# High Frequency Tones — Generate any frequency

> Generate sound waves up to 20,000 Hz to test hearing and for various deterrent uses. (iPhone/iPad app by Kevin Vergho.)

- Source: https://appshunter.io/ios/app/high-frequency-tones/id1511601653 (this page in markdown: same URL + `.md`)
- Developer: [Kevin Vergho](https://appshunter.io/developer/414151786)
- Category: Utilities, Entertainment
- Price: Free with in-app purchases
- Rating: 4.65/5 from 595 App Store ratings · 11 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 25 MB
- Languages: English
- Released: 2020-05-06
- Data updated: 2026-08-25
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/high-frequency-tones/id1511601653/reviews.md

## What is High Frequency Tones?

Precisely generate sound waves with High Frequency Tones and test the limits of what you can hear. 

Did you know that our hearing decays as we grow older? Studies show that as we age, we lose our ability to hear up to half of the upper frequency spectrum. Now, you can test that concept within a clean and easy-to-use interface. High Frequency Tones will allow you to generate any frequency up to 20,000 Hz – widely considered the upper limit to human hearing. 

Potential uses include:
• Annoy your friends or classmates without tipping off the teacher or other adults.
• Use it as a dog whistle or bug deterrent (both of whom have better hearing than humans!). 
• Ward teenagers away from an area.
• Compete with your friends to determine who has the best hearing!

Purchase Frequency Premium for just $0.99 to permanently eliminate ads and choose from four different waveforms.

## Key features

- Generate sound waves up to 20,000 Hz
- Test human hearing limits
- Dog whistle functionality
- Bug deterrent
- Teenager deterrent
- Hearing competition tool

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Frequency Premium | $0.99 | one-time |


## Recent user reviews (10 of 11)

All indexed reviews: https://appshunter.io/ios/app/high-frequency-tones/id1511601653/reviews.md

### 5/5 — Office shenanigans

*2025-10-14, version 1.0.0*

I use this as a form of psychological warfare against a few coworkers. Just playing it at a high frequency and pretending I don’t hear anything.

### 1/5 — Does not work

*2025-10-01, version 1.0.0*

Mic is good, speaker also good. Other frequency apps and music/video apps work fine. This generates no noise at all for any hertz on the entire spectrum. Rip off.

### 1/5 — Не работёнку

*2025-01-17, version 1.0.0*

Не работает ни как

### 5/5 — Не работало

*2024-11-20, version 1.0.0*

Сначала не мог понять почему не работает, потом выключил бесшумный режим и все заработало (иногда еще до максимума нужно звук поднять, но у меня заработало после выключения бесшумного режима )

### 1/5 — Шляпа

*2024-11-13, version 1.0.0*

Шляпа

### 5/5 — Ig Ak.Darnaa 💋

*2024-09-28, version 1.0.0*

There are many frequency apps. I tried 4 different apps before I found this one. They're all so expensive and don’t even compare to the high-frequency Hz this app provides, for the cost of $1 indefinitely shows me they care about providing what you need. The first night I used it. I astral projected & went through two portals. Very unexpected without even trying. I immediately deleted all the other apps. Was pretty tired the next day. I must say Nothing else compares Hz-wise. Trust me, I did my research extensively. I love this app. All other apps are overrated 
Thank you 🙏🏽

### 5/5 — 조하여

*2024-09-12, version 1.0.0*

완전조움

### 5/5 — Absolutely amazing

*2024-08-19, version 1.0.0*

I used it in school and so kids got there eardrum hurt and the adults couldn’t hear it XDD amazingly used app

### 5/5 — 소리

*2023-08-30, version 1.0.0*

소리가 안들려용

### 1/5 — Trash

*2021-01-02, version 1.0.0*

Doesn’t work at all, reinstalled it a few times and still doesn’t work

## Frequently asked questions about High Frequency Tones

### What does High Frequency Tones do?

High Frequency Tones allows you to generate sound waves at precise frequencies, up to 20,000 Hz, which is considered the upper limit of human hearing. It can be used to test your hearing, compare it with others, or for various deterrent purposes.

### What are the potential uses for this app?

The app has several potential uses, including testing your hearing to see how it compares to younger individuals or animals, using it as a dog whistle, deterring bugs, or warding teenagers away from a specific area. It's also useful for friendly competitions to determine who can hear the highest frequencies.

### Is High Frequency Tones free to use?

The app is free to download and use with its core functionality. However, there is an optional in-app purchase called 'Frequency Premium' which costs $0.99. This premium upgrade permanently removes ads and unlocks four different waveform options.

### What is the maximum frequency this app can generate?

This application can generate sound waves up to 20,000 Hz. This frequency is widely considered to be the upper limit of human hearing, allowing users to test the extent of their auditory range.

### Can this app be used to annoy people?

The app can generate high-frequency sounds that may be inaudible to most adults but audible to younger individuals or animals. This characteristic could potentially be used to annoy friends or classmates without being detected by adults.

## Version history (last 1 release)

### 1.0.0 — 2020-05-06

No release notes.

## Apps similar to High Frequency Tones

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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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 2026-08-25.*