Mosquito Sound is a free Android application developed by Hemiltech under the Utilities & Tools category. The program is a simulator that produces sounds in the range of 9kHz to 22kHz, which are known to repel mosquitoes. It is essential to note that this is not a bug zapper or mosquito trap, but a simulator that can be used as a home defense bug spray.

The application is straightforward to use. By tapping on the power button, the simulator starts, and the sound begins to play. However, it is recommended to turn the volume to the maximum while playing the sound. It is also essential to keep in mind that some built-in phone speakers may not produce all mosquito sound frequencies.