app/room-impulse-response/id805907763)

Analyze the acoustic properties of rooms and loudspeakers. Record impulses or swept sines to generate Impulse Responses (IRs) and visualize various acoustic metrics like RT60, EDT, and clarity. Perform spectral analysis with FFT for detailed sound decay visualization.

**Highlights:** Record impulse or swept sine, Generate Impulse Response (IR), View ETC with RT60 cursors, Analyze Schroeder curve (EDT, T10, T20, T30), Spectral analysis with FFT, 3D waterfall plot for sound decay

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Reference Curves Option | $14.99 | one-time |


### APM Tool Lite

[App page](https://appshunter.io/ios/app/apm-tool-lite/id891304617)

This application allows users to measure the acoustic performance of a room by analyzing key parameters like reverberation time and clarity. It includes a tutorial to guide users through its features, offering a simplified acoustic design activity.

**Highlights:** Measure acoustical performance, Analyze reverberation time, Evaluate clarity, Acoustic design activity, Tutorial slideshow

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

**In-app purchases:** none


## Frequently asked questions

### Is Room Impulse Response free?

Room Impulse Response costs $49.99, and also offers in-app purchases.

### Is APM Tool Lite free?

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

### Do Room Impulse Response or APM Tool Lite have ads?

Neither Room Impulse Response nor APM Tool Lite shows ads.

### Which is updated more often, Room Impulse Response or APM Tool Lite?

Room Impulse Response ships an update every 5 months, and APM Tool Lite every 6 months. Most recently, Room Impulse Response was updated on October 3, 2026 and APM Tool Lite 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.*