# Mosquitone Detector — Find the mosquito noise!

> Detects and visualizes high-frequency and ultrasonic sounds inaudible to humans. (iPhone/iPad app by TOON,LLC.)

- Source: https://appshunter.io/ios/app/mosquitone-detector/id1289567807 (this page in markdown: same URL + `.md`)
- Developer: [TOON,LLC](https://appshunter.io/developer/633948723)
- Category: Utilities
- Price: $7.99
- Rating: 2.10/5 from 13 App Store ratings · 18 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.2 · 2 MB
- Languages: American English
- Released: 2017-10-05
- Data updated: 2026-09-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/mosquitone-detector/id1289567807/reviews.md

## What is Mosquitone Detector?

"Mosquitone Detector" is a sound measurement app that detects high frequency noises and ultrasonic sounds hard to hear for human ears.

The human audible range is generally said to be 20 Hz to 20 kHz, but sounds above 10kHz gradually become harder to hear with age. On the other hand, prolonged exposure to noise at excessively high sound pressure levels has been pointed out as potentially harmful to health, including hearing. You may be unknowingly exposed to artificially generated dangerous high-frequency noise. This app can detect and visualize such noises.

For example, there are increasing cases where high frequency noise generators are installed in various places as a purpose of repelling young people and beast pests using very high frequency mosquito noises, which are inaudible to general adults. 
Young children, in particular, may be exposed to very loud noise in an uncomfortable environment because adults cannot recognize it. Use this app to find high frequency noise and quickly get away from the bad spot or remove the noise source.

Two operating modes are available in this app, Detection Mode and Search Mode. Detection Mode can detect if there are high frequency noises and ultrasonic sounds. Search Mode can pinpoint the direction of high frequency sound sources.

Features:
- Detection of high frequency sound and ultrasonic wave, display of the peak frequency of the highest level.
- Search for sound source direction: 360 degrees horizontally
- Detectable frequency range: 8 kHz - 16 kHz / 16 kHz - 23 kHz (2 band division)
- Function to switch the gain range: 0dB - 100dB / -10dB - 90dB / -20dB - 80dB (in Detection Mode)
- Measurement screen rotation function (Rotate)

Operating procedure:
1) Selection of detectable frequency band
Select the frequency band as more than 16kHz or less than 16kHz.

2) Selection of Operational mode
- Detection Mode (Detect)
It finds an inaudible high frequency and ultrasonic sound in the frequency band more than 16 kHz (or less than 16 kHz).
Tap START button and it starts the detection function. If high frequency or ultrasonic sound exist, it will be displayed on the graph as the peak frequency. You can make the graph display easier to see by switching the gain range.

- Search Mode (Search)
It finds the direction of occurrence of the high-frequency sound source that detected the peak frequency. Search mode can be used only when high frequency or ultrasonic sound is founded in Detect mode. 
Please make sure to hold the bottom built-in microphone of iPhone so that it faces outward. If you measure with the microphone facing inward, microphone sensitivity will deteriorate, and accurate measurement will not be possible.
Tap Start button, and firmly hold the iPhone terminal, please turn slowly clockwise. Recommended that the time required for a rotation is about 15 seconds and the rotation speed in the graph is approximately 4 rpm.
The measurement is completed by one revolution, and the signal strength of the peak frequency is displayed on the pie chart. You can find approximate direction of the high-frequency sound source relative to your standing position.

3) Snapshot
Measurement results can be saved as image files in “Photos,” and a timestamp is embedded in the image.

Note:
If the frequency changes periodically or randomly, it is not possible to determine the direction of occurrence in "Search".
Ultrasonic measurement depends on the sensitivity characteristics of the built-in microphone, so the measurement result may vary.
Peak frequency measurements (dB) conform to general noise levels.

Remarks:
It is still under study about health effects on human body by listening to high frequencies including ultrasonic sound. If the high frequency noise of high level is detected daily, we recommend that you consult an expert.

Please visit our iOS App Support page for more information on this app.

