Dogs and Cats whistle

This application uses ultrasound from 8 to 50 kHz, which is can stun and frighten the animals or drown and prank friends. Also conducted experiments on his friends and acquaintances, some of them did not hear ultrasound, which can only mean that it is time to go to the doctor: D Older people do not hear ultrasound, you can check it out.

App features:
- Pleasant, unobtrusive design in the style of Android Lollipop;
- Two tabs, each comprising five buttons with different frequencies;
- "Stop" button - if your pet or friend began to react strangely;
- Convenient navigationbar with useful information;

Users of the application will be pleasantly surprised by the simplicity and nice design. Your have to prank your friends or check this app on cats or dogs, maybe insects. Try this app and you know work or NO!