---
title: "High-Frequency Noise Monitor — App Overview"
url: https://marlvel.ai/intel-report/utilities/com-toon-llc-hfnmonitor
category: Utilities
developer: TOON,LLC
platforms: ios
rating: 3.3 (4 ratings)
pricing: paid
report_level: overview
generated: 2026-04-29
last_verified: "2026-04-29T10:05:13.090Z"
---

<!-- SECTION: Key Insight -->
> **Key Insight:** This app serves as a specialized diagnostic tool for visualizing and tracking high-frequency sound waves that are typically imperceptible to human hearing.

<!-- SECTION: Quick Facts -->
| Metric | Value |
|--------|-------|
| Category | Utilities |
| Rating | 3.3 ★ (4) |
| Pricing | paid |
| Platforms | iOS |
| Latest Version (iOS) | 6.0 |
| Developer | TOON,LLC |

<!-- SECTION: Summary -->
## What is High-Frequency Noise Monitor?

High-Frequency Noise Monitor is a utility tool designed to detect and analyze inaudible sound frequencies above 8 kHz. It enables users to identify high-frequency noise sources, such as electronic power conversion devices or pest deterrent systems, to assess potential environmental interference.

<!-- SECTION: Key Features -->
## Key Features

- **High-Frequency Analysis**: Specializes in monitoring and examining noise components specifically within the 8 kHz and above frequency range.
- **Noise Source Identification**: Assists in detecting harmonic noise emitted by electronic devices, power lines, and AC-DC power adapters.
- **Pest Deterrent Detection**: Allows users to monitor the frequency and volume output of devices marketed to drive away vermin.

<!-- SECTION: Target Audience -->
## Who is it for?

Individuals seeking to identify and monitor inaudible high-frequency noise sources in their immediate environment.

<!-- SECTION: Links -->
## Links

- [App Store](https://apps.apple.com/us/app/high-frequency-noise-monitor/id1588823574?uo=2)
- [Full Intelligence Report](https://marlvel.ai/intel-report/utilities/com-toon-llc-hfnmonitor)

---
*This is an overview report. Sentiment analysis, competitive landscape, and SWOT analysis are available in the [full intelligence report](https://marlvel.ai/intel-report/utilities/com-toon-llc-hfnmonitor).*
*Generated by [Marlvel.ai](https://marlvel.ai) — Independent app intelligence.*