## Key features

- High frequency and ultrasonic sound detection
- Peak frequency display
- Sound source direction search (360 degrees)
- Selectable frequency bands (8-16 kHz, 16-23 kHz)
- Adjustable gain ranges
- Measurement screen rotation

## Recent user reviews (10 of 18)

All indexed reviews: https://appshunter.io/ios/app/mosquitone-detector/id1289567807/reviews.md

### 5/5 — 素晴らしい。可視化の重要性

*2026-08-05*

長年モス音に悩まされていました。発生源の方向と周波数、デシベルが明確に可視化され、問題解決に一役買ってくれました。アプリで課金したのは初めてでしたが、大満足です。

### 5/5 — Works well

*2026-08-04*

It stopped working, I reported it, response was "allow access to microphone". That fixed it. I am used to apps that need access to the microphone asking for it at launch.  Lesson learned.

**Developer response:** Please check if the app has permission to access the iPhone's built-in microphone for iOS privacy settings. If it is enabled, but it is not working properly, the built-in microphone may be damaged in some way.

### 1/5 — 役に立たない

*2026-03-29*

まったく役に立たない。お金を払わないと試せない。試したが使えない

### 1/5 — Trash

*2024-01-29*

This app doesn’t give you anything but headaches. I thought it might help me locate a high pitched sound. Not a chance! Totally confusing and a waste of money!

**Developer response:** The app can detect high-frequency sounds (from 8 kHz to 23 kHz) using the iPhone's built-in microphone.
In order for this app to work properly, it is necessary to make the microphone access permission settings related to the iOS system. If it is enabled, but it is not working properly, the built-in microphone may be damaged in some way.

### 5/5 — Great little app

*2023-12-26*

Dog seemed upset. wondered if hf sound.  App worked well though dog issue not resolved by this! Easy to use and effective.

### 1/5 — Terrible app

*2023-10-04*

I tried using it to identify a high pitch noice coming from a directional speaker but the readings were nonexistent.

**Developer response:** In order for this app to work properly, it is necessary to make the microphone access permission settings related to the iOS system. If it is enabled, but it is not working properly, the built-in microphone may be damaged in some way.

### 1/5 — Funktioniert nicht!

*2023-03-31*

Da eine App Oszilloskop in meinem Haus Frequenzen erkennt bzw gefunden hat, die zwischen 50 Hertz und 100.000 Hertz hin und herspringen und gleichzeitig nebeneinander anwesend sind, war diese App meine Hoffnung, die Ursache dafür zu finden. Ich benutze das neueste iPad. Ich habe BEIDE Apps gekauft "Mosquitone" und HNMF - bei beiden Apps sehe ich keine Bewegung. Meine anderen Messungen belegen das Gegenteil. NUTZT bitte keine solchen Frequenzen, um Katzen, Maulwürfe, Hunde, Mücken etc zu vertreiben! Diese extremen Frequenzen machen euch psychische Probleme, ohne dass ihr darauf kommt, dass sie die Ursache dafür sind. Warum ist das so? Jede Frequenz ist ein Schall / ein Ton und würde zum Beispiel unter einem Mikroskop ganz feine "Bewegungsrillen" in einer Schale mit Wackelpudding zeigen. Unsere Zellen, das Körperwasser kann damit verglichen werden - gerade deshalb sind solche Frequenzen, die wir glauben, nicht zu hören, für unser Wohlbefinden gefährlich. Warum? Weil wir mit dem Gehirn nur etwas ignorieren oder uns daran gewöhnen können (oder übertönen), was wir bewusst wahrnehmen. Warum? Einen Gestank wie von zb Jauche riechst du nach einer gewissen "Konfrontation " nicht mehr so stark (Geruchsadaption). Einen Gestank, den du nicht riechst, wird aber trotzdem von feinen Zellen registriert. Bloß, dass Gerüche keine Schwingung erzeugen.

