High Frequency Tones is a free iPhone app developed by Kevin Vergho in the Utilities & Tools category. This app allows you to precisely generate sound waves and test the limits of your hearing. As we age, our ability to hear high-frequency sounds diminishes, and this app provides a simple and clean interface to explore that concept.

With High Frequency Tones, you can generate frequencies up to 20,000 Hz, which is widely considered the upper limit of human hearing. The app offers various potential uses, such as annoying your friends or classmates without the teacher or other adults noticing. It can also be used as a dog whistle or bug deterrent, as these animals have better hearing than humans. Additionally, you can use it to ward off teenagers from a specific area or compete with your friends to determine who has the best hearing.

For an ad-free experience and access to four different waveforms, you can purchase the Frequency Premium for just $0.99. Enjoy exploring the limits of your hearing with High Frequency Tones.