The App name itself describes the application, But still i will give you a brief idea about it.
There are about 3500 known mosquito species in the world and they all react slightly different to the repeller. Use the pitch selector to find optimal repelling frequency for the mosquitos in your region.
As the Animals and Insects can hear the high frequency noise,
we have use 3 different high frequency to keep away insects, mainly mosquitoes and other insects