### 1/5 — No instructions or way to test.

*2023-01-05*

The app does not have clear instructions to interpret any of the numbers. And it isn’t possible to know if it works before you use it. I believe I should have a refund and plan to request one

**Developer response:** Please refer to our support page for this app. You will find reference information on environmental standards for high-frequency noise.

### 4/5 — シンプルで使いやすい

*2021-11-03*

高周波音の探査・測定が目的でしたが、まさに必要な機能でした。測定中のグラフ（？）もとてもわかりやすくてグッドです。
コスパも適当と判断します。

残念な点は、測定できる上限が22kHz程度までで目的としていた測定が半分ほどしかできなかったことです。ハード的な限界だったのかもしれませんが、星一つ減らして星四つとさせていただきました。

### 5/5 — Works very well.

*2021-07-15*

Had an issue, fast response from dev, it was my phone settings blocking mic access. Helps me track down hf noise from computer and electronic kit.

**Developer response:** Please check if the app has permission to access the iPhone's built-in microphone for iOS privacy settings. If it is enabled, but it is not working properly, the built-in microphone may be damaged in some way.

## Frequently asked questions about Mosquitone Detector

### What is the price of Mosquitone Detector?

Mosquitone Detector is a paid application, priced at $6.99. This one-time purchase grants you access to all its features for detecting and analyzing high-frequency sounds.

### Does Mosquitone Detector have ads?

No, Mosquitone Detector does not contain advertisements. As a paid application, it offers an uninterrupted user experience focused on its sound detection capabilities.

### What devices does Mosquitone Detector support?

Mosquitone Detector is currently available for iPhone. It is designed to utilize the iPhone's built-in microphone for accurate sound measurements.

### How often is Mosquitone Detector updated?

The latest version of Mosquitone Detector is 7.0, last updated on February 20, 2026. While specific update frequency isn't detailed, this indicates ongoing development and support for the application.

### What is the age rating for Mosquitone Detector?

Mosquitone Detector has an age rating of 4+. This suggests that the content and functionality of the app are considered appropriate for children aged four and older.

### What is the user sentiment for Mosquitone Detector?

User sentiment for Mosquitone Detector appears to be mixed, with an average rating of 1.8 stars from 12 ratings. This suggests that while some users find value in its features, there may be areas for improvement based on user feedback.

### How does Mosquitone Detector's Search Mode work?

Search Mode in Mosquitone Detector helps pinpoint the direction of high-frequency sound sources. After detecting a sound in Detection Mode, you hold the iPhone's microphone outward and slowly turn clockwise for about 15 seconds to map the signal strength.

## Version history (last 5 releases)

### 7.1 — 2026-07-31

- Improved internal processing and performance.

### 7.0 — 2026-02-20

- Improved internal processing and performance.
- Requires iOS 26.2 or later.

### 6.0.1 — 2025-12-19

- Improved internal processing and performance.
- Requires iOS 18.7 or later.

### 6.0 — 2024-12-23

- Renewed UI design.
- Requires iOS 18.2 or later.

### 5.0 — 2023-09-28

- Improved internal processing and performance.
- Requires iOS16.6 or later.

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## More apps by TOON,LLC

- [Audio Tone Generator Lite](https://appshunter.io/ios/app/audio-tone-generator-lite/id633948720)
- [Audio Frequency Analyzer](https://appshunter.io/ios/app/audio-frequency-analyzer/id684641742)
- [Sound Level Analyzer Lite](https://appshunter.io/ios/app/sound-level-analyzer-lite/id886090835)
- [Sound Level Analyzer](https://appshunter.io/ios/app/sound-level-analyzer/id886109671)
- [Hearing Analyzer Portrait](https://appshunter.io/ios/app/hearing-analyzer-portrait/id922806926)
- [Hearing Analyzer Lite](https://appshunter.io/ios/app/hearing-analyzer-lite/id922827806)

All apps by TOON,LLC: https://appshunter.io/developer/633948723

## Related topics

[mosquitone detector](https://appshunter.io/ios/topics/mosquitone-detector)

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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 2026-09-04.*