Show your friends that your phone is innovative! Now you can just whistle to turn on the camera's flashlight! This app detects sound of whistling and turns on the flashlight. It's great way to impress to friends! You can choose sensitivity of detecting whistle and reactions on the sound of whistling(turn on ringtone or vibrate).
9Apps 4.9
![How to turn on the sustained sound on Yamaha PSR [E-383] #howto #yamahapiano #sustainable screenshot 4](https://i.ytimg.com/vi/1YYXPDwXFzE/mqdefault.jpg)
