Ultrasound Barrier is a free mosquito generator application developed by USE Engineering Corporation. The app generates a sound of 15kHz ~ 20kHz, which can be adjusted to play different sounds such as fly, mosquito, dog, cat, rat, and youngster with just a tap on the icon. The app falls under the category of Lifestyle and subcategory Health & Fitness.

The app is simple and easy to use, and it provides an effective solution for people who want to get rid of mosquitoes. The app generates a high-frequency sound that is inaudible to humans but can repel mosquitoes. The app offers a range of sound frequencies that can be used to repel different types of insects. Overall, Ultrasound Barrier is a helpful app for anyone looking to keep mosquitoes and other insects at bay.