Ultrasonic Emitter

Contains adsIn-app purchases
3.3
558 reviews
100K+
Downloads
Content rating
Everyone
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About this app

The highest frequency that the human ear is capable of perceiving is 20 KHz, although this frequency decreases with age.

The speakers of mobile devices do not usually emit sound above 20 KHz, so this app is limited to 20 KHz.

Most adults cannot hear above 15 KHz.

Do not use with headphones. In case of discomfort, dizziness and other symptoms stop use immediately!

Do not use this application as a weapon against dangerous animals.

The application is used at your own risk. The developer bears no responsibility for the use of this application.

Some uses of high frequency sounds:

- Hearing tests. This tool can be used to perform hearing tests, although accuracy may vary depending on the device used.

The app can generate high-frequency tones in a specific range, usually above a person's normal hearing range. These tones are of different frequencies to evaluate different parts of the hearing spectrum.

To assess hearing threshold, users can adjust the intensity of the sound emitted by the app until they no longer hear the tone. This point, known as the hearing threshold, can indicate the minimum detectable frequency for the individual.

It is important to note that a hearing test app based on high-frequency sounds cannot completely replace a professional hearing evaluation by a hearing health specialist. However, it can serve as an initial tool for self-assessment and hearing monitoring, providing preliminary information about hearing health.

- Pet training. Applications designed for training dogs and cats can emit high-frequency sounds that are striking or uncomfortable for animals, which can be used to teach them certain behaviors or to correct unwanted habits.

High frequency sounds can be used as positive or negative reinforcement during the training process. For example, a pleasant sound could be associated with a desired action to positively reinforce the behavior, while an unpleasant sound could be used as negative reinforcement to deter unwanted behaviors.

High-frequency sounds can be used to teach basic obedience commands, such as sit, stay, or respond to the owner's call. The association between the sound and the desired action can speed up the learning process.

This application can be used similar to a high frequency whistle. If you notice a sign that the dog or cat being trained feels a strong repulsion towards the high-frequency sound, you should stop using it immediately.

The concept of using animal nuisance frequencies as a repellent method has been the subject of research and debate.

It has been suggested that some animals, such as rats, mice and other rodents, as well as mosquitoes and other insects, may be sensitive to certain sound frequencies that are outside the human auditory range, and that these sounds may serve as a repellent to such animals.

Despite the popularity of the idea, it is unproven. The effectiveness of high frequency sounds as repellents is not supported by scientific research. This app is not an effective solution as an anti-rat or anti-mouse tool and is not effective as an ultrasonic barrier for these purposes. The purpose of this app is not to scare away animal pests.
Updated on
Aug 30, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
This app may share these data types with third parties
Device or other IDs
No data collected
Learn more about how developers declare collection
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

3.4
546 reviews
Author Joyce Fisher
November 11, 2023
The Best! I had an annoying mouse in my house that drove me crazy. I put out traps; which were avoided, I made noises and threw things in the direction of where I heard the rustling of the mouse... nothing worked. I searched for apps that would drive away mice, and I ran across this one. I installed it and set it to the highest frequency. Within minutes, the rustling stopped, and the mouse was gone! I don't know if it left my house entirely, but it did leave the room that I was in!
27 people found this review helpful
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Ian W
December 12, 2023
After installing and opening for the first time, a notice pops up asking for a small contribution (£2.09) to use without advertising. The amount is fine, until you discover it's not for using all the features in the app. £2.09 allows you only one frequency! The app has very limited use with only one frequency. No mention of this was made prior to payment and one would naturally assume payment would cover all the app's features. This is not at all fair play! Uninstalled. £2.09 lost.
17 people found this review helpful
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MemiSoft App Studio
December 12, 2023
Thank you for using our app. The only difference if you make the payment is that the app does not show ads. Everything else works the same. You may only be able to hear the TEST button as the rest of the buttons broadcast on high frequency and many people cannot hear those frequencies. If you need more information you can contact us by email.
Aedin Bradshaw
October 2, 2023
So far I believe it works. A mouse had gotten into my bedroom and I couldn't sleep for the noise of it on the wooden floor and couldn't get it out of the room. Eventually I found this app to download, I ran it on the Auto option and it either shut the pest up or it left the room. Either way I got back to sleep.
20 people found this review helpful
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